Recent Advances in Physiological and Genetic Studies on Chilling Tolerance in Soybean

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
43-02-03.pdf637.25 KB

Low temperatures cause a decrease in seed yield and deterioration of seed quality in soybeans and have threatened stable soybean production in cool areas. To overcome this problem, physiological and genetic analyses have been conducted as steps towards the development of efficient breeding systems. Several evaluation methods that are useful for physiological studies as well as for genetic screening have been developed. Low temperature treatment for four weeks or longer starting at the first flowering stage in plants was found to reduce all of the yield components and result in genotypic variation in chilling tolerance for seed yield during reproductive growth. Analysis of low seed fertility induced by low temperature treatment prior to flowering revealed that the tetrad stage during pollen development is the most sensitive to chilling. Browning of seed coats, a major factor causing deterioration of seed quality, was induced most severely by low temperature treatment about one week after flowering. In addition, several genetic loci associated with chilling tolerance have been identified. Cultivars and lines with the T allele at the T locus, which controls the color of pubescence, have repeatedly been demonstrated to exhibit better chilling tolerance than those with the other allele, t. Maturity loci controlling flowering time and maturity such as E1, e3 and e4 were also found to be associated with chilling tolerance for both seed yield and quality. However, evidence showing that these loci are directly involved in chilling tolerance remains to be provided.

作成者 FUNATSUKI Hideyuki OHNISHI Shizen

browning in seed coats

evaluation methods

genetic loci

公開者 Japan International Research Center for Agricultural Sciences
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
開始ページ 95
終了ページ 101
DOI 10.6090/jarq.43.95
権利 Japan International Research Center for Agricultural Sciences
言語 eng