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QTL analysis for some quantitative traits in bread wheat

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Abstract

Quantitative trait loci (QTL) analysis was conducted in bread wheat for 14 important traits utilizing data from four different mapping populations involving different approaches of QTL analysis. Analysis for grain protein content (GPC) suggested that the major part of genetic variation for this trait is due to environmental interactions. In contrast, pre-harvest sprouting tolerance (PHST) was controlled mainly by main effect QTL (M-QTL) with very little genetic variation due to environmental interactions; a major QTL for PHST was detected on chromosome arm 3AL. For grain weight, one QTL each was detected on chromosome arms 1AS, 2BS and 7AS. QTL for 4 growth related traits taken together detected by different methods ranged from 37 to 40; nine QTL that were detected by single-locus as well as two-locus analyses were all M-QTL. Similarly, single-locus and two-locus QTL analyses for seven yield and yield contributing traits in two populations respectively allowed detection of 25 and 50 QTL by composite interval mapping (CIM), 16 and 25 QTL by multiple-trait composite interval mapping (MCIM) and 38 and 37 QTL by two-locus analyses. These studies should prove useful in QTL cloning and wheat improvement through marker aided selection.

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Authors and Affiliations

  1. Molecular Biology Laboratory, Department of Genetics and Plant Bredding, Chaudhary Charan Singh University, Meerut, 250 004, India

    Pushpendra Kumar Gupta, Harindra Singh Balyan, Pawan Laxminarayan Kulwal, Neeraj Kumar, Ajay Kumar, Reyazul Rouf Mir, Amita Mohan & Jitendra Kumar

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  1. Pushpendra Kumar Gupta
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  2. Harindra Singh Balyan
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  3. Pawan Laxminarayan Kulwal
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  4. Neeraj Kumar
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  5. Ajay Kumar
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  6. Reyazul Rouf Mir
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  7. Amita Mohan
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  8. Jitendra Kumar
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Correspondence to Pushpendra Kumar Gupta.

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Project supported by the National Agricultural Technology Project of Indian Council of Agricultural Research, Department of Biotechnology of Government of India, Council of Scientific and Industrial Research of India and Indian National Science Academy

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Pushpendra, K.G., Harindra, S.B., Pawan, L.K. et al. QTL analysis for some quantitative traits in bread wheat. J. Zhejiang Univ. - Sci. B 8, 807–814 (2007). https://doi.org/10.1631/jzus.2007.B0807

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  • DOI: https://doi.org/10.1631/jzus.2007.B0807

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