Study on genetic variance and combining ability of prolificacy in baby corn
1996
Pradit Suthipong
Study on genetic variance and combining ability of prolificacy of 10 inbred lines were conducted for baby corn production. Five prolific lines and five non-prolific lines were crossed in diallel fashion resulted in 45 combinations. Hybrids were evaluated in dry and rainy seasons of 1993. Results showed that single cross hybrids obtained from prolific inbred lines that showed higher average weight of desirable baby corn ears, baby corn ears included and excluded husks, number of total harvest ears and number of desirable ears were higher than among single cross hybrids obtained from non-prolific and prolific inbred lines and non-prolific inbred lines. Genetic variance analysis of weight include husk, total ears harvested and number of desirable ears were of additive and non-additive gene actions. Characteristics of weight of desirable baby corn ears and weight of baby corn ears without husk were only of additive gene action whereas non-additive gene action showed nonsignificant importance. Performances of hybrids were significantly difference in dry and rainy seasons evaluation. The single cross hybrid CSB 21 CSB 22 from prolific inbred lines showed the weight of desirable baby corn ears of 221 kilograms per rai. Inbred lines within the prolific group showed higher GCA and the average of yield components than inbred lines within non-prolific group. The inbred line, CSB 24 showed highest tendency of combining abilities and everages. Selection of inbred lines for baby corn hybrids should consider prolificacy as an important trait in breeding program.
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