Seed Filling
Mostrando 1-12 de 36 artigos, teses e dissertações.
-
1. Source-sink relationships in two soybean cultivars with indeterminate growth under water deficit
Abstract Water deficit is a major factor limiting crop yield in rainfed areas. We hypothesized that under water deficit the decrease of photosynthetic production stimulates: carbohydrate remobilization from leaves, stems and roots to reproductive organs; and decreasing flowering intensity and pod development. The present work aims to study the effect of wate
Bragantia. Publicado em: 2018-03
-
2. Índices de nitrogênio na planta e produção de batata-semente básica influenciados pelo parcelamento do fertilizante nitrogenado / Nitrogen plant index and production of basic seed potatoes influenced by the subdivision of the nitrogen fertilizer
This study aimed to evaluate the effect of dose and mode of division of the nitrogen fertilizer on plant characteristics, in the potato reference leaf and production in three seasons of the crop cycle and the production of tubers at harvest. Additionally it was aimed to select among the characteristics evaluated, possible indexes for the status of plant nitr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/07/2011
-
3. Acúmulo de matéria seca em híbridos de milho sob diferentes relações entre fonte e dreno.
Pouca ênfase tem sido dada à caracterização das diferenças fenológicas e fisiológicas existentes entre híbridos de milho de ciclos contrastantes na fase de enchimento dos grãos. Este trabalho foi conduzido com o objetivo de estudar os efeitos da densidade de semeadura e da desfolha sobre o acúmulo de matéria seca após a floração de híbridos co
Pesquisa Agropecuária Brasileira. Publicado em: 2011
-
4. Crescimento e desenvolvimento de milho: acumulo de massa seca do grao.
O objetivo deste trabalho foi estudar o efeito de diferentes épocas de plantio na taxa e na duração do período de enchimento dos grãos, e de que modo esses fatores determinam o peso final dos grãos de híbridos do milho (Zea mays L.). Três experimentos foram instalados no campo, nos anos de 1994-1995 a 1996-1997, com os híbridos comerciais C-901, XL-
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
-
5. Adubação nitrogenada suplementar tardia em soja cultivada em latossolos do Cerrado.
O objetivo deste trabalho foi avaliar se a adubação nitrogenada, nos estádios de pré-florescimento (R1) e início do enchimento de grãos (R5), interfere na produtividade e na nodulação da soja. O estudo foi realizado por sete anos, em Latossolo Vermelho-Amarelo argiloso e, por quatro anos, em Latossolo Vermelho argiloso, ambos com populações estabe
Pesquisa Agropecuária Brasileira. Publicado em: 2011
-
6. SPATIAL AND TEMPORAL DISTRIBUTION OF SOYBEAN STINK BUG AND BEHAVIOR OF Piezodorus guildinii (WESTWOOD, 1837) (HEMIPTERA: PENTATOMIDAE) ON SOYBEAN (Glycine max (L.) MERRILL) ON DAY TIME / DISTRIBUIÇÃO ESPACIAL E TEMPORAL DE PERCEVEJOS DA SOJA E COMPORTAMENTO DE Piezodorus guildinii (WESTWOOD, 1837) (HEMIPTERA: PENTATOMIDAE) NA SOJA (Glycine max (L.) MERRILL) AO LONGO DO DIA
From december 2006 to april 2008 was conducted a experiment at Universidade Federal de Santa Maria, Santa Maria, RS, Brasil, with objective to verify spatial and temporal distribution of soybean stink bug, with georeferenced surveying. The samplings was accomplished in area of 6,64 hectares of soybean (Glycine max (L.) Merrill), it was divided in a sample gr
Publicado em: 2009
-
7. Regulação da biossíntese de ácidos graxos insaturados durante a ontogenia de sementes de soja / Regulation of the unsaturated fatty acid biosynthesis during the ontogeny of soybean seeds
The fatty acid composition of soybean seeds has a direct impact on its oxidative stability. High levels of polyunsaturated fatty acids such as linoleic and linolenic acids make the oil more susceptible to hydrolytic and oxidative degradation leading to the formation of volatile compounds which alter the quality and flavor of foods. For this reason, there is
Publicado em: 2008
-
8. Combining ability analysis for grain filling duration and yield traits in spring wheat (Triticum aestivum L. em. Thell.)
A diallel analysis of wheat (Triticum aestivum L. em. Thell) parents (n = 11) and their F1 (n = 55) and F2 (n = 55) offspring was carried out for the following four traits: grain filling duration (GFD), GFD for growing degree days (GDD), 1000 seed weight and seed yield per plant. Analysis of variance for general combining ability (GCA) and specific combining
Genetics and Molecular Biology. Publicado em: 2007-03
-
9. INFLUÊNCIA DA APLICAÇÃO DE FERTILIZANTES E FUNGICIDA SOBRE O ENCHIMENTO DE GRÃOS E O DESEMPENHO AGRONÔMICO DO ARROZ IRRIGADO / EFFECT OF FERTILIZERS AND FUNGICIDE APPLICATION ON GRAINS FILLING AND ON RICE CULTURE PERFORMACE
Increasing green leaf duration during grain filling in rice, using management practices to enhance plant nutrition and health, can increase grain yield. To test this hypothesis, two experiments were conducted in 2005/06. The first experiment with the objectives of evaluating the effects of nitrogen (N) and fungicide application at booting stage on 1) the gre
Publicado em: 2007
-
10. Metabolismo do nitrogênio e estado nutricional do cafeeiro (Coffea arabica) / Nitrate reductase and glutamine synthetase activity during coffee plant reproduction
The aim of this work was to evaluate the nitrate reductase (NR) and glutamine synthetase (GS) activity, total soluble protein content (PTS) in coffee leaves during the fruits development in field conditions. The study was carried out in ESALQ/USP (University of São Paulo), Piracicaba, São Paulo, Brazil in a Red Nitosol eutrofic. The experimental design was
Publicado em: 2007
-
11. Effect of Mo application in cowpea (Vigna unguiculata (L.) Walp.) growth at field conditions. / Efeito da aplicação de molibdênio em caupi (Vigna unguiculata (L.) Walp.) em condições de campo
Two experiments were carried out at field conditions in the Department de Fitotecnia UFRRJ with the aims of the study the effect of molybdenum in cowpea (Vigna unguiculata (L.) Walp.). The seeds from the cultivar CNCx 409-11F-P2 were used with a plant population of 200.000 plants.ha-1. The first experiment was arranged in a factorial block design with 4 repl
Publicado em: 2005
-
12. ProduÃÃo de FeijÃo Caupi (Vigna unguiculata (L.) Walp)AtravÃs da InfiltraÃÃo Subsuperficial de Esgoto DomÃstico em Solo Arenoso. / COWPEA BEANS PRODUCTION (Vigna unguiculata (L.) Walp), THROUGH THE SUB-SUPERFICIAL INFILTRATION OF DOMESTIC SEWAGE INTO SANDY SOIL
The production of cowpea beans (Vigna unguiculata (L.) Walp.) was evaluated in a real scale in this research project, by using the disposal of domestic sewage into the soil through the sub-superficial infiltration. The research was carried out during two periods. The first one was in the rainy season from January to April, and the second one in the dry seaso
Publicado em: 2005