Open AccessEstimates of genetic parameters in F4 F5 soybean populations resistant to Asian soybean rust
Author(s) -
Charnai Kau,
Orlando Di Mauro Antônio,
de Santiago Silviane,
Formice Vianna Viviane,
Tadeu Mazza Revolti Lucas,
M. C. A. Marcelo
Publication year - 2014
Publication title -
african journal of agricultural research
Language(s) - English
Resource type - Journals
ISSN - 1991-637X
DOI - 10.5897/ajar2014.8538
Subject(s) - heritability , rust (programming language) , biology , point of delivery , selection (genetic algorithm) , phakopsora pachyrhizi , genotype , productivity , agronomy , horticulture , microbiology and biotechnology , gene , genetics , fungicide , macroeconomics , artificial intelligence , computer science , economics , programming language
The objective of the present study is the evaluation of genetic parameters in F4 and F5 soybean populations from two crosses, which are potentially resistant to Asian soybean rust. The genotypes were developed from the cross between parents, which were resistant and susceptible to the disease, and totaled 137 genotypes in generation F4 and 283 genotypes in F5. The experimental design was augmented blocks with two checks between the treatments. The following agronomic characters were evaluated: plant height at maturity, first pod insertion height, number of nodes and branches, agronomic value, lodging, number of pods and seeds per plant and seed production. After the genotypes were submitted to analyses of variance, heritability, and selection gains, it was observed that Cross 1 had superior progenies, which were potentially resistant to Asian soybean rust and also had good productivity.
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