AUTHOR=You Jianing , Liu Hang , Wang Surong , Luo Wei , Gou Lulu , Tang Huaping , Mu Yang , Deng Mei , Jiang Qiantao , Chen Guoyue , Qi Pengfei , Peng Yuanying , Tang Liwei , Habib Ahsan , Wei Yuming , Zheng Youliang , Lan Xiujin , Ma Jian TITLE=Spike Density Quantitative Trait Loci Detection and Analysis in Tetraploid and Hexaploid Wheat Recombinant Inbred Line Populations JOURNAL=Frontiers in Plant Science VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2021.796397 DOI=10.3389/fpls.2021.796397 ISSN=1664-462X ABSTRACT=
Spike density (SD) is an agronomically important character in wheat. In addition, an optimized spike structure is a key basis for high yields. Identification of quantitative trait loci (QTL) for SD has provided a genetic basis for constructing ideal spike morphologies in wheat. In this study, two recombinant inbred line (RIL) populations (tetraploid RIL AM and hexaploid RIL 20828/SY95-71 (2SY)) previously genotyped using the wheat55K SNP array were used to identify SD QTL. A total of 18 QTL were detected, and three were major and one was stably expressed (