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Quantitative Trait Locus Mapping of Soybean Maturity Gene E6
Author(s) -
Li Xiaoming,
Fang Chao,
Xu Meilan,
Zhang Fengge,
Lu Sijia,
Nan Haiyang,
Su Tong,
Li Shichen,
Zhao Xiaohui,
Kong Lingping,
Yuan Xiaohui,
Liu Baohui,
Abe Jun,
Cober Elroy R.,
Kong Fanjiang
Publication year - 2017
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci2017.02.0106
Subject(s) - biology , locus (genetics) , quantitative trait locus , cultivar , trait , genetics , gene , gene mapping , genetic marker , marker assisted selection , botany , computer science , chromosome , programming language
Soybean [ Glycine max (L.) Merr.] sensitivity to photoperiod determines adaptation to a specific range of latitudes for soybean cultivars. When temperate‐adapted soybean cultivars are grown in low latitude under short day conditions, they flower early, resulting in low grain yield, and consequently limiting their utility in tropical areas. Most cultivars adapted to low‐latitude environments have the trait of delayed flowering under short day conditions, and this trait is commonly called long juvenile (LJ). In this study, the E6 locus, the classical locus conditioning the LJ trait, was molecularly mapped on Gm04 near single‐nucleotide polymorphism marker HRM101. Testcross, genetic mapping, and sequencing suggest that the E6 and J loci might be tightly linked. Genetic interaction evaluation between E6 and E1 suggests that E6 has a suppressive effect on E1 and that the function of E6 is dependent on E1 . The tagging markers for E6 are very useful for molecular breeding for wide adaptation and stable productivity of soybean under low‐latitude environments. Molecular identification and functional characterization of the E6 gene will greatly facilitate the understanding of the genetic and molecular mechanisms underlying the LJ trait.