A genome variation map provides insights into the genetics of walnut adaptation and agronomic traits.

ABSTRACT:

Background

Common walnut (Juglans regia L.) is one of the top four most consumed nuts in the world due to its health benefits and pleasant taste. Despite its economic importance, the evolutionary history and genetic control of its adaptation and agronomic traits remain largely unexplored.

Results

We report a comprehensive walnut genomic variation map based on whole-genome resequencing of 815 walnut accessions. Evolutionary analyses suggest that Chinese J. regia diverged from J. sigillata with extensive hybridizations after the split of the two species. In contrast to annual crops, the genetic diversity and heterozygous deleterious mutations of Chinese common walnut trees have continued to increase during the improvement process. Selective sweep analyses identify 902 genes un

SUBMITTER: Ji F 

PROVIDER: S-EPMC8554829 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature