中国水稻科学
中國水稻科學
중국수도과학
CHINESE JOURNAL OF RICE SCIENCE
2014年
2期
119-124
,共6页
廖莉%章骁劼%吴建国%石春海
廖莉%章驍劼%吳建國%石春海
료리%장효할%오건국%석춘해
水稻%长根%形态鉴定%基因定位
水稻%長根%形態鑒定%基因定位
수도%장근%형태감정%기인정위
rice%long root%morphological identification%gene mapping
通过甲基磺酸乙酯诱导粳稻品种日本晴,筛选到一个能稳定遗传的苗期长根突变体 lr1(long root 1).在发芽后2、4、6、10和15 d,lr1的主根长度分别比日本晴野生型主根长1.52、1.93、3.93、6.81和6.77 cm,根冠比也显著大于野生型.遗传分析结果表明该基因受一对隐性单基因控制.利用 SSR 分子标记将该突变基因 LR1定位于第10染色体长臂上,位于标记 RM304和 RM7300之间,遗传距离分别为2.0 cM 和3.5 cM.
通過甲基磺痠乙酯誘導粳稻品種日本晴,篩選到一箇能穩定遺傳的苗期長根突變體 lr1(long root 1).在髮芽後2、4、6、10和15 d,lr1的主根長度分彆比日本晴野生型主根長1.52、1.93、3.93、6.81和6.77 cm,根冠比也顯著大于野生型.遺傳分析結果錶明該基因受一對隱性單基因控製.利用 SSR 分子標記將該突變基因 LR1定位于第10染色體長臂上,位于標記 RM304和 RM7300之間,遺傳距離分彆為2.0 cM 和3.5 cM.
통과갑기광산을지유도갱도품충일본청,사선도일개능은정유전적묘기장근돌변체 lr1(long root 1).재발아후2、4、6、10화15 d,lr1적주근장도분별비일본청야생형주근장1.52、1.93、3.93、6.81화6.77 cm,근관비야현저대우야생형.유전분석결과표명해기인수일대은성단기인공제.이용 SSR 분자표기장해돌변기인 LR1정위우제10염색체장비상,위우표기 RM304화 RM7300지간,유전거리분별위2.0 cM 화3.5 cM.
A seedling long root mutant named lr1 (long root 1 ) was isolated from rice cultivar Nipponbare by mutagenesis with ethyl methanesulfonate (EMS)and the long root trait can be stably inherited.The main root in lr1 mutant was 1 .52,1 .93,3.93,6.81 and 6.77 cm longer than those of wild type at 2,4,6,10 and 1 5-day after germination,respectively,and the root-shoot ratio of lr1 mutant was also significantly greater than that in the seedling of Nipponbare.Genetic analysis indicated that the seedling long root mutant phenotype was controlled by a single recessive gene.The LR1 gene was located between the SSR markers RM304 and RM7300 on chromosome 10,and the genetic distance is 2.0 cM and 3.5 cM,respectively.