Novel Grain Weight Loci Revealed in a Cross between Cultivated and Wild Sorghum

The Plant Genome
Yongfu TaoDavid R Jordan

Abstract

Grain weight has increased during domestication of cereals. Together with grain number it determines yield, but the two are often negatively correlated. Understanding the genetic architecture of grain weight and its relationship with grain number is critical to enhance crop yield. Sorghum is an important food, feed, and biofuel crop well-known for its adaptation to drought and heat. This study aimed to dissect the genetic basis of thousand grain weight (TGW) in a BCF population between a domesticated sorghum accession and its wild progenitor, subsp. and investigate its relationship with grain number. Thousand grain weight, grain number, and yield were measured in field trials in two successive years. A strong negative correlation between TGW and grain number was observed in both trials. In total, 17 TGW quantitative trait loci (QTL) were identified, with 11 of them exhibiting an opposing effect on grain number, implying the correlation between TGW and grain number is due to pleiotropy. Nine grain size candidate genes were identified within 6 TGW QTL, and of these 5 showed signatures of selection during sorghum domestication. Large-effect QTL in this study that have not been identified previously in cultivated sorghum were found...Continue Reading

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Citations

Oct 30, 2019·Plant Biotechnology Journal·Yongfu TaoDavid R Jordan
Jun 5, 2020·Journal of Experimental Botany·Guihua ZouYuezhi Tao
Sep 14, 2020·The Plant Journal : for Cell and Molecular Biology·Susan M MoengaDouglas R Cook
May 2, 2021·Scientific Reports·Hideki TakanashiNobuhiro Tsutsumi
Jul 27, 2021·The Plant Journal : for Cell and Molecular Biology·Yongfu TaoDavid R Jordan
Sep 17, 2021·Frontiers in Plant Science·Concetta BurgarellaDavid Pot
Oct 27, 2021·Journal of Experimental Botany·Xiaoyu ZhiEmma Mace
Jan 18, 2022·Planta·Anuj ChiluwalS V Krishna Jagadish

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