With many genetic traits discovered and many more in progress, it is imperative to the industry that firms (biotechnology companies) decide on the trait valuation and pricing. This includes more than one trait (also referred to as stacked traits) in a single variety of crop; the risk and uncertainty of expected returns associated with the development and release of a variety increases even more in case of stacked traits. The purpose of this thesis is to develop a model that can be used for the valuing and pricing of genetically modified (GM) traits that are random, sporadic, and non-persistent (e.g. drought tolerance, heat/cold stress) using the real option approach. The efficiency gain in case of occurrence of random event and expression of GM traits will be measured and used as a decision factor in determining the value of GM trait(s) at different phases of development. Risk premiums representing the value of GM trait to growers is calculated across risk averse attitudes. The return to labor and management (RTLM) provided by a GM trait is used to calculate the risk premiums when variation in parameters is allowed to be same as that reflected in historical data and gains from GM traits are realized. Monte Carlo simulation and stochastic efficiency with respect to a function (SERF) are used to estimate the certainty equivalents that decision makers would place on a risky alternative relative to a no risk investment. Certainty equivalents are estimated across a range of risk aversion coefficients and used to rank alternatives and determine where preferences among alternatives change while estimating risk premiums for the base case (no trait), drought tolerance, cold tolerance, NUB, and All traits (all traits combined into one as a stacked trait). Premiums provide perspective on the magnitude of differences in relative preferences among choices. The range of ARAC utilized was from 0.00 to 0.15 for all three crops. The risk premiums are treated as a potential source of revenue in the model as a technology fee charged by a biotech company. This thesis uses the Real Option methodology to evaluate GM traits as Option values at various stages of development. This approach helps managers decide the best possible option in making a certain decision today. It is also helpful in comparing different pathways (series of decisions) and thus better exploits the potential cash return in the future from investments made today (Figure D.1, Figure D.2). Three possible options to "continue", "wait", and "abandon" were modeled in this thesis. Such modeling determines the possible option values of GM traits at different stages of development depending on the kind of choices made at different points of time. This thesis shows that various GM traits that are out-of-money (OTM) at initial stages have increased probability of being in-the-money (ITM) at later stages of development. Sensitivities show that a share of potential technology fees and acreage of GM crops play a significant role in option values being ITM. Stacked traits provide a better chance of being ITM, thus the option to continue will be exercised by management. The option to wait causes reduction in option value. Among individual traits, drought tolerance has the greatest maximum option value in most cases. Therefore, if management has to choose the development of only one GM trait, it is most likely to choose to invest in the development of drought tolerance.

O melhoramento genético clássico de sementes milho (Zea mays L.) permitiu desenvolver inúmeras variedades, incluindo o milho com qualidade proteica melhorada (Quality Protein Maize, QPM), que visava aumentar os teores proteicos e as propriedades nutricionais. Por outro lado, novas variedades comerciais foram obtidas por vegetais geneticamente modificados (GM), com foco em parâmetros agronômicos. Em ambos os casos, a segurança dessas variedades para uso como alimento é uma das principais preocupações dos desenvolvedores e dos órgãos de regulamentação. A Equivalência Substancial é a base do sistema de avaliação da segurança de culturas geneticamente modificadas, no entanto alterações na expressão de proteínas não são devidamente analisadas e esclarecidas. As abordagens proteômicas complementam as técnicas de avaliação de biossegurança para alimentos GM, bem como permitem investigar possíveis efeitos indesejáveis derivados do melhoramento clássico. Os objetivos do presente estudo foram caracterizar e comparar os perfis proteicos de variedades de milhos convencionais melhorados (QPM) e geneticamente modificados (GMs), contra suas respectivas linhas convencionais utilizando técnicas proteômicas como eletroforese bidimensional (2-DE) e bottom up shotgun (gel-free). Num primeiro estudo, foram utilizadas três amostras de milho, sendo duas variedades convencionais com QPM (QP1 e QP2) e uma variedade convencional normal (CN). No segundo estudo, foram analisadas duas cultivares de milho GM (GM1 e GM2) e seus respectivos convencionais genitores (CG1 e CG2). As composições químicas de todas as amostras também foram avaliadas quanto a Equivalência Substancial. O extrato bruto proteico foi submetido à análise de eletroforese unidimensional (1-DE), bidimensional (2-DE) e bottom up shotgun (gel-free). As imagens dos mapas proteicos foram analisadas pelo software Image Master 2D Platinum 7.0 (GE). Os spots diferencialmente expressos e selecionados foram sequenciados por MS. Pela composição química das principais frações das amostras de milho foi possível identificar a equivalência substancial entre as amostras convencionais e GMs, bem como QPMs e sua convencional dentro das faixas de variabilidade esperadas da espécie. Nos géis 1-DE foram observadas bandas proteicas com perfis similares entre os grupos de amostras avaliadas para ambos estudos. Nas imagens dos géis 2-DE não houveram alterações extremas entre as amostras de milhos GMs e seus respectivos convencionais genitores (CGs), mas apenas diferenças na intensidade dos spots proteicos. As variedades QPMs e CN apresentaram diferenças devido à distribuição dos spots. Os mapas proteicos das amostras CG1 x GM1 e CG2 x GM2 apresentaram maior semelhança com porcentagens de matchings superiores a 70 %, enquanto as porcentagens de matchings entre variedades diferentes (QPMs e CN) foram menores. No total foram identificadas 219 proteínas das amostras CGs x GMs e QPMs x CN, classificadas quanto aos seus processos biológicos e função molecular. Em conclusão, foram encontradas diferenças entre os cultivares GMs e CGs, indicando uma variação normal entre variedades de milho, que não comprometem a segurança alimentar das amostras estudadas. Quanto às amostras com QPM e CN as diferenças encontradas são devido à sua distância nas linhagens ou germoplasma. / The classic genetic breeding of corn seeds (Zea mays) has enabled the development of many varieties, including corn with improved protein quality (Quality Protein Maize, QPM), which aimed to increase protein levels and nutritional properties. On the other hand, new commercial varieties have been obtained out of genetically modified (GM) vegetables, with a focus in agronomic parameters. In both cases, the safety of these varieties for food use is one of the main concerns for the developers and for the regulatory agencies. Substantial Equivalence is the basis of the safety evaluation system for genetically modified crops, however, alterations in the protein expressions are not been properly analyzed and clarified. The protein approaches complement the techniques of biosafety evaluation for GM foods, as well as allow for possible undesirable effects derived from classic improvement to be investigated. The goals of the current studies were to characterize and compare the protein profiles of the different varieties of conventionally improved (QPM) and genetically modified (GM) corn, against their respective conventional lines using proteomic techniques, such as, two-dimensional electrophoresis (2-DE), bottom up shotgun (gel-free) and masses spectrometry (MS). In a first instance of the study, three samples of corn were used, two of conventional varieties with QPM (QP1 and QP2) and one conventional normal variety (CN). In a second instance of the study, two cultures of GM corn (GM1 and GM2) were analyzed and their respective conventional genitors (CG1 and CG2). The chemical compositions of all the samples were also evaluated for their Substantial Equivalence. The protein raw extract was submitted to analysis of one-dimensional (1-DE), two-dimensional (2-DE) electrophoresis, and bottom up shotgun (gel-free). The protein image maps were analyzed by the Image Master 2D Platinum 7.0 (GE) software. The spots which were expressed and selected differentially were sequenced by MS. By the chemical composition of the main fractions of the samples of corn, it was possible to identify the substantial equivalence between the conventional samples and GMs, likewise with OPMs and their conventional in the ranges of variability which were expected for the species. On the 1-DE gel, it was observed protein bands with similar profiles amongst the groups of evaluated samples for both studies. In the images of the 2-DE gel, there were no alterations between the GM corn and their respective conventional genitors (CGs), but only differences in intensity of the protein spots. The OPM and CN varieties presented differences due to the distribution of the spots. The protein maps of samples CG1 vs. GM1 and CG2 vs. GM2 presented greater similarities with the percentages of matchings superior to 70%, while the percentage of matchings among different varieties (QPMs and CN) were smaller. In total, there were 219 proteins identified in the samples CGs vs. GMs and QPMs vs. CN, classified by the biologic processes and molecular function. In conclusion, there were found differences between the cultures of GMs and CGs, indicating a normal variation among the corn varieties, which do not affect the food security of the studied samples. As per the samples with QPM and CN, the differences found were due to the line distances or germplasm.

Zambia is one of the Southern African countries that experienced drought between 2001 and 2003. As a result the country had low levels of maize harvest, which is the country's main staple food. The Zambian population depends on maize for both household food security and cash. For this reason the Government of Zambia appealed for help from the international community in order to meet the shortfall of maize with a view to feeding its starving population, particularly in the rural areas. In response to the government's appeal, World Food Programme, (WFP) a United Nations Food agency brought assistance in the form of 27,000 tonnes of genetically modified (GM) maize into the country in July 2002. The Zambian government, however, rejected GM maize in both grain and milled forms, citing health, environmental and trade concerns with the European Union. Thus the focus of the research was to understand, on one hand the government's action of rejecting GM maize as food aid, while on the other hand accepting that drought-stricken small-scale farmers would go hungry as a result of this decision. Understanding the perceptions of government action was therefore essential to understanding the situation the situation fully. In other words, was it a good scientifically based government decision, or was it one made for political gain? Moreover, the purpose of this research was to present arguments about the safety and benefits of Genetic Modification technology for the world, particularly the developing countries. The findings of the study were that the levels of GM technology awareness in Zambia low among technocrats and too low among the rest of the population. To this end, government officials, relevant NGOs and small scale farmers were interviewed. In addition, small scale farmers in Chongwe and Magoye participated in focus group discussions. The findings were that although the Chongwe community experienced drought in their area, they were of the view that the government was justified in rejecting the GM maize from 2001-12 because they did not want to contaminate their land which they regarded as very suitable for farming. On the contrary, the Magoye people were among the communities that had been anxious to get food and were therefore not happy with the government's decision. The hunger suffered at the time in this community caused them to loot the government stores of GM Maize (provided as food aid) before the government could recall the stocks. The issue of access to the GM maize was apparently more important than debating on the potential impacts that might have occurred to their community. Other findings were the Zambian government's decision to reject GM maize (as food aid) impacted negatively, both economically and socially, in these areas. The majority of small-scale farmers experienced food shortages and resorted to various coping strategies such as picking wild-fruits and roots in the bush in order for them to survive. / Thesis (M.Soc.Sc.)-University of KwaZulu-Natal, Pietermaritzburg, 2006.

Univ., Diss.--Göttingen, 2004. / Literaturverz. S. [393] - 410.

O melhoramento genético clássico de sementes milho (Zea mays L.) permitiu desenvolver inúmeras variedades, incluindo o milho com qualidade proteica melhorada (Quality Protein Maize, QPM), que visava aumentar os teores proteicos e as propriedades nutricionais. Por outro lado, novas variedades comerciais foram obtidas por vegetais geneticamente modificados (GM), com foco em parâmetros agronômicos. Em ambos os casos, a segurança dessas variedades para uso como alimento é uma das principais preocupações dos desenvolvedores e dos órgãos de regulamentação. A Equivalência Substancial é a base do sistema de avaliação da segurança de culturas geneticamente modificadas, no entanto alterações na expressão de proteínas não são devidamente analisadas e esclarecidas. As abordagens proteômicas complementam as técnicas de avaliação de biossegurança para alimentos GM, bem como permitem investigar possíveis efeitos indesejáveis derivados do melhoramento clássico. Os objetivos do presente estudo foram caracterizar e comparar os perfis proteicos de variedades de milhos convencionais melhorados (QPM) e geneticamente modificados (GMs), contra suas respectivas linhas convencionais utilizando técnicas proteômicas como eletroforese bidimensional (2-DE) e bottom up shotgun (gel-free). Num primeiro estudo, foram utilizadas três amostras de milho, sendo duas variedades convencionais com QPM (QP1 e QP2) e uma variedade convencional normal (CN). No segundo estudo, foram analisadas duas cultivares de milho GM (GM1 e GM2) e seus respectivos convencionais genitores (CG1 e CG2). As composições químicas de todas as amostras também foram avaliadas quanto a Equivalência Substancial. O extrato bruto proteico foi submetido à análise de eletroforese unidimensional (1-DE), bidimensional (2-DE) e bottom up shotgun (gel-free). As imagens dos mapas proteicos foram analisadas pelo software Image Master 2D Platinum 7.0 (GE). Os spots diferencialmente expressos e selecionados foram sequenciados por MS. Pela composição química das principais frações das amostras de milho foi possível identificar a equivalência substancial entre as amostras convencionais e GMs, bem como QPMs e sua convencional dentro das faixas de variabilidade esperadas da espécie. Nos géis 1-DE foram observadas bandas proteicas com perfis similares entre os grupos de amostras avaliadas para ambos estudos. Nas imagens dos géis 2-DE não houveram alterações extremas entre as amostras de milhos GMs e seus respectivos convencionais genitores (CGs), mas apenas diferenças na intensidade dos spots proteicos. As variedades QPMs e CN apresentaram diferenças devido à distribuição dos spots. Os mapas proteicos das amostras CG1 x GM1 e CG2 x GM2 apresentaram maior semelhança com porcentagens de matchings superiores a 70 %, enquanto as porcentagens de matchings entre variedades diferentes (QPMs e CN) foram menores. No total foram identificadas 219 proteínas das amostras CGs x GMs e QPMs x CN, classificadas quanto aos seus processos biológicos e função molecular. Em conclusão, foram encontradas diferenças entre os cultivares GMs e CGs, indicando uma variação normal entre variedades de milho, que não comprometem a segurança alimentar das amostras estudadas. Quanto às amostras com QPM e CN as diferenças encontradas são devido à sua distância nas linhagens ou germoplasma. / The classic genetic breeding of corn seeds (Zea mays) has enabled the development of many varieties, including corn with improved protein quality (Quality Protein Maize, QPM), which aimed to increase protein levels and nutritional properties. On the other hand, new commercial varieties have been obtained out of genetically modified (GM) vegetables, with a focus in agronomic parameters. In both cases, the safety of these varieties for food use is one of the main concerns for the developers and for the regulatory agencies. Substantial Equivalence is the basis of the safety evaluation system for genetically modified crops, however, alterations in the protein expressions are not been properly analyzed and clarified. The protein approaches complement the techniques of biosafety evaluation for GM foods, as well as allow for possible undesirable effects derived from classic improvement to be investigated. The goals of the current studies were to characterize and compare the protein profiles of the different varieties of conventionally improved (QPM) and genetically modified (GM) corn, against their respective conventional lines using proteomic techniques, such as, two-dimensional electrophoresis (2-DE), bottom up shotgun (gel-free) and masses spectrometry (MS). In a first instance of the study, three samples of corn were used, two of conventional varieties with QPM (QP1 and QP2) and one conventional normal variety (CN). In a second instance of the study, two cultures of GM corn (GM1 and GM2) were analyzed and their respective conventional genitors (CG1 and CG2). The chemical compositions of all the samples were also evaluated for their Substantial Equivalence. The protein raw extract was submitted to analysis of one-dimensional (1-DE), two-dimensional (2-DE) electrophoresis, and bottom up shotgun (gel-free). The protein image maps were analyzed by the Image Master 2D Platinum 7.0 (GE) software. The spots which were expressed and selected differentially were sequenced by MS. By the chemical composition of the main fractions of the samples of corn, it was possible to identify the substantial equivalence between the conventional samples and GMs, likewise with OPMs and their conventional in the ranges of variability which were expected for the species. On the 1-DE gel, it was observed protein bands with similar profiles amongst the groups of evaluated samples for both studies. In the images of the 2-DE gel, there were no alterations between the GM corn and their respective conventional genitors (CGs), but only differences in intensity of the protein spots. The OPM and CN varieties presented differences due to the distribution of the spots. The protein maps of samples CG1 vs. GM1 and CG2 vs. GM2 presented greater similarities with the percentages of matchings superior to 70%, while the percentage of matchings among different varieties (QPMs and CN) were smaller. In total, there were 219 proteins identified in the samples CGs vs. GMs and QPMs vs. CN, classified by the biologic processes and molecular function. In conclusion, there were found differences between the cultures of GMs and CGs, indicating a normal variation among the corn varieties, which do not affect the food security of the studied samples. As per the samples with QPM and CN, the differences found were due to the line distances or germplasm.

Genetically modified (GM) crops are commercially cultivated worldwide but there are concerns on their possible negative impacts on soil biodiversity. A glasshouse study was conducted to determine effects of Bt maize residues on soil microbial diversity. Residues of Bt maize (PAN 6Q-308B) and non-Bt maize (PAN 6Q-121) were incorporated into the soil and corresponding maize seeds planted. The treatments were replicated three times. Fertilizer and water application were similar for both treatments. Rhizosphere and bulk soil was destructively sampled from each treatment and analyzed for microbial community level physiological profiles using Biolog plates with 31 different carbon substrates. Absorbance in the Biolog plates was recorded after 72 h of incubation at 20oC. Arbuscular mycorrhizal fungi spore counts were also determined. Field studies were conducted at the University of Free State and University of Fort Hare Research Farms to determine the effects of growing Bt maize on soil microbial diversity. One Bt maize cultivar (PAN6Q-308B) and non-Bt maize (PAN6Q-121) were grown in a paired experiment at University of Free State farm, while two Bt maize (DKC61-25B and PAN6Q-321B) and their near-isogenic non-Bt maize lines (DKC61-24 and PAN6777) were grown in a randomized complete block design with three replicates. Fertilization, weed control and water application, were similar for both Bt maize cultivars and their non-Bt maize counterparts. Rhizosphere soil samples were collected by uprooting whole plants and collecting the soil attached to the roots. The samples were analysed for microbial diversity and for arbuscular mycorrhizae fungal spore counts. Principal component analysis showed that soil microbial diversity was affected more by sampling time whereas genetic modification had minimal effects. Presence of residues also increased the diversity of microorganisms. Mycorrhizal fungal spores were not affected by the presence of Bt maize residues. Growing Bt maize had no effect on the soil microbial diversity in the rhizosphere.

Genetically modified (GM) crops gained attention in southern Africa as countries are struggling with food insecurity and poverty to achieve sustainable development. The controversy around GM crops have provoked heated debates. GM crops are often perceived as a global risk to human health and the environment. The research question is what are the perceptions of environmental educators regarding the use of GM crops toward sustainable development. In the Decade of Education for Sustainable Development environmental educators will need to be key role players in addressing crucial issues such as GM crops. Their perceptions hold many implications for educational programmes. Environmental educators interviewed perceive GM crops as a serious issue. As mediators in a multidisciplinary setting between science and society, environmental educators can play a functional role. Open processes that require greater participation, criticality and reflexivity need to be facilitated in a complex biophysical and social context in southern Africa. / Educational Studies / M. Ed.(Environmental Education)

Genetically modified (GM) crops gained attention in southern Africa as countries are struggling with food insecurity and poverty to achieve sustainable development. The controversy around GM crops have provoked heated debates. GM crops are often perceived as a global risk to human health and the environment. The research question is what are the perceptions of environmental educators regarding the use of GM crops toward sustainable development. In the Decade of Education for Sustainable Development environmental educators will need to be key role players in addressing crucial issues such as GM crops. Their perceptions hold many implications for educational programmes. Environmental educators interviewed perceive GM crops as a serious issue. As mediators in a multidisciplinary setting between science and society, environmental educators can play a functional role. Open processes that require greater participation, criticality and reflexivity need to be facilitated in a complex biophysical and social context in southern Africa. / Educational Studies / M. Ed.(Environmental Education)

Abstracts in English, Xhosa and Zulu / This quantitative study explores procedural knowledge, perception of GM food products and factors that influence the purchasing decision of 326 respondents by means of a questionnaire. Recruitment of the respondents was done by approaching various businesses and Schools in Mooi River to which the questionnaire was distributed to their respective personnel. The respondents’ showed that they were not very knowledgeable of GM food products, but were not particularly ignorant either. The results also showed that they did not look for any GM-related information from various sources and believed that scientists were the most credible source of GM-related information. In general, the respondents did not perceive GM food products as having any nutritional benefits; did not perceive GM food products to provide an economic benefit, except to increase food supplies by boosting the economy through the implementation of biotechnology; and perceived longer shelf life as a beneficial GM food product quality. The respondents also feared the susceptibility to cancer, toxicity, allergic reactions, alterations in kidney functions, immune malfunction and especially infertility problems after consumption of GM food products. The respondents did not show particular fear towards the ethical aspects of GM food products, except in that GM food products are produced in an unethical manner. Fear was also not shown towards the consumption aspects of GM food products including scepticism towards the safety GM food products and possible threats to living things. The respondents indicated that increased food supplies through the production of GM food products, possible cancer development after consumption, allergenicity, reduced usage of pesticides and harmful effect on the environment were GM-related factors that would influence their purchasing decision of GM food products. The general GM-related barriers that influenced the respondents purchasing decision of GM food products included not looking out for GM food products in particular, knowing too little about GM food products, not having a particular interest in GM food products and never knowing if a product contains a GM component or not. / Esi sifundo, nesiqhutywa ngokuqwalasela amanani ezenzeko, saphanda ngolwazi lwendlela ebonwa ngayo inkqubo yeemveliso zokutya zeGM (iimveliso ezinyangwe ngobuchule obaziwa ngelesiNgesi elithi genetically modified) kwakunye neemeko eziphembelela izigqibo zokuthenga ezi mveliso, zigqibo ezo zathathwa ngabathathi nxaxheba abangama-326 nabathi baphendula uluhlu lwemibuzo. Ukuloba/ukurhwebesha abathathi nxaxheba kwenziwa ngokucela uncedo kumashishini nezikolo eziseMooi River. Abathathi nxaxheba baveza ukuba abanalwazi kakuhle ngeemveliso zokutya zeGM, kodwa banalo ufifana. Iziphumo zadiza ukuba azange baphande ulwazi olumalunga nonyango lweemveliso kwaye babekholelwa ukuba iingcali zenzululwazi zizo ezaziyimithombo yolwazi ethembekileyo malunga nalo mbandela. Ngokuthe gabalala, abathathi nxaxheba babengaziboni ziluncedo kwisondlo okanye kuqoqosho ezi mveliso zokutya zeGM, kwaye babelindele ukuba ezi mveliso zandise ukutya okuveliswayo ngokukhuthaza ezoqoqosho ngokusebenzisa ubuchwepheshe bezendalo, (ibiotechnology). Babecinga ukuba uphawu oluluncedo lokutya okuveliswe ngeendlela zeGM kukuba kuhlala ixesha elide, akonakali msinya. Abathathi nxaxheba babesoyika ukuba bangasifumana lula isifo somhlaza, bangafumana ukutyhefeka kokutya, ukusoleka (iallergy), ukuchaphazeleka kokusebenza kwezintso, ubuthathaka bamajoni omzimba, okanye ubuthathaka benzala emva kokutya iimveliso zokutya zeGM. Abazange babonakalise uloyiko olumandla malunga nombandela weenqobo zesimilo ezayanyaniswa neemveliso zokutya zeGM, ngaphandle kokuba ezi mveliso ziveliswa ngendlela engenasimilo sisulungekileyo. Kwakhona, abazange babonakalise loyiko malunga nokutya iimveliso zokutya zeGM, bengazange bakrokrele ukungakhuseleki kwezi mveliso okanye ukuba yingozi kwazo kwezinye izidalwa. Abathathi nxaxheba baxela ukuba izigqibo zabo zokuthenga iimveliso zokutya zeGM zingaphenjelelwa kukucinga ngokwanda kokutya okuveliswayo, ukuvela komhlaza emva kokuzitya, ukusolwa, ukucutha ukusebenzisa izibulali zinambuzane kunye neziphumo ezinobungozi kwindalo esingqongileyo. Imiqobo jikelele engqamene nonyango lweGM neyaphembelela izigqibo zabathathi nxaxheba malunga nokuthenga iimveliso zokutya zeGM ziquka ukwazi kancinci ngeemveliso zokutya zeGM, kukungabi namdla kwiimveliso zokutya zeGM nokuba ubani angabi nalwazi lokuba imveliso ethile inalo na unyango lweGM okanye ayinalo. / Lolu cwaningo olugxile kwinani luye lwaphenya ulwazi olumayelana nolwazi lwengqubo, umqondo omayelana nenhlobo yokudla okuguquliwe (GM food) kanye nezinto ezinomthelela phezu kwesinqumo sokuthenga sabaphenduli bemibuzo abanga-326, lokhu kwenziwe ngokusebenzisa umbhalo oqukethe imibuzo. Abaphenduli bemibuzo batholwe ngokunxenxa amabhizinisi kanye nezikole ezihlukahlukene endaweni yaseMooi River. Abaphenduli bemibuzo bakhombisile ukuthi babenganalwazi ngemikhiqizo yokudla eguquliwe (GM), kanti laba baphenduli abazange bakhombise ukungabambisani nalolu cwaningo. Imiphumela iyakhombisa ukuthi abaphenduli abazange bafune ukuthola noma yiluphi ulwazi olumayelana Nokudla kwe-GM kwimithombo eyahlukahlukene kanti baye bakholwa ukuthi ososayensi bayimithombo yolwazi ethembekayo. Empeleni, abaphenduli abazange baqonde imikhiqizo yokudla kwe-GM njengokudla okunenzuzo yomsoco noma inzuzo yezomnotho kanti bebelidele le mikhiqizo ukuba yongeze inani lokudla elithunyelwayo ngokuxhasa umnotho ngokusebenzisa uhlelo lwe--biotechnology. Bakholelwa ekutheni umkhiqizo uhlale isikhathi eside emasheluvini, lokho okuyinzuzo kwikhwalithi yemikhiqizo yokudla kwe-GM. Abaphenduli baye besaba ukungenwa yisifo somdlavuza, ushevu, ukuguliswa yinhlobo yokudla okuthile, ukushintshana kokusebenza kwezinso, ukungasebenzi kahle kwamasosha omzimba kanti ikakhulu izinkinga zokwehluleka ukuzala ngemuva kokudla imikhiqizo yokudla kwe-GM. Abaphenduli abazange bakhombise ukwesaba mayelana nokuziphatha kwimikhiqizo yokudla kwe-GM, ngaphandle kokuthi nje le mikhiqizo ikhiqizwa ngendlela ephambene nomthetho. Abaphenduli abazange futhi bakhombise ukwesaba mayelana nodaba lokudliwa komkhiqizo wokudla kwe-GM,kuxutshwa phakathi ukuthandabuza mayelana nokuphepha kwale mikhiqizo kanye nalokho okungahle kuphazamise izinto eziphilayo. Abaphenduli baye bakhombisa ukuthi imizamo yokuthi kube nokudla okuningi ngokukhiqiza imikhiqizo yokudla kwe-GM, amathuba wokuphathwa yisifo somdlavuza ngemuva kokudla lokho kudla, ukungathandwa wukudla okuthize, ukunciphiswa kwezinga lokusebenziswa kwezibulalizinambuzane kanye nomphumela oyingozi phezu kwemvelo bekuyizinto ezihlobene nokudla kwe-GM lokho okuzoshintsha indlea yabo yokuthenga imikhiqizo yokudla kwe-GM. Izihibhe ezejwayelekile ezihlobene ne-GM eziye zashintsha isinqumo sabaphenduli sokuthenga imikhiqizo yokudla kwe-GM bekuxuba phakathi ukuphuma bayofuna ikakhulu imikhiqizo yokudla kwe-GM, luncane kakhulu ulwazi abanalo ngemikhiqizo yokudla kwe-GM, kuxuba ukungathandi imikhiqizo yokudla kwe-GM kanye nokungazi ukuba ngabe umkhiqizo wequkethe umkhakha we-GM noma akunjalo. / Life and Consumer Sciences / M.A. (Consumer Science)

Text in English / South Africa is one of the biggest producers of genetically modified crops in the world. However, recent studies in South Africa show a low public willingness to consume genetically modified crops and accept modern agricultural biotechnology. The study analysed public perception towards consuming genetically modified crops and the acceptance of modern agricultural biotechnology in South Africa. 220 participants (N = 220) were sampled from the city of Kempton Park and the Chi-square formula was used to determine how well the sample represented the population under study. Data was collected using a 7-point Likert scale questionnaire designed following the guidelines for developing a theory of planned behaviour questionnaire in Ajzen (1991, 2001). Data analyses were carried out using the Statistical Package for Social Sciences (SPSS). The Cronbach’s alpha and Exploratory Factor Analysis were both used to determine the internal consistency and validity of the questionnaire. Correlations, independent sample t-tests, ANOVA, linear regression, and path analysis were also conducted. Findings of the study confirmed that there is low public willingness to consume genetically modified crops and to accept modern agricultural biotechnology in South Africa. / Development Studies / M.A. (Development Studies)