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|Authors:||Ranpise, Shrimant Anna|
|Title:||HETEROSIS AND COMBINING ABILITY IN BITTER GOURD (Momordica charantia L.)|
|Publisher:||MAHATMA PHULE AGRICULTURAL UNIVERSITY RAHURI, (Dist: Ahmednagar) (MAHARASHTRA)|
|Abstract:||The investigation, " Heterosis and combining ability in bitter gourd (Momodica charantia L.)1* was carried out during 1983-84, for ten quantitative characters involving eight parents in a half diallel set. The parental lines involved were J 1. Bombay Long, 2. Washim Local, 3. C-96, 4. Hissar Selection, 5. B-113, 6. B-112, 7. Khandesh Mali and 8. Co-Long. The maximum heterosis percentage in F1 was noticed for the character yield per plant in the combination 3 x 5(93.96%) and for days to female flower in hybrid 3x7. The highest heterosis percentage for internodes number at which first female flower appeared was recorded by hybrid 6x7, for days to first fruit harvest by hybrid 4x6, for average weight of fruit by hybrid 1x4 and for length of vine by hybrid 1x6. Co-long was the best combiner for the six characters, viz. average weight of fruit, number of fruits per plant, yield per plant, diameter and flesh thickness of fruit and days to first female flower, was best for early flower production and internodes at which first female flower appeared, In F1 combinations, highest s.c.a. effects were recorded by hybrid 5 x 6 (-1.80) for days to first female flower, by hybrid 6x7 for internode number at which first female flower was produced by hybrid 1x2 for days to first fruit harvest, by hybrid 3x8 for length of fruit, by hybrid 2x5 for flesh thickness by hybrid 1x3 for diameter of fruit, by hybrid 1 x 4 for average weight of fruit and number of fruits per plant, and by the hybrids 7x8 and 2x6 for average yield per plant and length of vine respectively. Variance due to g.c.a. was greater than variance due to s.c.a. for five characters indicating prevalence of additive gene action. Considering overall performance in respect of important economic characters, it may be concluded that hybrids 3x5, 4x6, 5x8 and 4x5 were most promising since these hybrids recorded 93.96, 93.59, 91.20 and 90.51 per cent more yield over superior parent in that order. These hybrids had green and dark-green fruit colour.|
|Appears in Collections:||Thesis|
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