Genetic correlation and path analysis of common bean collected from Caceres Mato Grosso State, Brazil

Abstract

The aim of the study was to determine genetic correlations of agronomic traits and to evaluate direct and indirect effects, through path analysis, between variables analyzed with grain yield. Forty accessions of common bean, cultivated at Caceres County were evaluated, by using randomized complete blocks design with three repetitions. Coefficient magnitudes of genotypic correlations were superior to phenotypic and environmental ones for most correlations, suggesting greater influence of genetic factor than environmental factors. In order to determine the importance of direct and indirect effects, path analysis was performed, which provided greater reliability in interpretations of cause and effect between studied traits, indicating that grain yield may be explained by the effects of analyzed traits. Number of seeds per plant (0.801) and grain weight (0.641) showed higher favorable effect over grain yield, allowing its use in direct or indirect selection for grain yield in common bean.

Correlation and Path Coefficient Analysis for Seed Yield and some of its Traits in ‎Common Bean (Phaseolus vulgaris L.)‎

“…According to Ambachew et al (2015), these results show a minor environmental effect and greater importance of the genotypic factor to the trait expression, suggesting the possibility of success in indirect selection for such trait. These results agree with those obtained by Ambachew et al (2015) and Gonçalves et al (2017). In several traits, environmental correlations presented difference in value and sign, in relation to phenotypic and genotypic correlations, which indicate that different physiological processes affect the genetic and environmental variations for these traits and the environment may restrict the direct selection (Falconer, 1960).…”

“…A. AL-BALLAT AND A. A. AL-ARABY Gonçalves et al, 2017, andPanchbhaiya et al, 2017). However, there are few reports (Mohamed, 1997) on this subject in common bean under Egyptian conditions.…”

The GT biplot analysis of green bean traits

“…Therefore, 100SW, NSPl and NPP showed positive correlation with GY, PY and SWP. These results corroborate studies that assessed the correlation between these agronomic variables in different bean genotypes (GASIM et al, 2015;GONÇALVES et al, 2017).…”

Hubungan Karakter Agronomi Dan Karakteristik Fisik Biji Terhadap Hasil Biji Dan Hasil Minyak 20 Galur Jarak Kepyar (Ricinus communis L.) Perlakuan Kolkisin Generasi Ke-5

“…Secara umum korelasi genetik bernilai lebih tinggi dibandingkan korelasi fenotip yang mengindikasikan faktor lingkungan tidak dapat mendukung gen pengendali dari karakter tanaman dan ekspresi karakter lebih dipengaruhi oleh faktor genetik (Martono, 2009). Besarnya nilai korelasi genetik daripada korelasi fenotip menunjukkan bahwa komponen genetik lebih berpengaruh daripada komponen lingkungan, secara tidak langsung nilai korelasi genetik yang lebih tinggi mempermudah seleksi untuk karakter yang diinginkan, sehingga lebih menguntungkan untuk tujuan pemuliaan tanaman (Gonçalves et al, 2017).…”