文献类型：期刊文献

英文题名：Combining ability from complete diallel design of Camellia oleifera: Implications for the utility of GCA and SCA in oil-related traits breeding

作者：Chai, Jingyu[1] Wang, Kailiang[1,2] Xie, Yunhai[3] Wang, Anni[1] Zhong, Huiqi[1] Yao, Xiaohua[1,2] Lin, Ping[1,2]

第一作者：Chai, Jingyu

通信作者：Lin, P[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, State Key Lab Tree Genet & Breeding, Hangzhou 311400, Zhejiang, Peoples R China;[2]Chinese Acad Forestry, Key Lab Tree Breeding Zhejiang Prov, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China;[3]Forestry Seedling Management Stn Zhejiang Prov, Hangzhou 310020, Zhejiang, Peoples R China

年份：2023

卷号：205

外文期刊名：INDUSTRIAL CROPS AND PRODUCTS

收录：;EI(收录号：20233714710654);Scopus(收录号：2-s2.0-85170258831);WOS:【SCI-EXPANDED(收录号:WOS:001080603500001)】；

基金：This research was supported by Zhejiang Science and Technology Major Program on Agricultural New Variety Breeding (2021C02070-2) , The National Key Research and Development Program of China (2022YFD2200401) , and National Science Foundation of China (31770719).

语种：英文

外文关键词：Camellia oleifera; F1 population; Oil-related traits; Combining ability; Reciprocal effect (REC); Heritability; Heterosis

摘要：Crossbreeding of the elite clones is an important strategy to breed the new germplasms of Camellia oleifera capable of higher oil yield and quality. While the genetic control model and heterosis of oil-related traits in C. oleifera remains challenging. To improve the breeding efficiency, several genetic parameters were evaluated in this study based on a 5 x 5 complete diallel design of C. oleifera. A total of seven oil-related traits were measured for three years in the F1 progenies, including oil content of dry kernel (OC) and the contents of six kinds of fatty acid in the oil. For these seven traits, we calculated their parental general combining ability (GCA), special combining ability (SCA) and heritability. And the changed heterosis in F1 progenies during the growth period was analyzed. The results showed that the GCA and SCA of parents for most of the traits had significant differences among the crosses. And the ratio of GCA to SCA ranged from 1.67 to 2, meaning that the SCA was more important than GCA in C. oleifera breeding. The broad-sense heritability for the seven traits were from 11.74% to 53.38% and these traits were significantly affected by environmental factors. And the variation of heterosis were different at different traits. According to the assessed combining ability, heritability and heterosis, three parental combinations were suggested to use in C. oleifera crossbreeding, which harbored greater potential to produce the progeny with optimal oil-related traits. The cross CL4 xCL40 was most apt to obtain superior progeny in terms of OC and C16:0. Whereas the cross CL4 xCL53 would be also the better choice for culturing progeny with a high OC content. The cross CL10 xCL53 and CL95 xCL53 would be likely to beget superior progeny for the C18:1 and C18:2 content, respectively.