title: Phenolics in the seed coat of wild soybean (Glycine soja) and their significance for seed hardness and seed germination.
abstract: Hardseededness in annual wild soybean (Glycine soja Sieb. Et Zucc.) is a valuable trait that affects the germination, viability, and quality of stored seeds. Two G. soja ecotypes native to Shandong Province of China have been used to identify the phenolics in the seed coat that correlate with the seed hardness and seed germination. Three major phenolics from the seed coat were isolated and identified as epicatechin, cyanidin 3-O-glucoside, and delphinidin 3-O-glucoside. Of the three phenolics, only the change of epicatechin exhibited a significant positive correlation with the change of hard seed percentages both under different water conditions during seed development and under different gas conditions during seed storage. Epicatechin also reveals a hormesis-like effect on the seed germination of G. soja. Epicatechin is suggested to be functionally related to coat-imposed hardseededness in G. soja.
authors.affiliation: Pharmacy Department, Medical Collage, Qingdao University, Qingdao 266021, China.
authors.forename: San
authors.initials: S
authors.lastname: Zhou
authors.forename: Haruo
authors.initials: H
authors.lastname: Sekizaki
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Yang
authors.forename: Satoko
authors.initials: S
authors.lastname: Sawa
authors.forename: Jun
authors.initials: J
authors.lastname: Pan
mesh_terms: D018525:Germination; D010636:Phenols / Q000032:analysis* / Q000378:metabolism; D011786:Quality Control; D012639:Seeds / Q000737:chemistry / Q000254:growth & development* / Q000378:metabolism; D013025:Glycine max / Q000737:chemistry* / Q000254:growth & development / Q000378:metabolism
chemical_list: D010636:Phenols