Panicle Weight
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Quantitative and qualitative damages of Oebalus poecilus on irrigated rice in southern Brazil
ABSTRACT Oebalus poecilus is one of the most important pests of irrigated rice in Brazil. However, the impact of this species on the cultivar IRGA 424 RI, which is the most used, is unknown. Hence, the objective of this work is to evaluate the damage caused by O. poecilus on cv IRGA 424 RI. Panicles of this cultivar were infested for seven days at the R5 sta
Rev. Ceres. Publicado em: 2020-04
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2. Phenotypic variance of black oat growing in crop seasons reveals genetic effects predominance
Abstract: This work aimed to determine variance components and genetic parameters, as well as phenotypic, genetic and environmental correlations among black oat (Avena strigosa) families grown in different crop season. Seventy-six black oat families and three controls (BRS Madrugada, BRS Centauro, BRS 139 Neblina) were evaluated in two crop seasons (2016 and
An. Acad. Bras. Ciênc.. Publicado em: 23/09/2019
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3. Estimates of genetic parameters between and within black oat populations
ABSTRACT The aims of this study were to characterize black oat populations by estimating between- and within-populations variance components and genetic parameters, as well as to distinguish the populations using multivariable statistics. The experiment was carried out in randomized blocks design with three repetitions, with 14 black oat populations collecte
Bragantia. Publicado em: 11/02/2019
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4. Relationships of rice yield and quality based on genotype by trait (GT) biplot
ABSTRACT An experiment was conducted to examine the influencing characters on rice by using 64 rice genotypes, including four local landraces, four released cultivars and 56 mutant lines (M5) derived from these genotypes, with application of the genotype by trait (GT) biplot methodology. The first two principal components (PC1 and PC2) accounted for 46.6% of
An. Acad. Bras. Ciênc.. Publicado em: 2018-03
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5. Rice grain resistance to brown spot and yield are increased by silicon
Brown spot, caused by Bipolaris oryzae, is one of the most important diseases of rice and can cause a reduction in yield and grain quality. The effect of silicon (Si) on the resistance of rice grains to brown spot was investigated. Plants from cv. Oochikara and its mutant, defective in the Lsi1 transporter (lsi1 mutant), were grown in hydroponic culture eith
Trop. plant pathol.. Publicado em: 31/01/2014
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6. Silicon reduces brown spot severity and grain discoloration on several rice genotypes
This study aimed to investigate the effect of silicon (Si) on the reduction of brown spot severity (BSS), caused by Bipolaris oryzae, and grain discoloration in several rice genotypes. An experiment was conducted in a greenhouse where eight genotypes were evaluated for their response to Si rates and decrease on BSS. The relationship between Si rates and BSS
Trop. plant pathol.. Publicado em: 2012-12
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7. Uso de nitrogênio no cultivo de arroz irrigado e seus efeitos no solo, na planta e na emissão de óxido nitroso / Use of nitrogen in the cultivation of rice and its effects on soil, lant and nitrous oxide emission
In wetland soils are countless electrochemical changes, among the most influenced by anaerobic conditions is nitrogen. The rice crop also determine changes in the process, either by the nutrient uptake or by changes in the rhizosphere. The nitrogen can guarantee high yields of rice, however, due to the inadequate use of nitrogen can have nitrous oxide, which
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2011
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8. Cultivar response to fungicide application in relation to rice blast control, productivity and sustainability.
Four field trials were conducted, from 1995 to 1997, with the objective of studying the response of four upland cultivars to foliar fungicide application in relation to panicle blast control, grain yield and sustainability. Differential disease control and yield response of cultivars to fungicide treatment were obtained. Losses in grain yield of cultivars IA
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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9. Differential vegetative and reproductive performances among fifteen guinea grass hybrids.
The main scope of this work was to detect (Panicum maximum Jacq.) genotype differences as to morphoagronomic and seed quality indices, and to establish character correlations useful for determining vegetative and reproductive trends. Besides the flowering cycle, eight phenological and two seed quality traits were scored in a greenhouse randomized complete bl
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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10. Diversidade genética em cultivares de arroz.
RESUMO: O objetivo deste trabalho foi estimar a diversidade genética das cultivares de arroz mais utilizadas em cultivo no período de 1950 a 2001. Foram conduzidos dois experimentos de campo, nas localidades denominadas Aeroporto e Agronomia, ambas pertencentes à Universidade Federal de Viçosa, em Viçosa, MG. Os experimentos foram conduzidos no delineam
Planaltina. Publicado em: 2011
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11. Variabilidade fenotipica de diferentes caracteres da panicula em aveia (Avena sativa L.).
Este trabalho teve como objetivo determinar a variabiliade fenotipica de caracteres de paniculas das variedades de aveia recomendadas para o Sul do Brasil com e sem aplicacao de fungicidas. O experimento foi realizado no campo, e cada parcela foi constituida de quatro linhas de 5m de comprimento com espacos, entre si, de 0,20m. Foram coletadas cinco panicula
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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12. Growth components and zinc recovery efficiency of upland rice genotypes.
The objective of this work was to evaluate Zn use efficiency by upland rice genotypes. The experiment was carried out in a greenhouse, with ten upland rice genotypes grown on an Oxisol (Typic Hapludox) with no application, and with application of 10 mg kg-1 Zn, applied as zinc sulfate. Shoot dry weight, grain yield, Zn harvest index, Zn concentration in shoo
Pesquisa Agropecuária Brasileira. Publicado em: 2011