Inter-relationship and path coefficient analysis in vegetable soybean (Glycine max L. Merr.)
1996
Shahidul Islam, MD. | Khan, Sharmin (Bangladesh Agricultural Research Institute. Horticulture Research Centre)
Study of the variability, some genetic characters, inter-relationship and path coefficient between yield and nine important characters of twenty exotic vegetable soybean genotypes were conducted to select the best parents for undertaking a breeding programme. The genotypes exhibited a wide range of variability for all the characters studied. The characters were also found to be highly heritable. High genetic advance was observed for number of leaves per plant, plant height, green pod yield and number of branches per plant. Green pod yield had high positive genotypic and phenotypic correlaion with plant height, number of leaves and branches per plant, 100 green seed weight, number of seeds per pods, number of pods per plant and 100 green pod weight. Path coefficient analysis was used to reveal the true nature of cause-and-effect relationships between all parameters with green pod yield, and 100 green seed weight, number of pods per plant, number of branches per plant and plant height directly affected the yield. The results suggested that for increasing yield, selection should be based on the tallest plant bearing more pods of larger weight.
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