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Studies on genetic variation,correlation and path analysis in bitter gourd ( Momordica charantia L.)

LIU Zheng guo 1,2 , LONG Ming hua 2 , QIN Rong yao 2, WANG Xian yu 2 ( 1 College of Horticulture and Gardening, Hunan Agricultural University , Changsha 410128, China; 2 Agricultural College, Guangxi University , Nanning 530005, China )  
10 quality characters of 23 breeding materials of bitter gourd were researched in this experiment. The results showed that there were bigger genetic coefficients of variation and higher heritability for vitamin C,reducing sugar,organic acid,fruit tumor,fruit color,fruit thorn and bitterness;and very small genetic coefficients of variation for water contents;and small genetic coefficients of variation and lower heritability for flavor. Significant correlation was not found between 4 internal nutrient quality characters,but was found between 4 external quality characters. Less correlation was found between 2 taste quality characters and 4 nutrient quality characters,however,significant correlation was found between 2 taste quality characters and 4 external quality characters. There was some correlation between nutrient quality characters and external quality characters. It was put forward that the flavor can be improved by decreasing bitterness and organic acid and vitamin C selection can be carried out by direct selection of water contents and fruit tumor through path analysis.
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