鉴定与大豆[Glycine max (L.) Merri]荚数垂直分布和结实相关的 QTL。
Identification of QTLs related to the vertical distribution and seed-set of pod number in soybean [Glycine max (L.) Merri].
机构信息
Key Laboratory of Soybean Biology, Ministry of Education, Harbin, China.
Key Laboratory of Soybean Biology and Breeding/Genetics, Ministry of Agriculture, Harbin, China.
出版信息
PLoS One. 2018 Apr 17;13(4):e0195830. doi: 10.1371/journal.pone.0195830. eCollection 2018.
Pod number is an important factor that influences yield in soybean. Here, we used two associated recombinant inbred line (RIL) soybean populations, RIL3613 (containing 134 lines derived from Dongnong L13 × Heihe 36) and RIL6013 (composed of 156 individuals from Dongnong L13 × Henong 60), to identify quantitative trait loci (QTLs) regulating the vertical distribution and quantity of seeds and seed pods. The numbers of pods were quantified in the upper, middle, and lower sections of the plant, as well as in the plants as a whole, and QTLs regulating these spatial traits were mapped using an inclusive complete interval mapping method. A total of 21 and 26 QTLs controlling pod-number-related traits were detected in RIL3613 and RIL6013, respectively, which explained 1.25-11.6698% and 0.0001-7.91% of the phenotypic variation. A total of 34 QTLs were verified by comparison with previous research, were identified in both populations, or were found to regulate multiple traits, indicating their authenticity. These results enhance our understanding of the vertical distribution of pod-number-related traits and support molecular breeding for seed yield.
豆荚数是影响大豆产量的一个重要因素。在这里，我们使用了两个关联的重组自交系（RIL）大豆群体，RIL3613（由 134 个来自 Dongnong L13×Heihe 36 的个体组成）和 RIL6013（由 156 个来自 Dongnong L13×Henong 60 的个体组成），来鉴定调节垂直分布和种子及豆荚数量的数量性状基因座（QTL）。通过包容完全区间作图法，对植株上、中、下部以及整个植株的豆荚数量进行了量化，并对这些空间性状的 QTL 进行了作图。在 RIL3613 和 RIL6013 中，分别检测到了 21 个和 26 个控制与豆荚数相关的性状的 QTL，分别解释了 1.25-11.6698%和 0.0001-7.91%的表型变异。通过与以前的研究进行比较，共有 34 个 QTL 被验证，在两个群体中都被鉴定出来，或者被发现调节多个性状，表明其真实性。这些结果增强了我们对与豆荚数相关的性状的垂直分布的理解，并支持了种子产量的分子育种。
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