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Heterosis and combining ability in tomato by line X tester [electronic resource].

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Metwally, E. I

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Language: English Summary language: Arabic Description: P.159-173Other title:

قوة الهجين والقدرة على التألف فى الطماطم بواسطة التلقيح القمي [Added title page title]

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Mansoura University journal of plant production, 2015 v. 6 (2) [electronic resource].

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In: Mansoura University Journal of plant production 2015.v.6(2)Summary: Six diverse lines of tomato were crossed with six testers in line x tester mating fashion to study heterosis relative to mid parents, better parent and check hybrid and combining ability for some plant and fruit characteristics. The experiment work was conducted at the Exp. Farm, Fac. of Envir. Agric. Sci., El Arish, Suez Canal Univ., Egypt, during the period from 2012 to 2014. For heterotic effect, heterosis over mid-parents, better parent and check hybrid were detected in many traits, viz.; plant height, number of branches, total yield/plant and total fruit number. On the other hand, no heterosis was detected for fruit firmness based on check hybrid. The magnitude of SCA variance was greater than GCA variance suggesting the predominance of nonadditive gene action for all studied traits. Among the lines, the good general combiner was AVT09802 for total yield/plant and fruit firmness and AVT01008 for average fruit weight.

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Six diverse lines of tomato were crossed with six testers in line x tester mating fashion to study heterosis relative to mid parents, better parent and check hybrid and combining ability for some plant and fruit characteristics. The experiment work was conducted at the Exp. Farm, Fac. of Envir. Agric. Sci., El Arish, Suez Canal Univ., Egypt, during the period from 2012 to 2014. For heterotic effect, heterosis over mid-parents, better parent and check hybrid were detected in many traits, viz.; plant height, number of branches, total yield/plant and total fruit number. On the other hand, no heterosis was detected for fruit firmness based on check hybrid. The magnitude of SCA variance was greater than GCA variance suggesting the predominance of nonadditive gene action for all studied traits. Among the lines, the good general combiner was AVT09802 for total yield/plant and fruit firmness and AVT01008 for average fruit weight.

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