Inter-trait Association and Genetic Variability Assessment in Snapmelon (Cucumis melo var. momordica)

摘要

Genetic variability, heritability (h2), genetic advance, character association and path analysis were carried out in 74 accessions of snapmelon (Cucumis melo var. momordica) for 12 quantitative characters. High phenotypic (PCV) and genotypic (GC V) coefficient of variation was observed for fruit weight and yield per plant. High heritability along with high expected genetic advance was recorded for polar and equatorial circumference of fruit. Yield had positive and significant correlation with fruit weight, polar and equatorial circumference of fruit at both phenotypic and genotypic level and with days to first female flower anthesis at genotypic level. Fruit weight, polar and equatorial circumference of fruit had positive correlation coefficient among themselves. Higher and positive direct effect on yield was exerted by number of fruits per plant followed by fruit weight, polar and equatorial circumference of fruit, days to first male flower anthesis and node at which first female flower appears. Besides, direct selection for fruit weight, indirect selection through polar and equatorial circumference of fruit could be considered for further improvement of yield.