“…This is due to the masking effect of a positive indirect effect of the corresponding traits acknowledged by Oyiga and Uguru 42 , the features with a negative direct effect were days to maturity, dry seed weight, and number of branches per plant. The total number of pods and fresh pods per plant had the highest indirect effect which is consistent with the findings of Misangu et al 31 , Oyiga and Uguru 42 in Bambara groundnut. Figure 1 G e notypic path coefficient diagram representing cause and effect relationships among quantitative traits and grain yield.…”
Section: Resultssupporting
confidence: 91%
“…According to Ofori 47 , and Iqbal et al 48 , days to 50% flowering and number of pods per plant are important traits in legumes, hence these traits should be prioritized for increasing seed yield in Bambara groundnut. Due to higher component compensation and uncertain climate circumstances, there was a strong positive association between hundred seed weight and yield with a minor contribution to yield (0.0357), which contradicted earlier findings by Karikari and Tabore 49 and Misangu et al 31 . However, our findings corresponded with those of Maunde et al 43 , who found a direct influence of hundred seed weight on yield (0.0883).…”
Section: Resultscontrasting
confidence: 71%
“…Misangu et al 31 , Oyiga and Uguru 42 , and Maunde et al 43 found a significant positive association and contributions of total pod number per plant and hundred seed weight. Dry pod weight per plant and number of pods per plant both contributed positively to yield in this study.…”
Section: Resultsmentioning
confidence: 93%
“…Because of their interrelation, these variables have direct and indirect effects on the pod yield and its contributing traits. Consequently, Misangu et al 31 , Oyiga and Uguru 42 ; Ofori 47 , in Bambara groundnut, Usman et al 19 in chili, and Oladosu et al 32 in rice employ path coefficient analysis effectively to investigate the direct and indirect correlations between component characteristics via the partitioning of correlation coefficients. According to the results of our path analysis, the dry pod weight had the greatest direct effect on yield kg per hectare (1.000), followed by the fresh pod weight (0.0456) and the hundred seed weight (0.0357).…”
Section: Resultsmentioning
confidence: 99%
“…Using Wright's 30 method and path coefficient analysis, the genotypic correlations were then partitioned into components of direct and indirect effects. Misangu et al 31 , Usman et al 19 , and Oladosu et al 32 developed a technique for finding path coefficients that used a matrix notation to illustrate the relationships between correlations and path coefficients. Based on two-level relationships, the traits studied were then divided into first- and second-order components.…”
In a breeding program, studies of genotypic and phenotypic relationships among agricultural crop traits are useful to design, evaluate, and develop selection criteria for desirable traits. Using path coefficient analysis, the present study was executed to estimate the phenotypic, genotypic, and environmental correlation coefficients between yield and yield-related traits and to determine the direct and indirect effects of yield-related traits on yield per plant. A total of 30 genotypes of Vigna subterranea were studied under tropical conditions at two sites over two planting seasons (considered as four environments). The experiment at each site used a randomized complete block design with three replicates. Data were collected on vegetative and yield component attributes. Based on analysis of variance, pooled results showed that there were positive and highly significant differences (p ≤ 0.01) among the 30 genotypes for all attributes studied. Highly significant and positive strong correlation at phenotypic level was observed for dry seed weight (0.856), hundred seed weight (0.754), fresh pod weight (0.789), and total pod weight (0.626) with yield in kg per hectare, while moderate positive correlations were observed for harvest cut (0.360) and days to maturity (0.356). However, a perfect positive correlation was observed for the dry weight of pods with seed yield. In contrast, days to 50% flowering (− 0.350) showed a negative significant relationship with yield per hectare. The dried pod weight attribute (1.00) had a high positive direct effect on yield. Fresh pod weight had the greatest indirect effect on yield per hectare, followed by the number of total pods by dry pod weight. As a result, dry pod weight, hundred seed weight, number of total pods, and fresh pod weight could be used as selection criteria to improve the seed yield of Bambara groundnut (Vigna subterranea).
“…This is due to the masking effect of a positive indirect effect of the corresponding traits acknowledged by Oyiga and Uguru 42 , the features with a negative direct effect were days to maturity, dry seed weight, and number of branches per plant. The total number of pods and fresh pods per plant had the highest indirect effect which is consistent with the findings of Misangu et al 31 , Oyiga and Uguru 42 in Bambara groundnut. Figure 1 G e notypic path coefficient diagram representing cause and effect relationships among quantitative traits and grain yield.…”
Section: Resultssupporting
confidence: 91%
“…According to Ofori 47 , and Iqbal et al 48 , days to 50% flowering and number of pods per plant are important traits in legumes, hence these traits should be prioritized for increasing seed yield in Bambara groundnut. Due to higher component compensation and uncertain climate circumstances, there was a strong positive association between hundred seed weight and yield with a minor contribution to yield (0.0357), which contradicted earlier findings by Karikari and Tabore 49 and Misangu et al 31 . However, our findings corresponded with those of Maunde et al 43 , who found a direct influence of hundred seed weight on yield (0.0883).…”
Section: Resultscontrasting
confidence: 71%
“…Misangu et al 31 , Oyiga and Uguru 42 , and Maunde et al 43 found a significant positive association and contributions of total pod number per plant and hundred seed weight. Dry pod weight per plant and number of pods per plant both contributed positively to yield in this study.…”
Section: Resultsmentioning
confidence: 93%
“…Because of their interrelation, these variables have direct and indirect effects on the pod yield and its contributing traits. Consequently, Misangu et al 31 , Oyiga and Uguru 42 ; Ofori 47 , in Bambara groundnut, Usman et al 19 in chili, and Oladosu et al 32 in rice employ path coefficient analysis effectively to investigate the direct and indirect correlations between component characteristics via the partitioning of correlation coefficients. According to the results of our path analysis, the dry pod weight had the greatest direct effect on yield kg per hectare (1.000), followed by the fresh pod weight (0.0456) and the hundred seed weight (0.0357).…”
Section: Resultsmentioning
confidence: 99%
“…Using Wright's 30 method and path coefficient analysis, the genotypic correlations were then partitioned into components of direct and indirect effects. Misangu et al 31 , Usman et al 19 , and Oladosu et al 32 developed a technique for finding path coefficients that used a matrix notation to illustrate the relationships between correlations and path coefficients. Based on two-level relationships, the traits studied were then divided into first- and second-order components.…”
In a breeding program, studies of genotypic and phenotypic relationships among agricultural crop traits are useful to design, evaluate, and develop selection criteria for desirable traits. Using path coefficient analysis, the present study was executed to estimate the phenotypic, genotypic, and environmental correlation coefficients between yield and yield-related traits and to determine the direct and indirect effects of yield-related traits on yield per plant. A total of 30 genotypes of Vigna subterranea were studied under tropical conditions at two sites over two planting seasons (considered as four environments). The experiment at each site used a randomized complete block design with three replicates. Data were collected on vegetative and yield component attributes. Based on analysis of variance, pooled results showed that there were positive and highly significant differences (p ≤ 0.01) among the 30 genotypes for all attributes studied. Highly significant and positive strong correlation at phenotypic level was observed for dry seed weight (0.856), hundred seed weight (0.754), fresh pod weight (0.789), and total pod weight (0.626) with yield in kg per hectare, while moderate positive correlations were observed for harvest cut (0.360) and days to maturity (0.356). However, a perfect positive correlation was observed for the dry weight of pods with seed yield. In contrast, days to 50% flowering (− 0.350) showed a negative significant relationship with yield per hectare. The dried pod weight attribute (1.00) had a high positive direct effect on yield. Fresh pod weight had the greatest indirect effect on yield per hectare, followed by the number of total pods by dry pod weight. As a result, dry pod weight, hundred seed weight, number of total pods, and fresh pod weight could be used as selection criteria to improve the seed yield of Bambara groundnut (Vigna subterranea).
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