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Research Article

Estimates of Heterosis and Heterobeltiosis for Morphological Traits in Wheat (Triticum aestivum L.)

Masood Jan , Ghulam Hassan , Iftikhar Khalil and Raziuddin
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An 8x8 full diallel set of bread wheat (Triticum aestivum L.) was studied for heterosis and heterobeltiosis. The magnitudes of heterosis (mid-parent) and heterobeltiosis (better-parent) from F1 were calculated for days to heading, flag leaf area, plant height, spike length, days to maturity and harvest index. All the 56 F1 hybrids and their parents were planted in a randomized complete block design in three replicates. Out of the 56 F1 hybrids, 18 and 16 hybrids for days to heading; 11 and 2 for flag leaf area; 24 and 15 for spike length; 8 and 3 for days to maturity and in 3 and 1 for harvest index expressed significant heterosis and heterobeltiosis, respectively. Maximum limits of heterobeltiosis for flag leaf area, spike length, harvest index, plant height, days to heading and days to maturity were 22.3, 13.03, 11.23, 3.27, 2.60 and 1.82%, respectively. Among parent cultivars, Takbeer, Inqilab-91, Tatara and Idaho-458 proved to be superior combiners. Populations of Tatara x Khattakwal, Takbeer x Inqilab-91, Idaho-458 x Fakhre Sarhad, Fakhre Sarhad x Takbeer and Ghaznav-98 x Takbeer were the best for most of the traits and their use in breeding programmes is suggested.

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  How to cite this article:

Masood Jan , Ghulam Hassan , Iftikhar Khalil and Raziuddin , 2005. Estimates of Heterosis and Heterobeltiosis for Morphological Traits in Wheat (Triticum aestivum L.). Pakistan Journal of Biological Sciences, 8: 1261-1264.

DOI: 10.3923/pjbs.2005.1261.1264


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