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Studies on heterosis and combining ability of yield in bitter gourd (Momordica charantica L.)

LIU Zheng guo (Agric. Colloge,Guangxi Univ.,Nanning 530005,China)  
Eight inbred lines of green bitter gourd were selected to design an experiment in Grffings diallel mating schemeⅡ, heterosis and combining ability effect of bitter gourd yield were studiedThe results showed as follows: Twentysix of 28 hybrids exhibited positive heterosis over mid-parent,twenty-three exhibited positive heterosis superior parent,twerty-two had higher yield than CK;in 8 parents tested,general combining ability effect of 4 parents showed positive effect,other4 parents showed negative effect,the value of general combining ability effect of B parent was significantly higher than other parents; spcific combining ability effect of 21 hybrids between mother and father exhibited positive effect,the hybrid E×H(215)had the highest value of effect,followed by B×H(151),D×E(128),A×G(123) and C×G(105)Selection and selective mating of parents of yield potential breeding in bitter gourd was discussed in this paper
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