Improvement of vegetable soybean: genetic diversity and correlations of traits between immature and mature plants

Human consumption of vegetable soybeans is increasing, and consequently, breeding programs need to be encouraged and optimized. Therefore, there is a need to understand the relationship between the traits evaluated in the R6 (full seed) and R8 (full maturity) stages and estimate genetic divergence....

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Bibliographic Details
Published in:Crop breeding and applied biotechnology 2022, Vol.22 (1)
Main Authors: Casas-Leal, Nelson Enrique, Pereira, Fernanda Aparecida Castro, Vello, Natal Antonio
Format: Article
Language:eng ; por
Subjects:
AGRONOMY
BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Correlation
Cultivars
Genetic diversity
Genotypes
Plant breeding
Plants (botany)
Soybeans
Vegetables
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Summary:Human consumption of vegetable soybeans is increasing, and consequently, breeding programs need to be encouraged and optimized. Therefore, there is a need to understand the relationship between the traits evaluated in the R6 (full seed) and R8 (full maturity) stages and estimate genetic divergence. At two sites and two crop seasons, we evaluated 42 progenies (F6 generation) from crosses between vegetable soybean genotypes and three commercial cultivars. In general, we found significant coincident correlations between environments. Positive and significant correlations between pod width (PWR6) and hundredseed weight (HSW) and between PWR6 and hundred-pod weight (HPW) suggest the possibility of replacing the labor-intensive process of obtaining HSW and HPW by estimating PWR6, which is faster and easier to apply. The unweighted pair-group method arithmetic average analysis allocated soybean genotypes into six major clusters. Furthermore, information from the present work may guide practical actions in breeding programs.
ISSN:1518-7853
1984-7033
1984-7033
DOI:10.1590/1984-70332022v22n1a08