Call number: LD2668 .T4 1979 A43 / Master of Science

Typescript. / Digitized by Kansas Correctional Industries

This investigation attempts to verify the identification of the anthocyanin in A. amplectens by spectral means. An attempt was also made to identify the sugars, and possibly their locations on the heterocyclic ring system, of the anthocyanins.

This paper is the result of a taxonomic study of the species of the genus Smilacina occurring naturally in North America north of Mexico. In the past it has been difficult to make satisfactory determinations of members of this genus from existing manuals, especially among western forms. West of the great plains the great diversity in environmental conditions has given rise to a diversity in form of the species that are widely distributed. Many of these forms have been given specific or varietal names recently, and as no comprehensive work on the genus has been done since most of these were published, it is hoped that this study will be generally helpful in identifying members of the group. During the preparation of this work over 2500 herbarium specimens have been examined and annotated and comparative measurements made of many of these. Specimens have been examined from all of the forty-eight states except Louisiana and Florida, also from Canada, Alaska, Mexico, Central America, and Asia. Field work has been comparatively limited.

Ethylene and carbohydrate deprivation were investigated as possible causes of bud abortion in Lilium longiflorum Thunb. Silver thiosulfate (STS) was investigated as an inhibitor of ethylene-induced abortion. Fourteen days of 92.5% irradiance reduction increased bud abortion when plants were exposed to 2.07 mM ethephon. Percent bud abortion was 39% and 60% for plants grown in full irradiance and reduced irradiance, respectively. Ethephon resulted in 54% abortion, regardless of irradiance at 4.15 mM. A 70% irradiance reduction for 14 days did not increase bud abortion when plants were treated with ethephon. STS was applied to plants at visible bud +2 weeks followed by ethephon application 2 days later. Bud abortion was reduced from 69 to 13% with 2 mM STS; the STS x ethephon interaction was significant. STS inhibited ethephon-induced bud abortion when applied at visible bud, 4 weeks prior to ethephon application; However, STS application at flower bud initiation did not prevent/reduce ethephon-induced bud abortion.

Animated color film with images of water, birds, winged humans, a man in a hooded sweatshirt, doors, the sea, a woman on a stool wearing a red scarf, marching soldiers, a gun, a knife, blood on hands, a dancing couple, a crowd of dancers, a seed, plants growing, clouds, a flying winged person, a figure playing an instrument. The images transform into each other in ever-changing sequences.

No description available.

The purpose of this thesis is to present the results of a morphological investigation of the megagametophytes of two species of Fritillaria. The author has attempted to present the data in sufficient detail to clearly picture the significant features in the histories of this gametophyte generation without unnecessary repetition. The data are presented as their chronological sequence dictates.

Orientador: Antonio Carlos de Oliveira Ferraz / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola / Made available in DSpace on 2018-08-13T08:10:41Z (GMT). No. of bitstreams: 1 Lopes_TaisdeOliveiraPelegrina_M.pdf: 516453 bytes, checksum: 060bec8c952a5097040233687ffd80c5 (MD5) Previous issue date: 2009 / Resumo: No Brasil a perda de produtos agrícolas na produção e comercialização pode chegar a 30% devido, aos danos mecânicos ocorridos, durante a colheita, o transporte e o armazenamento, resultando em matérias primas não comerciáveis. As más condições de transporte estão relacionadas a falta de capacitação na maioria dos segmentos da cadeia, ao mal estado de conservação das estradas, caminhões com suspensões inadequadas para a maioria dos produtos, motoristas mal-treinados e quebras na cadeia do frio. O setor de flores e plantas ornamentais vem apresentando destaque na economia brasileira nos últimos anos, devido ao grande volume de produção e exportação de flores de corte e vaso. Vasos de lírios são expostos ao estresse mecânico tais como vibrações durante o transporte, ocasionando danos mecânicos nos tecidos das plantas e influenciando em sua resposta fisiológica e vida útil. As embalagens que condicionam os produtos e o modo de manuseá-las também não são apropriadas para garantir a qualidade do produto. Os objetivos deste trabalho foram identificar os tipos de danos mecânicos gerados por vibração, simulando o transporte rodoviário em lírios orientais 'Muscadet' em vasos utilizando uma mesa vibratória. Foi proposto um critério de notas de aparência para avaliação dos mesmos e investigação da mudança de coloração das pétalas e botões como indicador de estádio de maturação e senêscencia com auxilio de um colorímetro. Os lírios em dois estádios de maturação, botões e flores, foram submetidos a vibração e comparados com lírios não vibrados. Foram 4 tratamentos com 30 vasos cada um, totalizando 120 vasos. Para a identificação dos danos mecânicos, foi considerado o surgimento destes logo após o ensaio de vibração, e para a elaboração do critério de notas de aparência foram considerados além dos danos, a perda de turgescência, brilho, mudança da coloração das pétalas e amarelecimento das folhas. Foi concluído neste trabalho que a vibração afetou a qualidade dos lírios de vaso e a proposta de avaliação de aparência pelo critério de notas foi satisfatória. Recomenda-se o transporte de lírios orientais em vaso no estádio botão uma vez que os danos mecânicos foram reduzidos comparados às flores abertas. / Abstract: In Brazil losses of agricultural products during production and commercialization can reach up to 30% due to mechanical damages during harvest, transportation and storage, resulting in non-commercial quality products. The inadequate conditions of transport are related to lack of awareness of most chain segments, roads in bad conditions, drivers proper training and interruption of the cold chain. The flowers and ornamental plants sectors have been important for the Brazilian economy in the last years due to the high volume of production and trade of cut and pot flowers. Pot lilies are exposed to mechanical stress such as vibration during transportation resulting in mechanical damages in plant tissues affecting the physiological response and shelf life. The packages in which the flowers are transported and how they are handled seem not appropriate to guarantee the quality of the product. The objectives of this work are to identify the types of mechanical damages generated by vibration, during road transport simulation using oriental pot lilies 'Muscadet'. A shaker was used and it was suggested a new grading criteria to judge appearance. A color change study was also performed to investigate the use of color indexes as ripeness indicator and aging. A colorimeter was used. Buds and flowers were subjected to vibration and compared to non-vibrated using 4 treatments and 20 pots per treatment. Mechanical damage was identified 24 hours after vibration. Appearance evaluation considered turgidity loss, brightness, petal color change and stem bending. Mechanical damage in the lily flowers and buds are expected to be detected together with their effect in flower blossoming and shelf life. It was concluded that vibrations do affect plant quality and that the grading scale proposed was effective in discriminating differences during storage. It is recommended to transport lily plants in the bud stage than the flower one since damage is reduced. / Mestrado / Tecnologia Pós-Colheita / Mestre em Engenharia Agrícola

Magistrantūros studijų baigiamajame darbe pateikiami lelijos (Lilium L.) morfogenezės indukcijos in vitro tyrimų duomenys. Darbo objektas: lelijų (Lilium L.) veislės ˈRed Beautyˈ, ˈWiener Blutˈ, ˈSėkmėˈ, ˈNoLimitˈ. Darbo metodai: lelijų (Lilium L.) izoliuoti eksplantai – svogūnėlių žvyneliai – auginti modifikuotoje MS maitinamojoje terpėje, kurios makro druskų koncentracija sumažinta iki 0,5 pradinio koncentracijos lygio, su skirtingais augimo reguliatorių deriniais. Vertintas mikrosvogūnėlių ir šaknų susiformavimo dažnis (%) bei mikrosvogūnėlių kiekis iš eksplanto (vnt.). Darbo rezultatai. Lelijų mikrosvogūnėlių formavimosi dažnį in vitro lemia augimo reguliatorių ir genotipo sąveika. Tos pačios lelijų veislės pasižymi skirtinga regeneracine galia, priklausomai nuo maitinamosios terpės sudėties. Iš tirtų veislių didžiausia regeneracine galia pasižymėjo veislės ˈRed Beautyˈizoliuoti eksplantai. Veislių ˈWiener Blutˈ ir ˈNo Limitˈ mikrosvogūnėlių regeneracijai in vitro maitinamąją terpę tikslinga papildyti 1,0 mg l-1 BAP + 0,3 mg l-1 2,4-D deriniu. Augimo reguliatorių derinys 2,0 mg l-1 BAP + 0,3 mg l-1 2,4-D labiausiai skatino veislės ˈRed Beautyˈ mikrosvogūnėlių susiformavimą. Veislės ˈSėkmėˈ izoliuoti eksplantai mikrosvogūnėlius formavo intensyviau augimo reguliatorių derinio 3,0 mg l-1 BAP + 0,3 mg l-1 2,4-D poveikyje. Intensyviausiai šaknis in vitro formavo veislių ˈRed Beautyˈ ir ˈWiener Blutˈ mikrosvogūnėliai. / The master work presents the results of increasing of lilies induction of morphogenesis in vitro studies. Object of the work: lilies (Lilium L.) cultivars of ˈRed Beautyˈ, ˈWiener Blutˈ, ˈSėkmėˈ, ˈNo Limitˈ. Methods of the work: Explants were cultured on the MS regeneration medium supplemented with macro salt concentration which is reduced to 0.5 of the initial concentration level, with different combinations of growth regulators. Evaluated for micro bulbs and root formation rate (%) and micro bulbs quantity of explant (units). The results of work. Lilies microbulbs formation in vitro is determined by the frequency of growth regulators and genotype interactions. The same varieties of lilies are characterized by different regenerative capacity, depending on the composition of the nutrient medium. Among investigated cultivars the highest morphogenic potention distinguished isolated explants of ˈRed Beautyˈ. For micropropagation of cultivars ˈWiener Blutˈ and ˈNo Limitˈ most suitable is medium supplement by 1,0 mg l-1 BAP + 0,3 mg l-1 2,4-D combination. Growth regulators combination 2,0 mg l-1 BAP + 0,3 mg l-1 2,4-D influenced cultivar ˈRed Beautyˈ. All isolated explants of cultivar ˈSėkmėˈ formed microbulbs on medium with 3,0 mg l-1 BAP + 0,3 mg l-1 2,4-D. The most intensive roots in vitro formed microbulbs varieties of ˈRed Beautyˈ and ˈWiener Blutˈ.