| Literature DB >> 32734417 |
Jiajun Liu1, Huaping Tang1, Xiangru Qu1, Hang Liu1, Cong Li1, Yang Tu1, Shuiqing Li1, Ahsan Habib2, Yang Mu1, Shoufeng Dai1, Mei Deng1, Qiantao Jiang1, Yaxi Liu1, Guoyue Chen1, Jirui Wang1, Guangdeng Chen3, Wei Li4, Yunfeng Jiang1, Yuming Wei1, Xiujin Lan1, Youliang Zheng5, Jian Ma6.
Abstract
KEY MESSAGE: A novel and major QTL for the effective tiller number was identified on chromosomal arm 1BL and validated in two genetic backgrounds The effective tiller number (ETN) substantially influences plant architecture and the wheat yield improvement. In this study, we constructed a genetic map of the 2SY (20828/SY95-71) recombinant inbred line population based on the Wheat 55K array as well as the simple sequence repeat (SSR) and Kompetitive Allele Specific PCR (KASP) markers. A comparison between the genetic and physical maps indicated the marker positions were consistent in the two maps. Additionally, we identified seven tillering-related quantitative trait locus (QTLs), including Qetn-sau-1B.1, which is a major QTL localized to a 6.17-cM interval flanked by markers AX-89635557 and AX-111544678 on chromosome 1BL. The Qetn-sau-1B.1 QTL was detected in eight environments and explained 12.12-55.71% of the phenotypic variance. Three genes associated with the ETN were detected in the physical interval of Qetn-sau-1B.1. We used a tightly linked KASP marker, KASP-AX-110129912, to further validate this QTL in two other populations with different genetic backgrounds. The results indicated that Qetn-sau-1B.1 significantly increased the ETN by up to 23.5%. The results of this study will be useful for the precise mapping and cloning of Qetn-sau-1B.1.Entities:
Keywords: 55K SNP array; Common wheat; Effective tiller number; Expression pattern
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Year: 2020 PMID： 32734417 DOI： 10.1007/s11103-020-01035-6
Source DB: PubMed Journal: Plant Mol Biol ISSN： 0167-4412 Impact factor: 4.076