Flower Abortion
Mostrando 1-12 de 14 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. Chilling privation during dormancy period and carbohydrate mobilization in Japanese pear trees
The flower bud abortion is one of the main problems that limit commercial pear (Pyrus pyrifolia) production in the southern region of Brazil. Insufficient chilling during the dormancy period is known as the main factor of this problem. One of the hypotheses to explain this problem is that the starch mobilization and carbohydrate fluxes to the buds are impede
Scientia Agricola. Publicado em: 2011-08
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3. Potencial de rendimento da soja em razao da disponibilidade de fosforo no solo e dos espacamentos.
O objetivo deste trabalho foi avaliar o potencial produtivo de graos da soja nos estadios fenologicos R2 (florescimento), R5 (inicio de enchimento de graos) e R8 (maturacao). O experimento foi conduzido durante o ano agricola 1994/95 na EEA/UFRGS, Eldorado do Sul, RS, em solo Podzolico Vermelho-Escuro (Paleudult). O delineamento utilizado foi o de blocos cas
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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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
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2010
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5. 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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6. Avaliação biológica de estruturas florais em macieira e sua relação com a qualidade do fruto
The apple tree is characterized by the different floral structures. Several researches show a relationship between the production and fruit quality and the original fruiting structure. The aim of this study was to evaluate the relationship between the floral structure and the fruit quality in the cultivars Gala, Fuji and Daiane in the mild climatic condition
Publicado em: 2008
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7. Embriologia de Miconia albicans (Sw.) Triana (Melastomataceae), especie agamospermica / Embriology of Miconia albicans (Sw.) (Melastomataceae), agamospermous species
Miconia albicans (Melastomataceae) is a species with diplosporic obligate agamospermy and no pollen viability in ?Cerrado? and Atlantic Forest vegetations. The sterility of pollen grains wasn?t restricted to one developmental stage and the major abnormality of the cells from pre-anthesis flower anthers was the deformation of the reproductive cell wall, mainl
Publicado em: 2007
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8. SUBSTRATES FOR CULTIVATION OF COMMON BEAN AND TOLERANCE TO HIGH AIR TEMPERATURE DURING THE REPRODUCTIVE PHASE / Substratos para cultivo de feijão e tolerância a alta temperatura do ar no período reprodutivo
A cultura do feijão tem sua produtividade afetada em condições de alta temperatura do ar durante o período reprodutivo. A avaliação dos danos causados as estruturas reprodutivas são melhor realizadas em câmara controlada (fitotron), com controle de temperatura e de umidade. Sendo assim, foram objetivos desse trabalho: (1) identificar o substrato mais
Publicado em: 2006
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9. O genero Dahlstedtia Malme : embriologia, sistema reprodutivo e biossistematica
Flowers, fruits and seed abortion was studied in two Brazilian species: Dahlstedtia pinnata e D. pentaphy/la (Leguminosae, Papilionoideae). Such a study was developed through investigations of: 1. floral development, microsporogenesis, ovule and early seed development following open, self- and cross-pollination, in order to compare the results to other papil
Publicado em: 2001
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10. Differential regulation of symmetry genes and the evolution of floral morphologies
Shifts in flower symmetry have occurred frequently during the diversification of angiosperms, and it is thought that such shifts play important roles in plant–pollinator interactions. In the model developmental system Antirrhinum majus (snapdragon), the closely related genes CYCLOIDEA (CYC) and DICHOTOMA (DICH) are needed for the development of zygomorphic
National Academy of Sciences.
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11. Bumblebee preference for symmetrical flowers.
Fluctuating asymmetry, which represents small random deviations from otherwise bilateral symmetry, is a measure of the phenotypic quality of individuals indicating the ability of controlled development under given environmental and genetic conditions. I tested whether floral symmetry reliably reflects phenotypic quality measured in terms of pollinator reward
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12. Influence of Timing and Number of Consecutive Inductive Photoperiodic Cycles on the Flowering of Lemna12
Requirements for flowering of the short day plant Lemna perpusilla Torr. strain 6746 can be studied by interposition of varying numbers of consecutive short days during 7 days of continuous light. A single inductive cycle can cause the formation of few flowers if it comes during the middle of a 7-day period of continuous light. Three inductive cycles cause 3