Several stably expressed QTL for spike density of common wheat ( Triticum aestivum ) in multiple environments | Zendy

Liu Hang | Zendy; Ma Jian | Zendy; Tu Yang | Zendy; Zhu Jing | Zendy; Ding Puyang | Zendy; Liu Jiajun | Zendy; Li Ting | Zendy; Zou Yaya | Zendy; Habib Ahsan | Zendy; Mu Yang | Zendy; Tang Huaping | Zendy; Jiang Qiantao | Zendy; Liu Yaxi | Zendy; Chen Guoyue | Zendy; Zheng Youliang | Zendy; Wei Yuming | Zendy; Lan Xiujin | Zendy

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Several stably expressed QTL for spike density of common wheat ( Triticum aestivum ) in multiple environments

Author(s) -

Liu Hang,

Ma Jian,

Tu Yang,

Zhu Jing,

Ding Puyang,

Liu Jiajun,

Li Ting,

Zou Yaya,

Habib Ahsan,

Mu Yang,

Tang Huaping,

Jiang Qiantao,

Liu Yaxi,

Chen Guoyue,

Zheng Youliang,

Wei Yuming,

Lan Xiujin

Publication year - 2020

Publication title -

plant breeding

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.583

H-Index - 71

eISSN - 1439-0523

pISSN - 0179-9541

DOI - 10.1111/pbr.12782

Subject(s) - quantitative trait locus , biology , germplasm , locus (genetics) , population , trait , inbred strain , genetics , gene , agronomy , demography , sociology , computer science , programming language

Spike density (SD), an important spike morphological trait associated with wheat yield, is the spikelet number per spike (SNS) divided by spike length (SL). In this study, phenotypic data from eight environments were collected and a recombinant inbred line population (RIL) constructed by the wheat line 20828 and the cultivar 'Chuannong16' and a Wheat55K SNP array‐based constructed genetic linkage map were used to identify SD quantitative trait locus (QTL). Correlation between SD and other agronomic traits was calculated. Genes associated with plant growth and development for major loci were predicted. The results showed that 24 QTLs associated with SD were detected in eight environments. Among them, three major QTL, namely QSd.sicau‐5B.2, QSd.sicau‐2D.3 and QSd.sicau‐4B.1 , explained up to 35.62%, 14.21% and 11.23% of phenotypic variation, respectively. The positive alleles of them were all derived from 'Chuannong16'. The significant relationships between SD and other agronomic traits were detected and discussed. Taken together, the stably expressed SD QTL under different environments identified in this study provided theoretical guidance for further fine mapping and germplasm improvement.

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