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Indian Journal of Horticulture
Year : 2008, Volume : 65, Issue : 3
First page : ( 297) Last page : ( 301)
Print ISSN : 0972-8538.

Evaluation of diallel progenies for yield and its contributing traits in tomato under mid-hill conditions

Sharma Deepa1,*, Thakur M.C.

Department of Vegetable Crops, Dr Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan, 173 230.

*Corresponding author's.

1Present address: C/o GSSS Kalpa, Kinnaur, 172 108.

Received:  September,  2007; Revised:  December,  2007; Accepted:  January,  2008.

Abstract

Thirty diverse tomato lines were evaluated and out of these ten were selected which were then crossed in a diallel fashion. The forty five F1's alongwith ten parents were evaluated for horticultural traits and compared to standard hybrid Naveen. On the basis of per se performance and heterosis over better parent, the cross FT-5 x UHF-659 gave the highest positive heterobeltiosis over better parents. The cross AI-9 x UHF-612 was identified as early yielding cross. The heterobeltiotic effect for number of fruits per cluster ranged from -34.39 (EC-15998 x FT-5) to 33.0 percent (FT-5 x UHF-612). AI-9 yielded significantly higher than all other parents. The fruit yield among the crosses varied from 764.33 (EC-174023 x UHF-663) to 1808.23 g (Al 9 x Solan Vajr). The results suggest a high degree of variability and heterosis in positive direction among the crosses. Hence, these crosses exhibited commercial potential to replace the check after further testing.

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Key words

Heterosis, variability, diallel, horticultural traits, yield.

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