CAJ | 학술논문

从水稻（Oryza sativa L.）协青早B的辐射M2群体中获得以最上节间伸长为特征的长穗颈高秆突变系协青早eB_1和协青早eB_2，与原品系协青早B的秆性状相比，协青早eB_2的第一节间长占总秆长的65.3%, 其第一节间的增长量占秆长总增长量的90.2%；协青早eB_1的第一节间长占总秆长的54.8%，其第一节间的增长量占秆长总增长量的53.3%。遗传分析表明：协青早eB_1和协青早eB_2中的长穗颈高秆性状各由一对隐性基因控制，二者之间互不等位。与已报道的eui基因的等位性测验表明：协青早eB_2的eui基因与其不等位，为新的长穗颈高秆隐性基因,命名为eui2；协青早eB_1的eui基因则与其等位。微卫星分析表明：eui2基因与第10染色体的RM258、RM269、RM271和RM304连锁，其遗传距离分别为12.0 cM、12.9 cM、35.1 cM、1.4 cM。由此推断，eui2基因位于第10染色体长臂的中部。
종수도（Oryza sativa L.）협청조B적복사M2군체중획득이최상절간신장위특정적장수경고간돌변계협청조eB_1화협청조eB_2，여원품계협청조B적간성상상비，협청조eB_2적제일절간장점총간장적65.3%, 기제일절간적증장량점간장총증장량적90.2%；협청조eB_1적제일절간장점총간장적54.8%，기제일절간적증장량점간장총증장량적53.3%。유전분석표명：협청조eB_1화협청조eB_2중적장수경고간성상각유일대은성기인공제，이자지간호불등위。여이보도적eui기인적등위성측험표명：협청조eB_2적eui기인여기불등위，위신적장수경고간은성기인,명명위eui2；협청조eB_1적eui기인칙여기등위。미위성분석표명：eui2기인여제10염색체적RM258、RM269、RM271화RM304련쇄，기유전거리분별위12.0 cM、12.9 cM、35.1 cM、1.4 cM。유차추단，eui2기인위우제10염색체장비적중부。
Two mutants possessing elongated uppermost internode, Xieqingzao eB_1 (XQZeB_1) and Xieqingzao eB_2 (XQZeB_2), were identified from M2 population of Xieqingzao B_line (XQZB) treated with γ_ray. The proportion of uppermost internode length to entire culm length of XQZeB_2 and XQZeB_1 were 65.3% and 54.8%, respectively. Compared with the original XQZB, the increased length of uppermost internode of XQZeB_2 contributed to the total increased culm length by 90.2% as well as XQZeB_1 by 53.3%. Genetic analysis showed that the characters of elongated uppermost internode in the two mutants were governed by one pair of recessive gene respectively. The recessive gene of XQZeB_1 is allelic to the reported eui, but that of XQZeB_2 is non_allelic to it by allelic test. Therefore, the elongated_uppermost_internode gene of XQZeB_2 is a new gene, designated as eui2. Microsatellite markers RM258, RM269, RM271 and RM304, which were linked with eui2 and located on chromosome 10, were identified. The genetic distances from the four markers to eui2 were 12.0 cM, 12.9 cM, 35.1 cM, 1.4 cM, respectively. It could be concluded that eui2 gene was located on the middle of the long arm of chromosome 10.