摘要
以11个辣椒亲本为材料按不完全双列杂交配置30个杂交组合,利用SRAP标记分析亲本间的遗传距离,探究其与配合力、杂种优势间的相关关系。结果表明:辣椒亲本间的遗传距离与亲本间的一般配合力(GCA)、组合间的特殊配合力(SCA)以及杂种优势均无显著的相关性,各性状的杂种优势与组合间SCA的相关性均不显著,只有果长的杂种优势与亲本间GCA呈极显著正相关。以上结果说明,利用遗传距离难以预测配合力以及后代的杂种优势,GCA和SCA也不能完全预测杂种优势。因此,遗传距离和配合力、杂种优势之间的关系还有待于进一步深入的研究。
The SRAP was used to analyze the correlation between the geneic distance with combining ability and heterosis of various agronomic traits in pepper.The materials consisted of 11 parent peppers and 30 F1 hybrids based on half diallel methods.The results showed that there was no significant correlation between the genetic distance and general combining ability(GCA),special combining ability(SCA)and heterosis of pepper parents.There was no significant correlation between SCA and heterosis of all traits,but only significant positive correlation between heterosis of fruit length and GCA.It is difficult to predict the combining ability and heterosis of the offsprings by the genetic distance,GCA and SCA could not be used to predict heterosis completely.Therefore,the relationship between the genetic distance,combining ability and heterosis needs to be further studied.
作者
吴立东
WU Lidong(Sanming Academy of Agricultural Sciences,Shaxian,Fujian 365509,China)
出处
《热带作物学报》
CSCD
北大核心
2020年第4期661-668,共8页
Chinese Journal of Tropical Crops
基金
福建省科技厅区域发展项目(No.2016N3023)
福建省科技厅星火计划项目(No.2018S0030)
福建省科技平台建设项目(No.2018N2003)。
关键词
辣椒
遗传距离
一般配合力
特殊配合力
杂种优势
pepper
genetic distance
general combining ability
specific combining ability
heterosis
