Identification and validation of plant height, spike length and spike compactness loci in common wheat (Triticum aestivum L.)----中国科学院遗传发育所农业资源研究中心

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论文

论文题目	Identification and validation of plant height, spike length and spike compactness loci in common wheat (Triticum aestivum L.)
作　　者	柳洪; 石志鹏; 麻菲菲; 许云峰; 韩帼豪; 张金鹏; 刘冬成;安调过;
发表年度	2022
刊物名称	BMC PLANT BIOLOGY
卷、期、页码	22; 1;
影响因子
论文摘要	Background: Plant height (PH), spike length (SL) and spike compactness (SCN) are important agronomic traits in wheat due to their strong correlations with lodging and yield. Thus, dissection of their genetic basis is essential for the improvement of plant architecture and yield potential in wheat breeding. The objective of this study was to map quantitative trait loci (QTL) for PH, SL and SCN in a recombinant inbred line (RIL) population derived from the cross 'PuBing3228 x Gao8901' (PG-RIL) and to evaluate the potential values of these QTL to improve yield. Results: In the current study, Five, six and ten stable QTL for PH, SL, and SCN, respectively, were identified in at least two individual environments. Five major QTL QPh.cas-5A.3, QPh.cas-6A, QSl.cas-6B.2, QScn.cas-2B.2 and QScn.cas-6B explained 5.58-25.68% of the phenotypic variation. Notably, two, three and three novel stable QTL for PH, SL and SCN were identified in this study, which could provide further insights into the genetic factors that shape PH and spike morphology in wheat. Conditional QTL analysis revealed that QTL for SCN were mainly affected by SL. Moreover, a Kompetitive Allele Specific PCR (KASP) marker tightly linked to stable major QTL QPh.cas-5A.3 was developed and verified using the PG-RIL population and a natural population. Conclusions: Twenty-one stable QTL related to PH, SL, and SCN were identified. These stable QTL and the user-friendly marker KASP8750 will facilitate future studies involving positional cloning and marker-assisted selection in breeding.
全文链接	http://dx.doi.org/10.1186/s12870-022-03968-0
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