Abstract
AbstractThe genetic diversity of germplasm is critical for exploring genetic and phenotypic resources and has important implications for crop-breeding sustainability and improvement. However, little is known about the factors that shape and maintain genetic diversity. Here, we assembled a high-quality chromosome-level reference of the Chinese common apricot ‘Yinxiangbai’, and we resequenced 180 apricot accessions that cover four major ecogeographical groups in China and other accessions from occidental countries. We concluded that Chinese-cultivated common apricot germplasms possessed much higher genetic diversity than those cultivated in Western countries. We also detected seven migration events among different apricot groups, where 27% of the genome was identified as being introgressed. Remarkably, we demonstrated that these introgressed regions drove the current high level of germplasm diversity in Chinese-cultivated common apricots by introducing different genes related to distinct phenotypes from different cultivated groups. Our results highlight the consideration that introgressed regions may provide an important reservoir of genetic resources that can be used to sustain modern breeding programs.
Publisher
Oxford University Press (OUP)
Subject
Horticulture,Plant Science,Genetics,Biochemistry,Biotechnology
Reference59 articles.
1. Flint-Garcia, S. A. Genetics and consequences of crop domestication. J. Agric. Food Chem. 61, 8267–8276 (2013).
2. Migicovsky, Z., Warschefsky, E., Klein, L. L. & Miller, A. J. Using living germplasm collections to characterize, improve, and conserve woody perennials. Crop Sci. 59, 2365–2380 (2019).
3. Powell, W. & Barsby, T. Germplasm diversity and genetics to drive plant breeding for Africa. Successful Agricultural Innovation in Emerging Economies: New Genetic Technologies for Global Food Production (eds Bennett, D. & Jennings, R.) (Cambridge University Press, 2013).
4. Bourguiba, H. et al. Genetic structure of a worldwide germplasm collection of Prunus armeniaca L. Reveals three major diffusion routes for varieties coming from the species’ center of origin. Front. Plant Sci. 11, 638 (2020).
5. Faust, M., Surányi, D. & Nyujtó, F. Origin and Dissemination of Apricot. Hortic. Rev. 22, 225–260 (1998).
Cited by
20 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献