Cotyledon
Mostrando 1-12 de 298 artigos, teses e dissertações.
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1. Ex situ initial seedling development of Hymenaea courbaril L. (Fabaceae): a crucial phase to preserve the species
RESUMO Hymenaea courbaril L. é uma importante espécie Neotropical, que aparece com baixa densidade populacional, restrita a fragmentos de florestas semidecíduas, com baixa mortalidade e baixo recrutamento. Assim, algumas questões orientaram os objetivos deste trabalho, incluindo a capacidade de sementes armazenadas para formar mudas normais. Sementes col
Hoehnea. Publicado em: 19/08/2019
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2. Micropropagation of Physalis peruviana L.
RESUMO Physalis peruviana L. (Solanaceae) é uma frutífera herbácea, que vem se consolidando no mercado em virtude de suas potencialidades nutricionais e medicinais. As limitações à sua produção são o ciclo reprodutivo curto, o acometimento dos frutos por pragas e a carência de estudos, o que justifica a busca de estratégias para a sua propagação
Pesqui. Agropecu. Trop.. Publicado em: 18/07/2019
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3. The effects of an osmoregulator, carbohydrates and polyol on maturation and germination of ‘Golden THB’ papaya somatic embryos
Abstract This study evaluated the effect of osmoregulators and carbohydrates on the maturation and germination of somatic embryos of papaya ‘Golden THB’. Cotyledon explants from papaya seedlings germinated in vitro on basal MS medium were cultured on somatic embryogenesis induction medium (IM) containing MS salts, myo-inositol, sucrose, agar and p-chloro
An. Acad. Bras. Ciênc.. Publicado em: 25/10/2018
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4. Stem conduction systems effect on the production and quality of mini tomato under organic management
ABSTRACT This research evaluated the influence of stem conduction types on the production and physicochemical characteristics of tomato fruits (hybrid Coco, mini type) under organic management. The experiment was conducted between August 2013 and January 2014. The treatments consisted of 4 different conduction systems: 2 traditional stems; 2 stems emerging f
Bragantia. Publicado em: 15/05/2017
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5. Evaluation of limonoid production in suspension cell culture of Citrus sinensis
ABSTRACTThe use of cell and plant tissue culture techniques to produce economically important active metabolites has been growing. Among these substances are total limonoid aglycones, which are produced by "pera" orange (Citrus sinensis (L.) Osbeck, Rutaceae) and have received considerable attention because of their anticancer actions. The main objective of
Rev. bras. farmacogn.. Publicado em: 2015-10
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6. Cloning and expression of embryogenesis-regulating genes in Araucaria angustifolia (Bert.) O. Kuntze (Brazilian Pine)
Angiosperm and gymnosperm plants evolved from a common ancestor about 300 million years ago. Apart from morphological and structural differences in embryogenesis and seed origin, a set of embryogenesis-regulating genes and the molecular mechanisms involved in embryo development seem to have been conserved alike in both taxa. Few studies have covered molecula
Genetics and Molecular Biology. Publicado em: 20/01/2012
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7. Viability and vigor of jamun (Syzygium cumini) seeds
Jamun (Syzygium cumini L. Skeels) (Black plum, Damson plum) fruits weigh between 2-5 g at maturity. Fresh seeds represented 20-80% of the total fruit weight; the seed coat and cotyledons contributed 6% and 94% to the total seed weight respectively, while the weight of the embryonic axis was insignificant. Only the embryonic axis stained with Tetrazolium, not
Braz. J. Bot.. Publicado em: 2012
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8. In Vitro Regeneration of Arachis Villosulicarpa Hoehne from Cotyledon Segments, Leaves and Cell Suspension.
In vitro regeneration from immature leaves and cotyledon segments of A. villosuli-carpa Hoehne was obtained on Murashige & Skoog medium (1962) plus 1.0 mg/l 1-naphthalene acetic acid (NAA) and 1.0 mg/l 6-benzylaminopurine (BAP). Cotyledon segments showed higher morphogenetic potential than immature leaves. Morphogenic calli could also be obtained from leaves
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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9. Magnesio, calcio e potassio em sementes e cotiledones de feijoeiros e sua transferencia para plantas jovens.
O presente estudo objetivou avaliar os teores de magnesio, calcio e potassio em sementes e cotiledones do feijoeiro (Phaseolus vulgaris L.cv.Carioca) e a transferencia desses minerais dos cotiledones para a planta. Para tanto, plantas de feijao foram cultivadas durante a fase de existencia dos cotiledones e irrigadas com agua desmineralizada. Foram realizada
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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10. Germination, initial growth and cotyledon protein content of bean cultivars under salinity stress.
O excesso de sais no sistema radicular inibe a absorção de água, absorção de nutrientes e pode resultar em toxicidade de alguns sais dissolvidos na solução do solo. Excesso de sódio trocável no solo pode destruir a estrutura do solo a um ponto em que a penetração de água e a aeração das raízes se tornam impossível. Além disso, o sódio é t�
Revista Brasileira de Sementes. Publicado em: 2011
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11. Ciclo de vida, estrutura foliar e variações morfoanatômicas influenciadas por diferenças ambientais para Victoria amazonica (POEPP.) J.C. Sowerby (Nymphaeaceae) na Amazônia Central
The Amazon floodplains are specific ecosystems with high biodiversity and endemism, divided in varzeas, white fertile waters, and Igapos with poor and acid waters, black or clear, and mixed waters between the two typologies. This study aimed to characterize morphologically and anatomically leaf structure, germination and life cycle of Victoria amazonica (Poe
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/10/2010
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12. Padronização de metodologias de regeneração, via embriogênese somática e organogênese, e de aclimatização de soja (Glycine max (L.) Merrill) / Methodology standardization for regeneration via somatic embryogenesis and organogenesis and for acclimatization of soybean (Glycine max (L.) Merrill)
Different methodologies for in vitro regeneration have already been developed for several soybean cultivars. However, this species has proven to be recalcitrant to tissue culture and its in vitro morphogenetic response has been considered genotype dependent. Taking into account the need to develop reliable protocols for regeneration and acclimatization in so
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/08/2010