Details

Autor(en) / Beteiligte

• Pu-yang, DING
• Zi-qiang, MO
• Hua-ping, TANG
• Yang, MU
• Mei, DENG
• Qian-tao, JIANG
• Ya-xi, LIU
• Guang-deng, CHEN
• Guo-yue, CHEN
• Ji-rui, WANG
• Wei, LI
• Peng-fei, QI
• Yun-feng, JIANG
• Hou-yang, KANG
• Gui-jun, YAN
• Yu-ming, WEI
• You-liang, ZHENG
• Xiu-jin, LAN
• Jian, MA

Titel

A major and stable QTL for wheat spikelet number per spike validated in different genetic backgrounds

Ist Teil von

• Journal of Integrative Agriculture, 2022-06, Vol.21 (6), p.1551-1562

Ort / Verlag

State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China,Ministry of Science and Technology/Triticeae Research Institute,Sichuan Agricultural University,Chengdu 611130,P.R.China%College of Resources,Sichuan Agricultural University,Chengdu 611130,P.R.China%College of Agronomy,Sichuan Agricultural University,Chengdu 611130,P.R.China%UWA School of Agriculture and Environment and The UWA Institute of Agriculture,Faculty of Science,University of Western Australia,Crawley 6009,Australia

Erscheinungsjahr

2022

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The spikelet number per spike (SNS) contributes greatly to grain yield in wheat. Identifying various genes that control wheat SNS is vital for yield improvement. This study used a recombinant inbred line population genotyped by the Wheat55K single-nucleotide polymorphism array to identify two major and stably expressed quantitative trait loci (QTLs) for SNS. One of them (QSns.sau-2SY-2D.1) was reported previously, while the other (QSns.sau-2SY-7A) was newly detected and further analyzed in this study. QSns.sau-2SY-7A had a high LOD value ranging from 4.46 to 16.00 and explained 10.21–40.78％ of the phenotypic variances. QSns.sau-2SY-7A was flanked by the markers AX-110518554 and AX-110094527 in a 4.75-cM interval on chromosome arm 7AL. The contributions and interactions of both major QTLs were further analyzed and discussed. The effect of QSns.sau-2SY-7A was successfully validated by developing a tightly linked kompetitive allele specific PCR marker in an F2:3 population and a panel of 101 high-generation breeding wheat lines. Furthermore, several genes including the previously reported WHEAT ORTHOLOG OF APO1 (WAPO1), an ortholog of the rice gene ABERRANT PANICLE ORGANIZATION 1 (APO1) related to SNS, were predicted in the interval of QSns.sau-2SY-7A. In summary, these results revealed the genetic basis of the multi-spikelet genotype of wheat line 20828 and will facilitate subsequent fine mapping and breeding utilization of the major QTLs.