稲の早生遺伝子の研究,特にE座位におけるアイソアレルの分析について〔英文〕

DOI Web Site Web Site 被引用文献4件
  • TSAI KUO-HAI
    Food Crops Research Institute, National Chung-Hsing University

書誌事項

タイトル別名
  • STUDIES ON EARLINESS GENES IN RICE, WITH SPECIAL REFERENCE TO ANALYSIS OF ISOALLELES AT THE <i>E</i> LOCUS
  • イネ ノ ワセ イデンシ ノ ケンキュウ トクニ Eザイ ニ オケル アイソア

この論文をさがす

抄録

By recurrent backcrossing continued up to the B20 generation, isogenic lines with earliness genes were established. A pure line of a rice variety, Taichung 65 (abridged as T65, Japonica type, insensitive to photoperiod) was exclusively used as the recurrent parent; two early maturing cultivars from northern China (A) and northern Japan (B) and two radiation-induced early-maturing mutant lines of T65 were each used as the donor parent. The results of crossing experiments with those isogenic lines demonstrated that the earliness genes from different donor parents were at the same locus on the 8th chromosome (symbolized E), and similarly moved up the time of floral initiation about 7 days and shortened the period from floral initiation to heading by about 3 days. However, when the lines with different E alleles were compared in more detail, they showed significant differences. Evidence was produced showing that the E locus would be a region containing several recombinationary separable subloci and when the “suballeles” were combined in cis form, complementation would restore the function of an E allele. There could also be an element suppressing the function of the whole region and making the recessive allele, e, carried by T65; its mutation may result in induction of dominant E alleles. Slight but significant changes in the effect of E alleles were observed when the isogenic lines were “purified” by backcrossing. Further, isogenic lines having a modifier gene at an independent locus, m, were investigated. The m gene intensified the effect of E alleles, the magnitude of the epistatic effect differing according to E alleles. When combined with e, the m gene had no effect in summer, but promoted heading several days in the winter season. There can be other modifier genes than m exerting a buffering effect when recombined. A summary of earlier papers on these earliness genes was presented in addition.

収録刊行物

被引用文献 (4)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ