Study of heterosis in different cross combinations of tomato for yield and yield components

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Research Paper 01/08/2015
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Study of heterosis in different cross combinations of tomato for yield and yield components

Mehboob Ahmad, Zishan-Gul, Zaheer Ullah Khan, Mazhar Iqbal, Bilal khan, Maria Saleem, Ihsan Ullah
Int. J. Biosci.7( 2), 12-18, August 2015.
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The purpose ofconducting present study was to evaluate the performance of different cross combinations of tomato for mid parent heterosis and better parent heterosis regarding yield and yield related traits. Forthe parameters: No of fruits/clusters, No of fruits/plants, Fruitweight, plant height and yield/plant,some of the combinations showed significant positive mid parent heterosis. No positive significant mid-parent heterosis was observed for the parameters like fruit length and fruit size. Significant better-parent heterosis was observed in some cross-combinations for the parameters: No of fruits/clusters, No of fruits/plants and yield/plant. While, no significant positive heterosis was observed for the parameters like fruit-length, fruit diameter,fruit size and fruit weight. For fruit length and fruit diameter all the combinations showed negative value of heterosis. Significant positive heterosis for yield/plant is great achievement in our study as yield/plant is the ultimate goal of tomato growers.


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