Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 64 for “"Seed coat"”.
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The molecular basis of seed coat pigmentation in Glycine max
Seed coat color in Glycine max is determined by the classically defined I locus which controls the presence or absence, as well as the spatial distribution of anthocyanin pigments in the seed coat. Commercially used soybean cultivars have yellow seed coats due to the presence of either the I or …
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Understanding the molecular mechanism of postharvest seed coat darkening in pinto beans
… of dry beans that is affected by postharvest seed coat darkening. Bean producers and vendors encounter significant crop value loss due to the decreased consumer preference for the darker beans. Darker beans also display poor canning quality and longer cooking times. Special storage conditions …
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The embryology, seed coat, and conservation of some Kenyan species of the orchidaceae
Aspects of embryology, seed morphological features and symbiotic seed germination of the Kenyan orchid species of the subfamily Epidendroideae were examined critically in order to elucidate their development and importance in conservation. The embryology of ca. 70 species was studied by …
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Seed Germination Performance and Seed Coat Mucilage Production of Sweet Basil (Ocimum basilicum L.)
… is a warm season herb usually propagated from seeds. Establishment of basil is difficult as seed germination may be limited, particularly during field seeding at cold soil temperatures. The germination of six cultivars (\'Italian Large Leaf\', \'Italian Large Leaf\' 35X, \'Nufar\', …
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Light Transmission Properties of Lentil (Lens culinaris Medik.) Seed Coat and Effect of Light Exposure on Cotyledon Quality
… the variation in optical properties among lentil seed coat types and to determine the effect of light treatment, seed coat presence, and seed coat type on color loss in lentil cotyledon. Light transmission properties of seed coat types were obtained to find out if they differ in their …
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Catechyl-lignin tissues in Vanilla orchid and Candlenut: structure/property studies
… of lignin, catechyl (C)-lignin was found in the seed coat of vanilla orchid (Vanilla planifolia) and Melocactus cacti, and later in the nutshell of Aleurites moluccana (candlenut). This caffeyl alcohol homopolymer is the exclusive lignin in vanilla seed coat but separated in time and/or location …
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Evaluation of the antioxidant activity of extracts and flavonol glycosides isolated from the seed coats of coloured beans (Phaseolus vulgaris L.)
The seed coat of the common bean (Phaseolus vulgaris L.) can be considered an important source of flavonoids. Flavonoids are well known for their beneficial effects on health long before they were isolated as effective compounds. Dry beans are typically processed and the seed coats may be removed …
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The effect of fire and heat on germination of southeastern United States wildlife food plants with particular emphasis on the genus Cassia
… the growth of legume plants which produce seeds important as quail food. These seeds are characterized by a hard seed coat and the ability to remain dormant but viable for long periods of time. This study was conducted to determine the effect of heat on germination of seeds from several of …
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Variation in proline-rich proteins and DNA methylation patterns in soybean seed color isolines
… expression of anthocyanin pigments in soybean seed coats. Using isolines of soybean cultivars varying only at the I locus, a seed coat cell wall protein that is affected by seed coat color was identified. A cDNA library was constructed using messenger RNA isolated from immature soybean seed …
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Promotion of Value-Added Uses of Soybeans
… concerns, low-linolenic soybeans and colored seed coat soybeans were investigated for their health beneficial components, as well as their chemical and biological properties. A study of low-linolenic soybeans showed their similar antioxidant activity, total phenolics, and isoflavones to normal …
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Endogenous short interfering RNAs that silence chalcone synthase result in pigment pattern formation on soybean seed coats
… of the I locus inhibit pigmentation of the seed coat while the homozygous recessive i allele results in fully pigmented seed. Previous work showed that dominant alleles correspond to duplications of chalcone synthase (CHS) genes leading to production of CHS siRNAs which in turn degrade CHS …
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Physiological and transcriptomic responses of soybean reproductive development to global climate change
… stages of reproductive development, including seed and fruit properties, pollen germination and tube growth. Daytime elevated [O3] between 70 to 100 ppb decreased plant yield by 27%. In this analysis, elevated [O3] did not impact the number of flowers or inflorescences produced by the plants, …
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Assessing the Distribution and Impact of <I>Bean pod mottle virus</I> (BPMV) as a Re-emerging Virus, and <I>Soybean mosaic virus </I>(SMV) in Soybean Grown in Virginia
… Merrill), causing quality and yield loss due to seed coat mottling and seed weight reduction. Although BPMV has been known in Virginia since 1958 and has always been regarded as causing negligible losses, its impact is changing as BPMV incidence has increased in many soybean growing areas of …
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Seed ecophysiology and plant population ecology of Cynoglossum officinale L. and Tragopogon spp.
… Columbia, ecophysiological characteristics of seed germination in C. officinale and Tragopogon spp. and dynamics of seed and plant populations in T.pratensis were investigated. A deep innate (primary) dormancy was found in C. officinale seeds, and the seed coat of this species played an …
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Quantitative analysis of individual flue-cured tobacco seed tissues reveals Tobacco mosaic virus infection in embryos
… have been associated with contaminated seeds with the seed coat being the source of virus. Thus, TMV transmission is said to be seedborne (as opposed to true seed transmission where the embryo is infected). The objective of this study was to identify TMV concentrations in the three …
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Maternal environment affects adaptive seed and seedling traits in Elymus elymoides
… effects of climate change. However, restoration seed needs often outpace the volume of seed that can be collected from the wild, so seeds for many native plant species must be produced in agricultural fields before they are seeded in wild settings. For many of these efforts, agricultural …
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Soybean Seed Quality Studies (Scanning Electron-Microscopy, Phomopsis Spp., Alternaria Sp.)
… (1) What is the developmental sequence of the seed coat pits and micropyle? (2) What role do natural openings on the seed surface play in field pathogen infection of the seed? (3) Why do male sterile soybeans have poor seed quality? (4) What is the relationship and genetics of reproductive …
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