CAJ | 학술논문

从水稻T-DNA插入突变体库中鉴定出一个矮杆小粒突变体t129，该突变体与野生型植株相比，植株明显矮化，籽粒粒长明显缩短，千粒重下降。遗传分析表明，t129的突变性状由一对隐性核基因控制，该基因（ T129）经图位克隆定位于水稻第5染色体长臂上，引物InDel43和InDel57之间，物理距离为430 kb，并与标记InDel51共分离。本研究明确了该矮杆小粒突变体的表型特征及遗传规律，为进一步研究调控水稻株高和粒型基因奠定基础。
종수도T-DNA삽입돌변체고중감정출일개왜간소립돌변체t129，해돌변체여야생형식주상비，식주명현왜화，자립립장명현축단，천립중하강。유전분석표명，t129적돌변성상유일대은성핵기인공제，해기인（ T129）경도위극륭정위우수도제5염색체장비상，인물InDel43화InDel57지간，물리거리위430 kb，병여표기InDel51공분리。본연구명학료해왜간소립돌변체적표형특정급유전규률，위진일보연구조공수도주고화립형기인전정기출。
A small grain and dwarf rice mutant, designated as t129, was discovered in the rice T-DNA insertion mutation library. As compared to that in wild-type plants, t129 exhibited characters of dwarf, small grain, and lower 1 000-grain weight ( GW) . Genetic analysis showed the mutant character was controlled by a recessive gene. Through map-based cloning, the gene T129 was located on the long arm of rice chromosome 5 between primer InDel43 and InDel57 with 430 kb physical distance, and it was co-segregated with InDel51 marker. This study defined the phenotypic characteristics and inheritance of a small grain and dwarf mutant, which laid foundation for further study on genes regulating plant height and grain-type.