文献类型：期刊文献

英文题名：RELATIONSHIP BETWEEN HETEROSIS AND PARENTAL GENETIC DISTANCE BASED ON RAPD AND EST-SSR MARKERS IN PINUS TAEDA L. x P. CARIBAEA MORELET

作者：Luan, Qifu[1] Jia, Min[1] Zhang, Shuainan[1] Jiang, Jingmin[1]

第一作者：栾启福

通信作者：Luan, QF[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China

年份：2015

卷号：44

期号：5

起止页码：841-850

外文期刊名：BANGLADESH JOURNAL OF BOTANY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000368743600020)】；

基金：This research was supported by the Natural Science Foundation of Zhejiang province (LY12C16009) and the Key Technology R&D Program (2012BAD01B02 and 2012C12908-13). This publication is a part of first author's (QL) research work at the Swedish University of Agricultural Sciences (SLU), which was funded by a Swedish Institute scholarship and China Scholarship Council.

语种：英文

外文关键词：Genetic distances; Heterosis; EST-SSR markers; RAPD markers; F-1 hybrid performance

摘要：The assessment of parental genetic distances (GDs) and their correlations with progeny performance have largely been circumvented by DNA marker development. Both strong and weak correlations between progeny performance and parental GDs have been detected in numerous plant species. ESTs (expressed sequence tags) in the pine genome can be functionally annotated, providing ideal makers to explain heterotic effects. We found stronger correlations between F-1 hybrid performance and their parental GDs based on 4 EST-simple sequence repeat (SSR) primer pairs with 19 alleles compared to random amplified polymorphic DNA (RAPD) primers with 46 bands. The correlation coefficients of parental GDs based on EST-SSR and/or RAPDs with the better parental heterosis (BPH) of seedling diameter at ground line (DGL) were 0.288 (p = 0.049) and 0.290 (p = 0.050), respectively. In contrast, there was no significant correlation between parental GDs based on RAPD markers and F-1 hybrid growth traits. Our results demonstrate that appropriate molecular markers more effectively illustrated heterotic effects than randomized markers. We expect that functional gene markers from sequenced genomes will provide a starting point for heterosis research in pines.