Correlation and Path Coefficient Analysis for Seed Yield and Yield Related Traits in Soybean (<i>Glycine max</i> (L.)) Genotypes

Abstract

Soybean is a very interesting food crops and several production constraints are accountable for the low productivity including poor soils fertility, lack of early maturing or drought tolerant variety, lack of high yielding varieties, disease and pest. Therefore experiment was conducted to assess the extent of genetic variability and traits associations in soybean genotypes for grain yield and its related components and thereby generate information as well as identify superior genotypes for further improvement program. A total of thirty six soybean genotypes were tested using simple lattice design with two replications at Fedis during 2018 cropping season. Most of the traits showed positive correlations among themselves both at phenotypic and genotypic levels. Seed yield had highly significant and positive genotypic and phenotypic correlation with primary number of branches/plant, number of pods/plant, number of seeds/pod and plant height, indicating that simultaneous improvement of grain yields with the associated traits is favorable. Plant height exerted the highest genotypic (0.74) and phenotypic (0.54) direct effect on seed yield, and followed by hundred seeds weight and number of pods/plant showed higher genotypic direct effect on seed yield. This suggested that attention should be given for these traits mainly for direct and indirect selection for variety development.

Correlation and path analysis in black and brown seeded soybean [Glycine max (L.) Merr.] genotypes at Melko and Modio, South-Western Ethiopia

“…Highly positive genotypic correlations (P≤0.01) were identified for grain yield with plant height, number of pods per plant, number of primary branches per plant, hundred seeds weight, and harvest index. Similar results were reported by (Berhanu et al, 2021;Mili et al, 2017;Koraddi et al, 2015). The possible reasons for such a genotypic correlation may result from a pleiotropic effect or linkage of a gene governing the inheritance of these characters.…”

Characteristics contribution and similarity of F5 soybean lines resistant to cowpea mild mottle virus derived from different crossing

“…Karyawati and Puspitaningrum (2021) stated that seed yield is only directly correlated with the 100-seed weight and indirectly correlated with the number of pods filled and the number of seeds per plant. Berhanu et al (2021) reported that seed yield significantly correlated with the number of branches, nodes, seeds, and filled pods. Faot et al (2019) reported a correlation between disease scores, plant height, number of reproductive nodes, unfilled pods, seed size, and seed yield.…”

“…Seed yield ranged from 3.05 to 70.84 grams, with an average of 27.55 (Figure 1H). Berhanu et al (2021) reported that an increase in plant agronomic characteristics affects the number of seeds per plant. Several yield components, such as the number of nodes and pods, also support increasing soybean yield (Ferrari et al 2018).…”

QTL mapping and genomic selection of stem and branch diameter in soybean (Glycine max L.)

“…Complex quantitative traits in soybeans are usually interrelated (Berhanu et al, 2021) and influenced by both genetic and environmental factors (Wang et al, 2019). The QTL mapping efficiency and accuracy of quantitative traits could be largely influenced by the application in a single environment.…”