21 research outputs found
Inheritance of emergence time and seedling growth at low temperatures in four lines of maize
Role of Tractors, Tubewells and Plant Breeding in Increasing Cropping Intensity in Pakistan's Punjab
Molecular characterization of vernalization and photoperiod genes in wheat varieties from different agro-climatic zones of India
Accounting for Variability in the Detection and Use of Markers for Simple and Complex Traits
Combining ability analyses of stability parameters and forage yield in smooth bromegrass
Implicações da aplicação de fungicida na adaptabilidade e estabilidade de rendimento de grãos em aveia branca Implications of fungicide application to adaptability and stability of grain yield in oat
Vinte genĂłtipos de aveia (Avena sativa L.), testados em 13 ambientes, foram submetidos Ă análise de adaptabilidade e estabilidade com o objetivo de avaliar o efeito da utilização de fungicida nestes parâmetros, atravĂ©s do modelo de regressĂŁo segmentado de CRUZ et al. (1989). A aplicação de fungicida afetou os parâmetros de adaptabilidade (b1), responsividade (b1+b2) e estabilidade (<img border=0 id="_x0000_i1026" src="../../../../img/revistas/cr/v34n3/a07img01.jpg">), indicando que as estimativas devam ser realizadas em separado nos ambientes com e sem fungicida. AlĂ©m disso, o uso de fungicida proporcionou efeito favorável sobre a estabilidade de rendimento de grĂŁos, sendo que quatro genĂłtipos testados mostraram ser estáveis (UPF 19, UPF 20, OR-3 e OR-4), enquanto que na ausĂŞncia de fungicida todos os genĂłtipos revelaram instabilidade de rendimento de grĂŁos. Entretanto, nenhuma cultivar testada evidenciou caracterĂsticas de genĂłtipo ideal, conforme preconizado pelo modelo adotado.<br>Twenty oat genotypes (Avena sativa L.) tested in thirteen environments were submitted to adaptability and stability analyses aiming at evaluating the effects of fungicide utilization following the segmented regression model of CRUZ et al. (1989). Fungicide application affected the parameters of adaptability (b1), responsiveness (b1 + b²) and stability (<img border=0 id="_x0000_i1028" src="../../../../img/revistas/cr/v34n3/a07img01.jpg">) indicating that estimatives must be performed individually in environments with and without fungicide. Fungicide application had a favorable effect on the stability of grain yield, inasmuch as four of the tested genotypes were shown to be stable (UPF 19, UPF 20, OR-3 e OR-4); however, all genotypes revealed instability of grain yield in the absence of fungicide. No tested cultivar showed characteristics of the ideal genotype, as predicted by the adopted model