利用SSR标记鉴定西瓜杂交种新喜3号纯度
任艺慈 , 刘喜存 , 王文英 , 高展 , 王向东 , 郭春江 , 李江伟
中国瓜菜 ›› 2024, Vol. 37 ›› Issue (8) : 131 -135.
利用SSR标记鉴定西瓜杂交种新喜3号纯度
Identification of seed purity of watermelon hybrid Xinxi 3 by SSR marker
为了提高杂交种筛选效率,从23对西瓜简单重复序列(simple sequence repeat, SSR)引物中筛选适用于西瓜杂交种新喜3号及其亲本的特异性引物并进行种子纯度鉴定。结果表明,1对引物BVWS00208在亲本间具有多态性且在杂交后代中兼具双亲条带,属于共显性标记。将该引物在98个杂交后代中进行验证,纯度鉴定结果为98.9%,通过传统田间纯度鉴定结果为98.0%,二者误差≤1%。综上,SSR引物BVWS00208能够作为特异引物对西瓜杂交种新喜3号进行种子纯度鉴定,且该方法便捷经济,能为该品种的制种和推广提供技术支持。
In order to improve the efficiency of hybrid screening, this study screened specific primers suitable for the watermelon hybrid Xinxi 3 and its parents from 23 pairs simple sequence repeat (SSR) primers in watermelon. The results showed that one pair of primers BVWS00208 showed polymorphism between parents and had both parental bands in hybrid offspring, belonging to codominant marker. The primer was validated in 98 hybrid individuals, and the purity identification result was 98.9%. The traditional field test showed the purity was 98.0%, with an error of ≤1% between them. This indicates that the primer BVWS00208 can serve as a specific primer for seed purity detection of watermelon hybrid Xinxi 3. The identification is convenient and economical, which can provide technical support for the seed production and promotion of this variety.
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河南省科技攻关计划项目(222102110361)
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