CAJ | 학술논문

利用花药基部开裂长度存在明显差异的粳稻品种 TD70和籼稻品种 Kasalath的重组自交系（包含240个系）为作图群体，对控制水稻花药基部开裂长度的 QTL进行鉴定，并对水稻花药基部开裂长度和其他农艺性状进行相关性分析。利用 IciMappingv3.4软件，运用复合区间作图法，以均匀分布于12条染色体的141个 SSR标记进行花药基部开裂长度的QTL检测，共检测到2个 QTL位点。位于第6染色体 RM3和 RM3628之间的 qLDBT6， LOD值3.23，贡献率6.18%，加性效应17.74%。qLDBT8位于第8染色体 RM1376和 RM4085之间，LOD值2.95，贡献率8.00%，加性效应20.09%，推测该区域与小穗不育有重要关系。RIL群体的花药基部开裂长度与剑叶宽、千粒质量、粒长、粒宽、粒厚间存在极显著正相关，与抽穗期、株高、分蘖数、剑叶长、总粒数、结实率和抽穗当天最高温度、抽穗期平均温度、抽穗期最高温度以及芒长之间不相关。
이용화약기부개렬장도존재명현차이적갱도품충 TD70화선도품충 Kasalath적중조자교계（포함240개계）위작도군체，대공제수도화약기부개렬장도적 QTL진행감정，병대수도화약기부개렬장도화기타농예성상진행상관성분석。이용 IciMappingv3.4연건，운용복합구간작도법，이균균분포우12조염색체적141개 SSR표기진행화약기부개렬장도적QTL검측，공검측도2개 QTL위점。위우제6염색체 RM3화 RM3628지간적 qLDBT6， LOD치3.23，공헌솔6.18%，가성효응17.74%。qLDBT8위우제8염색체 RM1376화 RM4085지간，LOD치2.95，공헌솔8.00%，가성효응20.09%，추측해구역여소수불육유중요관계。RIL군체적화약기부개렬장도여검협관、천립질량、립장、립관、립후간존재겁현저정상관，여추수기、주고、분얼수、검협장、총립수、결실솔화추수당천최고온도、추수기평균온도、추수기최고온도이급망장지간불상관。
A population of 240 recombinant inbred lines (RIL) was derived from a cross between Japonica rice cultivar TD70 and Indica cultivar Kasalath, and their linkage map including 141 SSR markers was used to locate the QTLs control ing the length of dehiscence at the basal part of thecae (LDBT). Then, the correlations between LDBT and other agronomic traits of rice were analyzed. Two QTLs con-trol ing LDBT were mapped on chromosome 6 and 8, respectively. qLDBT6 was mapped between RM3 and RM3628 markers on chromosome 6 with a LOD value of 3.23, contribution rate of 6.18% and additive effect of 17.74%. qLDBT8 was mapped between RM1376-RM4085 markers on chromosome 8 with a LOD value 2.95, contribution rate of 8.00% and additive effect of 20.09%. This domain probably had a relationship with the sterility of rice. The LDBT of RILs had extremely signifi-cant positive correlations with flag leaf width, 1 000-grain weight, grain width, grain length and grain thickness, but no significant correlations with other agronomic traits, such as plant height, heading date, til er number, flag leaf length, average and the maximum temperature during heading period or rice.