CAJ | 학술논문

碧蚂4号是我国小麦育种的重要骨干亲本之一.本研究利用513对分布于小麦21条染色体上的多态性引物对碧蚂4号与其4个姊妹系的遗传差异进行了分析.分析结果表明,亲本碧玉麦对碧蚂2号的遗传贡献率最高,为41.1%;亲本蚂蚱麦对碧蚂1号的遗传贡献率最高,为47.9%;碧蚂4号与4个姊妹系的平均遗传相似性系数变异范围为0.779～0.823,表明碧蚂4号与4个姊妹系的遗传差异比较大;碧蚂4号在188个位点上与其4个姊妹系存在差异,其特异位点主要源于亲本蚂蚱麦,占碧蚂4号特异位点的50.5%;分布在碧蚂4号1A、1B、1D、2A、2BS、2BL、2D、3A、6AL和7AL上的部分特异位点遗传距离很近,形成了密集特异位点的染色体区段,在这些区段上存在许多与产量、抗病、抗逆和适应性等重要农艺性状相关的基因和QTL位点,这可能是碧蚂4号区别于其4个姊妹系成为骨干亲本的遗传基础.
벽마4호시아국소맥육충적중요골간친본지일.본연구이용513대분포우소맥21조염색체상적다태성인물대벽마4호여기4개자매계적유전차이진행료분석.분석결과표명,친본벽옥맥대벽마2호적유전공헌솔최고,위41.1%;친본마책맥대벽마1호적유전공헌솔최고,위47.9%;벽마4호여4개자매계적평균유전상사성계수변이범위위0.779～0.823,표명벽마4호여4개자매계적유전차이비교대;벽마4호재188개위점상여기4개자매계존재차이,기특이위점주요원우친본마책맥,점벽마4호특이위점적50.5%;분포재벽마4호1A、1B、1D、2A、2BS、2BL、2D、3A、6AL화7AL상적부분특이위점유전거리흔근,형성료밀집특이위점적염색체구단,재저사구단상존재허다여산량、항병、항역화괄응성등중요농예성상상관적기인화QTL위점,저가능시벽마4호구별우기4개자매계성위골간친본적유전기출.
Bima No.4 is one of the most important backbone parents in China. In this research, we analyzed the genetic differention between Bima No.4 and its four sib-lines by employing 513 pairs of polymorphism primers which distributed on 21 chromosomes of wheat. The analysis results indicated that quality had the highest genetic contribution of 41.1% to Bima No.2, while Mazha mai had the highest genetic contribution of 47.9% to Bima No. 1.The average genetic similarity coefficient between Bima No.4 and its its four sib-lines varied from 0.693 to 0.873,which demonstrated that the genetic differentiation between Bima No.4 and its four sib-lines was high. There are 188 different loci between Bima No.4 and its four sib-lines. Most specific loci of Bima No.4 originated from its parent Mazha mai, accountting for 50.5% of Bima No.4. partial specific loci were quite close and defense on chromosome 1A, 1B, 1D, 2A, 2BS, 2BL, 2D, 3A, 6AL and 7AL where genes and QTL loci associated with agronomic traits such as yield, disease resistance, adverce resistance, and adaptability were located, which might be the genetic basis distinguished Bima No.4 from its four sib-lines and became the backbone parent.