Agronomic performance and path analysis of roundup ready and conventional soybean from two-way crosses in the northwestern of So Paulo, Brazil | Zendy

de Sousa Leite Wallace | Zendy; Helena Unêda-Trevisoli Sandra | Zendy; Licieri Groli Eder | Zendy; Cleber Vinícius Giaretta Azevedo | Zendy; Henrique Pedroso Val Bruno | Zendy; H. Eduardo | Zendy; Mota da Silva Fabiana | Zendy; Orlando Di Mauro Antônio | Zendy

Open Access

Agronomic performance and path analysis of roundup ready and conventional soybean from two-way crosses in the northwestern of So Paulo, Brazil

Author(s) -

de Sousa Leite Wallace,

Helena Unêda-Trevisoli Sandra,

Licieri Groli Eder,

Cleber Vinícius Giaretta Azevedo,

Henrique Pedroso Val Bruno,

H. Eduardo,

Mota da Silva Fabiana,

Orlando Di Mauro Antônio

Publication year - 2016

Publication title -

african journal of agricultural research

Language(s) - English

Resource type - Journals

ISSN - 1991-637X

DOI - 10.5897/ajar2016.11700

Subject(s) - path analysis (statistics) , randomized block design , genotype , biology , horticulture , yield (engineering) , grain yield , forensic science , veterinary medicine , zoology , mathematics , medicine , gene , statistics , genetics , materials science , metallurgy

The aim of this study was to compare the agronomic performance of RR soybean genotypes with conventional soybean genotypes derived from two-way crosses and evaluate through path analysis the influence of important traits for culture on the grain yield (GY) in the Northwestern of Sao Paulo, Brazil. It was used the randomized block design with three replications. Among the analyzed RR genotypes, three genotypes has high GY, with average values over 4575.5 kg ha-1, while among the conventional, ten genotypes, and the check Conquista showed superiority for GY, with average values over 3511.4 Kg ha-1. In general, the most productive RR soybean genotypes showed higher values when compared with conventional genotypes with higher yield. However, conventional soybean showed a higher number of superior genotypes with similar behavior when compared to the RR soybean. For the group of RR soybean genotypes, all agronomic traits, except one hundred seed weight (HSW), correlated positively with GY. For the group of conventional soybean genotypes, there was no significant correlation between GY and all agronomic traits analyzed. The genotypic correlation and path analysis indicate the plant height at flowering (PHF) and plant height at maturity (PHM) as the most favorable and direct effect on GY. Key words: Glycine max, breeding, genetic correlations, productive performance, direct effect, RR soybeans.

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