Early selection of resilient progenies to seed yield in soybean populations

Seleção precoce de progênies resilientes para produtividade de sementes em populações de soja

ABSTRACT:

This study carried out early selection of soybean progenies that are productive and resilient to environmental conditions. The experiment took place at the Genetic Breeding Program of UNIJUI (University of the Northwest of the State of Rio Grande do Sul), located in Ijuí - RS, Brazil. The experiment used augmented blocks design with interim checks. The regular treatments correspond to 24 soybean F₂ populations and the common treatments were 18 commercial checks, arranged in four replications. At full physiological maturity, in each experimental unit, five plants were randomly collected to obtain seed weight per plant (SWP, g). The Jinks and Pooni methodology was used to calculate the probability of extracting superior lineages from the evaluated populations. The best control and promising cultivars to compose the parent bank are BMX FORÇA RR, FUNDACEP 66 RR and TMG 7062 IPRO. Jinks and Pooni’s methodology identified populations IRC₀₀₁, IRC₀₀₂, IRC₀₁₇, IRC₀₁₉, IRC₀₂₈, IRC₀₃₀, IRC₀₃₂, IRC₀₃₃, IRC₀₃₅, IRC₀₃₆, IRC₀₃₉ and IRC₀₄₀ as having high potential for extraction of superior lineages.

Key words:
Glycine max; genetic parameters; Jinks and Pooni method; plant breeding