Assessment of variability, heritability, genetic advance and determining correlation for yield and its contributing traits in sponge gourd (Luffa cylindrica Roem.) along with path analysis
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Assessment of variability, heritability, genetic advance and determining correlation for yield and its contributing traits in sponge gourd (Luffa cylindrica Roem.) along with path analysis
Abstract
Sponge gourd is an important cucurbit and its high fruit yield is the main objective of a breeder. Fruit yield is a combination of several characters. Correlation analysis indicates the extent and nature of the relationship of these traits with fruit yield and path analysis explains whether a trait affects the yield directly or indirectly. Association and path analysis were carried out for yield and yield related traits in thirteen sponge gourd lines along with estimation of variability, heritability and genetic advance. Entries were sown in Randomized complete block design at farm area of Vegetable Research Institute, Faisalabad, Pakistan, during 2017-2018. Character studied were length of fruit, fruit weight, fruit diameter, No. of fruits/plant, days to first fruit picking, days to first female flower and yield/plant. No. of fruits per plant depicted highest value of GCV% and PCV% pursued by weight of fruit and yield/plant. Fruit weight anddays to first fruit picking showed the maximum heritability plus genetic advance. No. of fruits/plant, fruit weight and length of fruit were positively and highly significantly associated with fruit yield/plant. Days to first fruit picking exhibited negative and highly significant association with fruit yield per plant and negative relationship of this attribute with fruit yield is desirable. Maximum positive direct effects on yield/plant were exerted by single fruit weight and No. of fruits per plant. Results of correlation and path analysis showed that and No. of fruits/plant and single fruit weight are the major yield contributing traits and must be selected for increasing the fruit yield/plant in sponge gourd.
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Nusrat Parveen, Saba Aleem, Muhammad Najeebullah, Rasheda Aslam, Mehvish Tahir, Etlas Amin, Amna Kanwal (2019), Assessment of variability, heritability, genetic advance and determining correlation for yield and its contributing traits in sponge gourd (Luffa cylindrica Roem.) along with path analysis; IJB, V15, N4, October, P296-302
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