Mapping QTLs controlling kernel dimensions in a wheat inter-varietal RIL mapping population

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Ruiru ChengZhengqiang Ma

Abstract

Seven kernel dimension QTLs were identified in wheat, and kernel thickness was found to be the most important dimension for grain weight improvement. Kernel morphology and weight of wheat (Triticum aestivum L.) affect both yield and quality; however, the genetic basis of these traits and their interactions has not been fully understood. In this study, to investigate the genetic factors affecting kernel morphology and the association of kernel morphology traits with kernel weight, kernel length (KL), width (KW) and thickness (KT) were evaluated, together with hundred-grain weight (HGW), in a recombinant inbred line population derived from Nanda2419 × Wangshuibai, with data from five trials (two different locations over 3 years). The results showed that HGW was more closely correlated with KT and KW than with KL. A whole genome scan revealed four QTLs for KL, one for KW and two for KT, distributed on five different chromosomes. Of them, QKl.nau-2D for KL, and QKt.nau-4B and QKt.nau-5A for KT were newly identified major QTLs for the respective traits, explaining up to 32.6 and 41.5% of the phenotypic variations, respectively. Increase of KW and KT and reduction of KL/KT and KW/KT ratios always resulted in significant higher grain ...Continue Reading

References

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Citations

Dec 18, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Li YangYong Zhang
Oct 2, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Zhaoyan ChenZhongfu Ni
Jun 3, 2018·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Faji LiXianchun Xia
Aug 11, 2019·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Xiaoqian WangLingrang Kong
May 7, 2019·Frontiers in Plant Science·Francesca DesiderioElisabetta Mazzucotelli
Mar 9, 2021·Critical Reviews in Biotechnology·Namrata Dhaka, Rita Sharma
Mar 7, 2021·International Journal of Molecular Sciences·Gamila Mohamed Idris ElhadiHisashi Tsujimoto

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Software Mentioned

MapDraw
SPSS
/ QTL
Mapmaker

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