Ovule Culture
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Improving reproductive efficiency of chickpea by foliar application of zinc
Zinc deficiency is not only the cause of low productivity of crops, but it also results in low zinc content in seeds, which leads to poor dietary zinc intake. To study the effect of zinc foliar application on improving plant yield and seed zinc content for human consumption, chickpea plants were raised in refined sand culture with deficient (0.2 µM) and suf
Braz. J. Plant Physiol.. Publicado em: 2012-09
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2. Metodo de obtencao de hibridos interespecificos entre Lycopersicon esculentum e L. peruvianum.
A transferência de genes da espécie silvestre Lycopersicon peruvianum para a espécie L. esculentum por processo convencional de hibridação é limitada por incompatibilidade. O objetivo deste trabalho foi desenvolver um método de obtenção de híbridos entre essas duas espécies, mediante a técnica de cultura de óvulos, tendo em vista o interesse em
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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3. Impacto e fatores determinantes de pragas em Phaseolus vulgaris / Impact and determinants factors of pests attack in Phaseolus vulgaris
The aim of this work were to determine the critical yield components and key factors of yield losses on common bean (Phaseolus vulgaris) and identify the factors that determine pest attack in this culture. The bean crops was cultivated in three growing seasons, the spring-summer, summer-autumn and winter-spring arranged in two planting system, no-tillage and
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2010
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4. Impacto e fatores determinantes de pragas em Phaseolus vulgaris / Impact and determinants factors of pests attack in Phaseolus vulgaris
The aim of this work were to determine the critical yield components and key factors of yield losses on common bean (Phaseolus vulgaris) and identify the factors that determine pest attack in this culture. The bean crops was cultivated in three growing seasons, the spring-summer, summer-autumn and winter-spring arranged in two planting system, no-tillage and
Publicado em: 2010
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5. Temperature-dependent Response to Indoleacetic Acid Is Altered by NH4+ in Cultured Cotton Ovules 1
Unfertilized cotton ovules, cultured in vitro, produced fiber in response to indoleacetic acid (IAA) and/or gibberellic acid (GA3). Of the two hormones, IAA produced the greater amount of fiber per ovule, and the effect of both hormones applied simultaneously was approximately additive. Depending upon in vitro culture temperature, a variable number of unfert
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6. Developmental and environmental induction of Lea and LeaA mRNAs and the postabscission program during embryo culture.
The major programs of gene expression during late embryogenesis are the muturation or reserve accumulation program and, after ovule abscission, the postabscission program that is composed largely of Lea and LeaA mRNAs that probably encode desiccation protectants. There are diverse opinions about the developmental regulators of these programs. Several candida
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7. Guidance in vitro of the pollen tube to the naked embryo sac of torenia fournieri
The precise guidance of the pollen tube to the embryo sac is critical to the successful sexual reproduction of flowering plants. We demonstrate here the guidance of the pollen tube to the embryo sac in vitro by using the naked embryo sac of Torenia fournieri, which protrudes from the micropyle of the ovule. We developed a medium for culture of both the ovule
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8. Directional Guidance of Nicotiana alata Pollen Tubes in Vitro and on the Stigma1
Pollen tubes navigate the route from stigma to ovule with great accuracy, but the cues that guide them along this route are not known. We reproduced the environment on the stigma of Nicotiana alata by immersing pollen in stigma exudate or oil close to an interface with an aqueous medium. The growth of pollen in this culture system mimicked growth on sti
American Society of Plant Physiologists.
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9. Changes in Soybean Fruit Ca2+ (Sr2+) and K+ (Rb+) Transport Ability during Development.
Mineral uptake by soybean (Glycine max [L.] Merrill) seeds during development can significantly affect seed quality and value. Little is known about seed mineral transport mechanisms and control processes, although it is clear that each mineral displays a characteristic accumulation pattern. Ion-specific accumulation patterns could result from changes in sou