数字农科院2.0

The identification of presence/absence variants associated with the apparent differences of growth period structures between cultivated and wild soybeans

文献类型： 外文期刊

作者： Li Yan-fei;Hong Hui-long;Li Ying-hui;Ma Yan-song;Chang Ru-zhen;Qiu Li-juan;Hong Hui-long;Ma Yan-song

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关键词： wild soybean;cultivated soybean;genomic structure variation;interspecific differentiation;photoperiod

期刊名称： JOURNAL OF INTEGRATIVE AGRICULTURE

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收录情况： SCI

摘要： The cultivated soybean (Glycine max (L.) Merr.) was distinguished from its wild progenitor Glycine sofa Sieb. & Zucc. in growth period structure, by a shorter vegetative phase (V), a prolonged reproductive phase (R) and hence a larger RN ratio. However, the genetic basis of the domestication of soybean from wild materials is unclear. Here, a panel of 123 cultivated and 97 wild accessions were genotyped using a set of 24 presence/absence variants (PAVs) while at the same time the materials were phenotyped with respect to flowering and maturity times at two trial sites located at very different latitudes. The major result of this study showed that variation at PAVs is informative for assessing patterns of genetic diversity in Glycine spp. The genotyping was largely consistent with the taxonomic status, although a few accessions were intermediate between the two major clades identified. Allelic diversity was much higher in the wild germplasm than in the cultivated materials. A significant domestication signal was detected at 11 of the PAVs at 0.01 level. In particular, this study has provided information for revealing the genetic basis of photoperiodism which was a prominent feature for the domestication of soybean. A significant marker-trait association with RN ratio was detected at 14 of the PAVs, but stripping out population structure reduced this to three. These results will provide markers information for further finding of R/V related genes that can help to understand the domestication process and introgress novel genes in wild soybean to broaden the genetic base of modern soybean cultivars.

分类号： S

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