Conditional QTL mapping of three yield components in common wheat (Triticum aestivum L.)

Han Zhang; Jiansheng Chen; Ruyu Li; Zhiying Deng; Kunpu Zhang; Bin Liu; Jichun Tian

doi:10.1016/j.cj.2016.01.007

Crop Journal (Jun 2016)

Conditional QTL mapping of three yield components in common wheat (Triticum aestivum L.)

Han Zhang ,
Jiansheng Chen ,
Ruyu Li ,
Zhiying Deng ,
Kunpu Zhang ,
Bin Liu ,
Jichun Tian

Affiliations

Han Zhang: State Key Laboratory of Crop Biology, Ministry of Science and Technology/Key Laboratory of Crop Biology of Shandong Province, Department of Agronomy/Group of Wheat Quality Breeding, Shandong Agricultural University, Tai'an 271018, China
Jiansheng Chen: State Key Laboratory of Crop Biology, Ministry of Science and Technology/Key Laboratory of Crop Biology of Shandong Province, Department of Agronomy/Group of Wheat Quality Breeding, Shandong Agricultural University, Tai'an 271018, China
Ruyu Li: Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
Zhiying Deng: State Key Laboratory of Crop Biology, Ministry of Science and Technology/Key Laboratory of Crop Biology of Shandong Province, Department of Agronomy/Group of Wheat Quality Breeding, Shandong Agricultural University, Tai'an 271018, China
Kunpu Zhang: State Key Laboratory of Crop Biology, Ministry of Science and Technology/Key Laboratory of Crop Biology of Shandong Province, Department of Agronomy/Group of Wheat Quality Breeding, Shandong Agricultural University, Tai'an 271018, China
Bin Liu: State Key Laboratory of Crop Biology, Ministry of Science and Technology/Key Laboratory of Crop Biology of Shandong Province, Department of Agronomy/Group of Wheat Quality Breeding, Shandong Agricultural University, Tai'an 271018, China Crop Research Institute, Shandong Academy of Agricultural Sciences, Jinan 250100, China
Jichun Tian: State Key Laboratory of Crop Biology, Ministry of Science and Technology/Key Laboratory of Crop Biology of Shandong Province, Department of Agronomy/Group of Wheat Quality Breeding, Shandong Agricultural University, Tai'an 271018, China

DOI: https://doi.org/10.1016/j.cj.2016.01.007
Journal volume & issue: Vol. 4, no. 3
pp. 220 – 228

Abstract

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Spike number per m2 (SN), kernel number per spike (KNPS) and thousand-kernel weight (TKW) are the three main components determining wheat (Triticum aestivum L.) yield. To evaluate the relationships among them a doubled haploid (DH) population consisting of 168 lines grown at three locations for three years was analyzed by unconditional and conditional QTL mapping. Thirty-three unconditional QTL and fifty-nine conditional QTL were detected. Among them, two QTL (QSN-DH-2B and QSN-DH-3A-1.1) improved SN, with no effect on KNPS. QKNPS-DH-2B-2.1 improved KNPS, with no effect on SN. QKNPS-DH-1A-1.1, QKNPS-DH-2D-1.1 and QKNPS-DH-6A improved KNPS, with no effect on SN or TKW. QKNPS-DH-6B was associated with increased SN and TKW. In addition, QTKW-DH-4B, QTKW-DH-5B and QTKW-DH-7B increased TKW without decreasing KNPS. These results provide useful information for marker assisted selection (MAS) and improvement in wheat yield.

Published in Crop Journal

ISSN: 2095-5421 (Print); 2214-5141 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Agriculture: Agriculture (General)
Website: https://www.keaipublishing.com/en/journals/the-crop-journal/

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