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Estimating combining ability for yield and yield contributing traits in cucumber

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Title Estimating combining ability for yield and yield contributing traits in cucumber
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Creator Kalidas Pati, A.D. Munshi, T.K. Behera, Ravinder Kumar, P. Karmakar
 
Subject General combining ability, specific combining ability, cucumber
 
Description Not Available
A study was conducted on a 8 × 8 diallel set of cucumber excluding reciprocals to find out the extent of combining ability for yield and yield attributing characters. The magnitudes of variance due to general as well as specific combining ability were highly significant indicating the importance of both additive and non-additive gene action. Among parents, gynoecious line GBS-1(P1) showed maximum g.c.a effects in desirable direction for node number of first female flower, days to first female flower anthesis, days to fruit set from opening of first female flower, days to first fruit harvest, number of fruits per plant, and vine length. The parent P5 (Pusa Uday) exhibited highest positive GCA effect for fruit length, fruit diameter, average fruit weight and yield per plant. In order of merit the gynoecious hybrids P1 × P5 (GBS-1 × Pusa Uday) and P1 × P6 (GBS-1 × Punjab Naveen) followed by monoecious hybrid P3 × P5 (GS-4 × Pusa Uday), which exhibited highest SCA effects for number of characters including total fruit yield per plant. In case of yield and other yield contributing characters like node number of first female flower, days to first female flower anthesis, days to fruit set from opening of first female flower, days to first fruit harvest, number of fruits per plant and yield per plant where specific combining ability component of variance (δ2s) is more than general combining ability component of variance (δ2g), which indicated preponderance of non-additive gene action. Hence, an improvement programme based on heterosis breeding would be appropriate for improving different traits under study.
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Date 2018-11-23T07:09:02Z
2018-11-23T07:09:02Z
2015-03-01
 
Type Research Paper
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/12927
 
Language English
 
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Publisher Not Available