QTL for Main Stem Node Number and Its Response to Plant Densities in 144 Soybean FW-RILs.

ABSTRACT: Although the main stem node number of soybean [Glycine max (L.) Merr. ] is an important yield-related trait, there have been limited studies on the effect of plant density on the identification of quantitative trait loci (QTL) for main stem node number (MSNN). To address this issue, here, 144 four-way recombinant inbred lines (FW-RILs) derived from Kenfeng 14, Kenfeng 15, Heinong 48, and Kenfeng 19 were used to identify QTL for MSNN with densities of 2.2 × 10⁵ (D1) and 3 × 10⁵ (D2) plants/ha in five environments by linkage and association studies. As a result, the linkage and association studies identified 40 and 28 QTL in D1 and D2, respectively, indicating the difference in QTL in various densities. Among these QTL, five were common in the two densities; 36 w

SUBMITTER: Li WX 

PROVIDER: S-EPMC8417731 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature