Konkurrensen mellan svenska och internationella företag har på senare år ökat. Detta ställer krav på hur svenska företag måste agera för att överleva. En alternativ konkurrensfördel för att hantera dessa externa förändringar är att arbeta med intern effektivitet. Det studerade fallföretaget Bong i Kristianstad har på senare tid haft problem med att mäta sin interna effektivitet, mer precist sin produktionseffektivitet. Ett företag som inte beräknar sin produktionseffektivitet kommer få det svårt att prioritera rätt områden, processer, aktiviteter och lösningar för förbättringsarbete.    Syftet med arbetet är att identifiera relevanta parametrar för att beräkna och visualisera produktionseffektivitet inom tillverkningsindustrin. Målet med studien är att ta fram en modell för beräkning och visualisering av produktionseffektivitet som kan utgöra en grund för förbättringsarbete. Målet är också att utifrån denna modell identifiera områden som kan förbättras samt att ge förbättringsförslag utifrån de identifierade områdena.   Genom en kvalitativ fallstudie erhölls kunskap om företagets arbetssätt och egen tolkning av produktionseffektivitet. Parametrar identifierades, en modell togs fram, beräkningar genomfördes och resultatet analyserades för att visualisera och bestämma företagets faktiska produktionseffektivitet enligt OEE/TAK-metoden. Utifrån analysen drogs slutsatser att företagets produktionseffektivitet beräknad enligt egen metod var bristfällig och ej representativ. Det bevisas också varför metoden är bristfällig. Områden för förbättring identifierades, där ställtider utgör den största förlusten för företagets produktionseffektivitet. Tre olika förbättringsförslag genererades och implementerades teoretiskt för att bevisa vilka positiva ekonomiska och psykosociala effekter de har på verksamheten. / Over the past few years’ competition between Swedish and international companies have increased. This puts requirements on how Swedish companies must act to survive. To handle these external changes, continuous work with internal efficiency is a solution for competitive advantage. The studied company Bong in Kristianstad has recently had problems concerning measurements of their internal efficiency, more precisely their production efficiency. A company that does not measure their production efficiency will have a hard time prioritizing the right areas, processes, activities, and solutions for improvement work. The purpose of this study is to identify relevant parameters with the intention of calculating and visualizing production efficiency within a manufacturing industry. The goal of the study is to develop a model for calculation and visualization of production efficiency that can be used as a basis for improvement work. The goal is also to be able to use this model in the purpose of identifying different areas that can be improved and to create suggestions for improvement for these areas. Knowledge was obtained by doing a qualitative case study concerning the company's work methods and their own interpretation of production efficiency. Parameters were identified, a model was created, calculations were done, and the results were analyzed to be able to visualize and determine the company's actual production efficiency based on the OEE/TAK-method. The analysis and conclusion showed that the studied company’s method for calculating their production efficiency was inadequate and non-representative. It was also proved why the current method was inadequate. Areas for improvement were identified where setup times constituted the biggest loss for the company's production efficiency. Three suggestions for improvement work were generated and implemented theoretically to prove what positive economic and psychosocial effects they have on the business. / <p>Digital presentation som effekt av pandemi.</p>

Global goals to reduce the greenhouse gases and CO2 emission has challenged many industries to innovate new technologies or shift to different products. Electrification of transportation has been considered a major improvement in this respect, which affects the entire transportation value chain including the manufacturing of heavy-duty vehicles. The importance and degree of changes that shifting toward electrification imposes on the truck manufactures value chain is subject to the study with a focus on the production stage of the value chain. The research also creates some insights to understand the sources of competitive advantage in the production of BEV.    Based on the authors’ knowledge and investigations, the contribution of this study in the research field is that the concept of the value chain together with Delphi method is implemented for the first time in the BEV industry to identify the impact of technology transformation on the production activities and competitive advantage. Furthermore, it contributes to highlight the unclarities in the BEV value chain activities that need more researches in order to create a more clear technology transformation path for the heavy-duty vehicle industry. The research findings imply that electrification has a big impact on the production value chain activities. The number of employees will be reduced that in turn creates a source of cost advantage for the company by reducing the cost per vehicle production. The assembly time is also shorter that makes it easier to respond to the market dynamic faster and reduces the cost of products storage. However, the risk for production stops is considered higher in BEV compare to ICE vehicles. Another finding is that the outsourcing of the components has a negative effect on the competitive advantage of the company and production efficiency. There is no difference between the impact of production activities on the company value chain in both BEV and ICE manufacturing. There is also a consensus on the more opportunities in BEV manufacturing to increase the production efficiency and lowering the cost.

The global carbon (C) balance is vulnerable to disturbances that alter terrestrial C uptake and loss. Moderate disturbances that kill or defoliate only a subset of canopy trees such as insect defoliation, drought, and age-related senescence are increasing in extent and frequency; yet, little is known about the effect of moderate disturbance on forest production and the mechanisms sustaining or supporting the recovery of the C cycle across a range of moderate disturbance severities. We used a broad plot-scale gradient of upper canopy tree mortality within a large manipulation of forest disturbance to: 1) quantify how aboveground wood net primary production (ANPPw) responds to a range of moderate disturbance severities and; 2) identify the primary mechanisms supporting ANPPw resistance or resilience following moderate disturbance. We found that ANPPw was highly resistant to moderate disturbance, with production levels sustained following the senescence of 9 to > 60 % of the upper canopy tree basal area. As upper canopy gap fraction increased with rising disturbance severity, greater light availability to the subcanopy enhanced leaf-level C uptake and the growth of this formerly light-limited canopy stratum, compensating for upper canopy production losses. As a result, whole-ecosystem production efficiency (ANPPw/LAI) increased at high levels of disturbance severity and leaf area loss. These findings provide a mechanistic explanation for sustained ANPPw across the disturbance gradient, in which the physiological and growth enhancement of undisturbed vegetation was proportional to the level of disturbance severity. Our results have important ecological and management implications, showing that moderate disturbances may minimally alter ecosystem functions such as C storage.

隨著資訊科技的技術進步一日千里，資訊科技在企業營運的過程中扮演著越來越重要的角色，企業對資訊科技軟體、硬體的投資支出在近幾年內亦以驚人的速度成長。然而，資訊科技是否能為企業帶來實質的效益，過去的研究存在相當不一致的看法：部分研究的結果肯定資訊科技對組織的貢獻，但也有部分研究顯示資訊科技未能為企業的生產力或財務績效帶來正面的幫助，甚至還有負面的影響，因而有「資訊科技的生產力弔詭」(IT productivity paradox)之說出現。 　　本研究為求對資訊科技的效益有更深入、更全面的瞭解，以282家台灣上市公司為研究對象，從生產力變動、生產效率以及財務績效這三個不同的觀點，探討資訊科技對企業所能產生的效益。 　　一、資訊科技對企業生產力變動的影響 　　此部分研究以生產經濟學中的Cobb-Douglas生產函數為理論基礎，將資訊科技投資視為企業生產投入要素之一，探討其對企業生產力變動是否具有正向的影響。研究結果發現：資訊科技投資不論對企業產出變動、或者單位勞動成本生產力之變動，均具有顯著正向的影響。 　　二、資訊科技對企業生產效率的影響 　　此部分研究分為兩階段：首先以資料包絡分析法(DEA)計算樣本企業之相對技術效率，再以Tobit迴歸模型探討資訊科技與資訊人員密度對企業技術效率是否具有正向的影響。研究結果發現：資訊科技投資與資訊人員密度，二者對企業的生產效率均具有顯著正向的影響。 　　吾人取樣本公司次年之資料計算其次年之相對技術效率，並進行實證研究。發現資訊科技投資對次年的生產效率亦具有顯著正向的影響，顯示資訊科技投資對企業之生產效率，其影響力將可持續一年以上。 　　三、資訊科技對企業財務績效的影響 　　此部分研究係以迴歸模型，探討資訊科技投資與資訊人員密度對企業之資產報酬率、淨值報酬率及常續性利益率等三項財務績效指標的影響。研究結果發現：資訊科技投資與資訊人員密度，二者對企業之各項財務績效指標均具有顯著正向的影響。 　　吾人以次年之財務績效指標資料進行實證研究，發現資訊科技投資對企業次年之資產報酬率、常續性利益率仍然具有顯著正向的影響，對淨值報酬率則無顯著影響，此結果顯示資訊科技投資對企業之財務績效，具有持續一年以上之影響力。 　　歸納以上所述，本研究發現：資訊科技投資與資訊人員之密度對企業之生產力變動、生產效率及財務績效均有顯著正向的影響，且資訊科技投資能對企業持續發揮一年以上之效益。 　　此外，吾人在敏感性分析中以149家台灣的上櫃公司為研究對象，發現多數假說在上櫃公司群組中均未能獲得支持，與上市公司群組之實證結果存在極大的差異。其原因可能為資訊科技投資具有規模效應，必須達一定之規模方能發揮效果；亦有可能因為上櫃公司之組織成熟度、生產設備完備程度均相對不足，導致無法使資訊科技投資發揮其應有之功能。惟此現象真正的原因，仍有待未來研究者之深入探討。 / This study examines the impacts of information technology (IT) investment on firm's productivity growth, production efficiency and financial performances. Cobb-Douglas production function is used to examine whether IT has positive contribution on firm's productivity growth. The study uses Data Envelopment Analysis (DEA) to calculate firm's production efficiency. Then we use Tobit regression to test the relationship between IT investment and production efficiency. Finally, a set of financial performance indicators, which includes return on asset (ROA), return on equity (ROE) and return on sales (ROS), is chosen to examine the impact of IT investment on firm's financial performances. The sample includes 282 listed companies in Taiwan. The result shows that IT investment is positively related to firm's productivity growth, production efficiency and financial performance. The benefit can remain longer than one year. 　　The sensitivity analysis uses 149 OTC companies as samples to test the relationship between IT investment and business performances. It is found that most of the relationships existing in the listed companies group are not significant in the OTC companies group. Maybe there exists scale effect or learning effect in IT application field, which makes the result so different. It needs further studies to distinguish the real reason.

隨著經濟的全球化，外人直接投資(foreign direct investment)儼然成為國際間技術擴散的主要途徑，技術外溢也成為外人直接投資發生下的重要議題，尤其利用跨國公司的先進技術促進本國生產力的提升，為開發中國家致力於吸引外人直接投資前來投資的強大動機。其中來自港、澳、台地區的資金佔有相當程度的地位，主要原因為地理位置與中國大陸相近、文化相似度高有很大的關係，但隨著中國大陸實施改革開放政策以來，這種狀況開始有所改變，愈來愈多的大型跨國公司前進中國大陸，觀察這十年流入中國大陸的外人直接投資加總，來自香港、日本、美國和韓國的投資金額分別位居一、二、三和四名，故其造成的後續效應不容小覷。 　　本研究以中華人民共和國國家統計局進行年度工業企業數據庫的1998-2006年間的製造業廠商資料，利用STATA統計軟體進行橫斷面資料分析，再依照中華人民共和國國家統計局工業分類和黃志聰、高安邦和陳子芸(2003)的分類方法，將中國大陸製造業分成輕工業、重工業、化學工業和高科技產業，研究針對外人直接投資進度中國大陸後，衍生出產業技術外溢效果和生產效率的改變進行討論。 / With economic globalization, foreign direct investment has become a major international technology diffusion channels. The spillover effect has become an important topic under foreign direct investment, especially using their advanced technology for productivity upgrade. It is committed to developing countries to attract foreign direct investment a strong incentive to invest. The capital from Hong Kong, Macao and Taiwan plays an important role in China, mainly because of the highly correlative location, culture and language. The situation has changed accompanied by the implementation of the reform and open policy in China. More and more large multinational enterprises enter China. According to the sum of foreign direct investment of China within a decade, the investment amount from Hong Kong, Japan, America and Korea come in the first, second, third and forth places. Therefore, the upcoming effects cannot be underestimated. In this study, The manufacturers database of the annual industrial enterprises from National Bureau of Statistics of China in the period of 1998 to 2006 is used for cross-sectional data analysis of STATA statistical software. And then according to the classification of National Bureau of Statistics industry and Huang, Kao and Chen (2003), the manufacturing sector in China is divided into light industry, heavy industry, chemical industry and high-tech industries. This study discusses the change of spillover effects and production efficiency after the entering of foreign direct investment in China.

依據天津市於改革開放後（1978年~2010年）農業投入產出資料建立了隨機邊界生產函數模型，並對天津農業生產效率進行了測算和分析。研究結果發現天津的農業增長主要依賴流動資本的投入，另因天津市地理環境因素，溫度高低及降雨量多寡在農業生產效率中也具有關鍵影響力，農業生產技術效率水準隨時間增加有逐漸提升趨勢，政府財政支農及農業貸款的數字逐年提升，但研究結果顯示政府財政支農金額及農業貸款對於天津農業生產效率無影響。 / Based on the agricultural input and output data from Tianjin City after the reform and opening (1978~2010), a random marginal productivity function model was built. And tests and analyses regarding the agricultural production efficiency in Tianjin City were performed. According to the research results, the agricultural growth in Tianjin City mainly depended on the input of current capital. In addition, due to the geographic and environmental factors in Tianjin City, temperature and rainfall both played an important role in the agricultural production efficiency. The agricultural production technology level had been increasing with time. The amounts of the government’s financial support for agriculture and agricultural loans had been increasing year by year. However, the research results show that these amounts had no influence on the agricultural production efficiency in Tianjin City.

在運動產業逐漸興起的現代，如何評比球隊或運動員的表現好壞，似乎成了現在新興的熱門話題。經濟學上用來評估一家廠商的生產績效優劣，常用的是生產效率分析，生產活動偏離生產邊界的程度代表不效率高低。而球隊比賽的過程就像廠商生產的過程，運用各種投入得到產出。在籃球比賽中，比賽的投入可為球隊的各種技術統計，例如：投籃命中率、抄截、火鍋…等等，產出則是比賽的得分數。因此，在本篇文章中，我們利用經濟學中的生產效率分析來分析球隊的表現優劣，即評估各球隊發揮其潛能的程度。 評估生產效率的模型有很多，由於比賽的性質，有時候統計誤差、運氣也佔了很重要的部份，所以在選擇模型時，選的是隨機邊界效率分析模型（Stochastic Frontier Approach, SFA），除了利用隨機邊界分析模型分析球隊的生產效率，也利用預估的效率值來預測比賽結果排名，並與一般常用來預測結果的模型PROBIT MODEL做比較。我們利用大陸男子甲A籃球聯賽2003-2004和2004-2005賽季作為實證樣本，發現隨機邊界分析模型不只可以用來評估效率，在預測比賽結果排名上，隨機邊界分析模型預測能力則與PROBIT MODEL沒有顯著統計性的差異。 關鍵字：生產效率、隨機邊界分析法、運動產業 / Today, sports industry is getting popular, and how to evaluate the performance of sports teams or players seems also to be a newly hot interesting topic. In economics, production efficiency is often applied to evaluate a firm’s production performance. The inefficiency of a production activity is measured as its deviation from the production frontier. The process of a sport game is similar to a firm’s production process, which transforming various inputs into output(s). For basketball games, inputs can be the various technical statistics, such as field goal rate, steals, blacks, assistant attack, etc. Output(s) can be the scores of the teams got. Therefore, in this paper we use the production efficiency to gauge the performance of sports teams. There are many models measuring production efficiency. In this paper we choose the Stochastic Frontier Approach (SFA) to evaluate the sport team’s efficiency on account of the white noises which exist in the sport game obviously. We also use estimated efficiency scores to predict the outcome ranking of teams, and compare it to that of the PROBIT MODEL which is usually used to predict the outcome of a game. The sample we used are the results of the CBA men’s regular season and playoff season, and we found that the SFA is not only to evaluate efficiency but also can predict the outcome of competition, and its prediction ability is not significantly statistically different to that of PROBIT MODEL. Keywords: Production Efficiency, Stochastic Frontier Approach, Sports Industry

In my diploma thesis I was tested six types of feed. I tested in 3 repetitions in the recirculating system with biological treatment of water. Tested fishes african catfish (Clarias gariepinus) weighted between 200 ? 800 g per piece, were deployed into 18 aquariums with volume of 190 litres per aquarium. The whole experiment took place in five partial 3-week periods in the intensive breeding of the laboratory - controlled reproduction of fishes FROV JCU. The average water temperature during the experiment was 27 °C. The main objective of the thesis was to observe production efficiency of tested types of feed, speed of the growth of fishes, feed rates and financial costs. Afterwards, determinativ of yield and organoleptic evaluation was determined, followed by laboratory examination of composition of meat. The results of production indicators (Specific Growth Rate, Relative Growth Rate, Food Conversation Ratio) were most favorable for 3 types of feed ? Haltáp (SGR=0,81 %; RGR=126 %; FCR=1,45), Coppens TROCO SUPREME-22 (SGR=0,73 %; RGR=105 %; FCR=1,19), Coppens TROCO PRIME-18 (SGR=0,68 %; RGR=97 %; FCR=1,26). The lowest costs for 1 kg of fish increment were achieved for these specific types of feed Haltáp and Aller Aqua Focus (45 Kč a 46 Kč). In the organoleptic analysis was found positive evaluation of meat of all tested fishes. Chemical composition of meat was (in term of proteins and fats content) most favorably documented for the hungarian feed called Haltáp (proteins=19,22 % and fats=4,85 %).

L’étude du cycle du carbone (C) dans les écosystèmes terrestres est fondamentale afin de comprendre leur rôle dans le cycle du carbone ainsi que les répercussions du changement climatique sur ces écosystèmes. L'objectif général de la thèse qui est de faire un suivi intra-annuel de l’allocation du C au sein de différents écosystème terrestre (forêt et prairie), se place dans ce contexte. Dans un premier temps les efficiences de production de biomasse aérienne (aBPE, rapport entre les quantités de carbone stockées dans la biomasse aérienne et absorbées) sont calculées pour des intervalles de temps réduits, du mois à la semaine selon l’écosystème (forêt et prairie). Dans un second temps, une estimation plus précise de l'allocation du carbone en forêt a été effectuée, en suivant la formation de certains composés structuraux (hémicelluloses et cellulose+lignine). Un possible lien entre la variation de cette allocation selon les conditions climatiques a été étudiée. Les efficiences correspondantes ont également été calculées mensuellement pour avoir une idée plus précise du stockage durable du C dans cet écosystème. Une comparaison avec la prairie a été réalisée en termes d’aBPE afin d'analyser les capacités respectives des 2 écosystèmes à s'adapter aux changements climatiques et à jouer un rôle dans la mitigation des gaz à effet de serre. Dans le cadre de l'Observatoire Pérenne de l'Environnement, deux écosystèmes voisins situés en Meuse (55) ont été instrumentés dans le but de mesurer en continu les échanges de CO2 à l’interface couvert‐atmosphère, ainsi que les conditions micrométéorologiques dans lesquelles ces échanges se produisent. De plus, un suivi régulier du développement des écosystèmes a également été réalisé / The study of the carbon (C) cycle is important in terrestrial ecosystems (forest, grassland) in order to understand their behavior, their role in the C cycle and also the impact of climate change on them. The general study of this thesis which is to monitor the intra-annual allocation of C into different terrestrial ecosystem (forest and grassland), lays within this context. Firstly we calculated aboveground biomass production efficiencies (aBPE, ratio between the quantity of C stored into the aboveground biomass and absorbed) intra-annually, weekly or monthly depending on the ecosystem (grassland and forest respectively). Secondly a more precise assessment of the C allocation in forest was made by analyzing the formation of structural C compounds (hemicelluloses and cellulose + lignins). A possible link between the variability of these allocations and climate was studied. The corresponding efficiencies were then calculated monthly in order to have a better idea of the sustainable C storage in this ecosystem. A comparison with a grassland in term of aBPE was then realized in order to analyze the adaptation capacity of each ecosystem to climate change and to play a role in the mitigation of GHG. Two neighboring ecosystems located in Montiers-sur-Saulx and Osne-le-Val were equipped, as part of the Observatoire Pérenne de l’Environnement (OPE), to measure continuously the CO2 exchange between land cover and atmosphere and the micrometeorological conditions in which these exchanges happen. A regular monitoring of those ecosystems development (biomass, leaves area, senescence) was also made

Made available in DSpace on 2014-08-20T14:22:04Z (GMT). No. of bitstreams: 1 tese_moacir_silva_rocha.pdf: 11149179 bytes, checksum: e3b2cd08e4d3981b82037c3e46190f2d (MD5) Previous issue date: 2006-03-02 / The peach crop in Brazil is spread from Rio Grande do Sul to Minas Gerais states. It has adapted to different environmental conditions, being cultivated in temperate and sub-tropical zones, since it develops in areas with latitudes between 30º S and 45º N. In Rio Grande do Sul, the regions that are outstanding on peach production are: Pelotas; Porto Alegre; and Serra Gaúcha. In the Serra Gaúcha besides peaches for fresh market, are also grown vine grapes and apples. In Porto Alegre, There are peach and plum productions supplying the local market. In Pelotas, most of the peaches produced are for the local industry. However, the canning peaches produced in Pelotas, has worsen the quality and lowered productivity in the last years due to the very variable winter temperature, low chilling hours and severe draught during summer and fall seasons. A way that may contribute for production regularity and to overcome damaging abiotic factors is the right choice of the rootstock. The objectives for this study were: a) to evaluate the agronomical behavior of cultivar Chimarrita on the rootstocks Aldrighi, Capdeboscq, GF305, Okinawa and Tsukuba 1; b) to evaluate the agronomical and phonological behavior of peach trees cultivar Granada on the rootstocks cvs. Aldrighi, Capdeboscq, and Okinawa, originated from both, seeds and air layering. It were observed that the trees of cultivar Chimarrita: on either rootstocks Capdeboscq or Okinawa had greater size and vigor; on Okinawa had higher fruit production, whereas on Capdeboscq had larger fruits, and delayed leaf fall, and had later bloom; the trees cultivar Granada independent of the rootstock cultivar had earlier fruit ripening as that on the same rootstock cultivars, originated from seeds (seedlings). Regarding to cultivar Granada, the trees on Capdeboscq seedling were of larger size, whereas those on Okinawa produced more fruits in the first bearing season. In general, the Granada trees on rootstocks originated from air layering had earlier harvesting, independent of the rootstock cultivar. / O pessegueiro é uma espécie cultivada desde o Rio Grande do Sul até o Estado sul da Bahia, adaptando-se às diferentes condições ambientais, sendo cultivada em zonas temperadas e subtropicais. Esta cultura se desenvolve em regiões com latitudes entre 32º S e 45º N. Dentre as regiões produtoras do Estado do Rio Grande do Sul têm-se destacado as regiões de Pelotas, Porto Alegre e da Serra gaúcha. Na região da Serra Gaúcha cultiva-se a videira principalmente para a industrialização de vinhos e derivados: a macieira destinada para o mercado interno e exportação e o pêssego mesa. Na grande Porto Alegre, a produção de pêssego de mesa e ameixa é destinada aos mercados locais. Na região de Pelotas, a mais de cinqüenta anos, a cultura do pessegueiro tem se direcionado à produção de pêssegos para atender a indústria regional. Pela falta de regularidade da temperatura e de chuvas nos últimos anos, principalmente no período que antecede a floração, entre o final do outono e início inverno, tem-se observado floração e brotação desuni forme, baixa qualidade das frutas e a baixa produtividade de pêssego na Região de Pelotas. Os programas de melhoramento genético do pessegueiro tem-se concentrado no desenvolvimento de variedades copa e deixado à questão do porta-enxerto a segundo plano. A escolha dos porta-enxerto pode contribuir para a regularidade da produção e para superação de fatores abióticos. Desta forma, o presente trabalho teve como objetivos: a) avaliar o desenvolvimento vegetativo, peso médio das frutas, eficiência produtiva, sólidos solúveis totais (SST), firmeza de polpa e coloração das frutas da cultivar Chimarrita enxertada nos porta-enxerto Aldrighi , Capdeboscq , GF305 , Okinawa e Tsukuba 1 ; b) avaliar a época da queda das folhas, época de brotação, período de floração, frutificação efetiva e período de colheita de pêssego da cultivar Chimarrita enxertada em cinco diferentes porta-enxerto; c) avaliar o desenvolvimento vegetativo da cultivar Granada enxertada em três diferentes porta-enxerto ( Adrighi , Capdeboscq e Okinawa ) obtidos por alporquia e por sementes; e d) avaliar a época de queda das folhas, início de brotação, período de floração, densidade floral, frutificação efetiva, início da colheita, intervalo de maturação e período de colheita das frutas da cultivar Granada enxertadas em três porta-enxerto obtidos por sementes e alporquia. Os resultados obtidos nos quatro experimentos permitem concluir que: a) o porta-enxerto Capdeboscq e Okinawa induziram maior desenvolvimento vegetativo na cultivar Chimarrita. O porta-enxerto Okinawa induziu maior rendimento produtivo na cultivar Chiamarrita, enquanto que Capdeboscq apresentou frutas de maior tamanho. (O porta-enxerto GF305 induziu o menor desenvolvimento vegetativo e mais baixa produtividade na cultivar e o porta-enxerto Tsukuba 1 proporcionou frutas de melhor coloração em Chimarrita nas condições em que foi instalado experimento b) Os porta-enxerto Capdeboscq e Okinawa prolongaram a permanência de folhas e o início de brotação mais tardia na cultivar Chimarrita. O porta-enxerto Okinawa retardou a plena floração e obteve a maior eficiência produtiva da cultivar Chimarrita no ano de 2005, enquanto que os porta-enxerto Aldrighi , GF305 e Okinawa anteciparam o iníncio da colheita das frutas da cultivar Chimarrita; c) O porta-enxerto Capdeboscq obtido de semente proporcionou maior crescimento vegetativo na cultivar Granada, enquanto que o Okinawa teve a maior produtividade no primeiro ano de colheita de pêssegos. Os porta-enxerto Capdeboscq e Okinawa apresentaram a melhor resposta no retardamento da queda das folhas; d) Os porta-enxerto obtidos por alporquia antecipou a colheita, com exceção de Aldrigui quando comparado aos obtidos de sementes. portaenxerto obtidos por alporquia mostrou melhor resposta na relação entre a floral e a frutificação efetiva em relação aos porta-enxerto de sementes.