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genome-wide prediction for hybrids between parents with distinguished difference on exotic introgressions in Brassica napus

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The Crop Journal 2021年第5期9卷 1169-1178页

作者： Dandan Hu Yusheng Zhao Jinxiong Shen Xiangxiang He Yikai Zhang Yong Jiang Rod Snowdon Jinling Meng Jochen C.Reif Jun Zou National Key Laboratory of Crop Genetic Improvement College of Plant Science&TechnologyHuazhong Agricultural UniversityWuhan 430070HubeiChina Department of Breeding Research Leibniz Institute of Plant Genetics and Crop Plant Research(IPK)Stadt Seeland 06466Germany Department of Plant Breeding IFZ Research Centre for BiosystemsLand Use and NutritionJustus Liebig UniversityGiessen 35392Germany

Extensive exotic introgression could significantly enlarge the genetic distance of hybrid parental populations to promote strong *** goal of this study was to investigate whether genome-wide prediction can support pre-breeding in populations with exotic *** evaluated seed yield,seed yield related traits and seed quality traits of 363 hybrids of Brassica napus (AACC) derived from two parental populations divergent on massive exotic introgression of related species in three *** hybrids presented strong heterosis on seed yield,which was much higher than other investigated *** genomic best linear unbiased prediction models considering the exotic introgression and different marker effects (additive,dominance,and epistatic effects) were constructed to test the prediction ability for different traits of the *** analysis showed that the trait complexity,exotic introgression,genetic relationship between the training set and testing set,training set size,and environments affected the prediction *** models with best prediction ability for different traits ***,relatively high prediction ability (e.g.,0.728 for seed yield) was also observed when the simplest models were used,excluding the effects of the special exotic introgression and epistasis effect by5-fold cross validation,which would simplify the prediction for the trait with complex architecture for hybrids with exotic *** results provide novel insights and strategies for genome-wide prediction of hybrids between genetically distinct parent groups with exotic introgressions.

关键词： Hybrid genome-wide prediction Exotic introgression Brassica napus Heterosis

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Genetic control of flowering time in woody plants： Roses as an emerging model

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Plant Diversity 2017年第2期39卷 104-110页

作者： Xue Dong Xiaodong Jiang Guoqiang Kuang Qingbo Wang Micai Zhong Dongmin Jin Jinyong Hu Group of Plant Molecular Genetics and Adaptation Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of Botany ChineseAcademy of Sciences Kunming 650201 Yunnan Province PR China Second High School Rongcheng 264309 Shandong Province PR China

Genetic control of the timing of flowering in woody plants is complex and has yet to be adequately investigated due to their long life-cycle and difficulties in genetic *** in Populus,one of the best woody plant models,have revealed a highly conserved genetic network for flowering timing in ***,traits like continuous flowering cannot be addressed with *** and strawberries have relatively small,diploid genomes and feature enormous natural *** the development of new genetic populations and genomic tools,roses and strawberries have become good models for studying the molecular mechanisms underpinning the regulation of flowering in woody ***,we review findings on the molecular and genetic factors controlling continuous flowering in roses and woodland *** variation at TFL1 orthologous genes in both roses and strawberries seems be the key plausible factor that regulates continuous ***,recent efforts suggest that a two-recessive-loci model may explain the controlling of continuous flowering in *** propose that epigenetic factors,including non-coding RNAs or chromatin-related factors,might also play a *** into the genetic control of flowering time variation in roses should benefit the development of new germplasm for woody crops and shed light on the molecular genetic bases for the production and maintenance of plant biodiversity.

关键词： Rose Continuous flowering Model woody plant Genetics Bulk-segregation analysis genome-wide prediction

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