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The influence of genetic structure on phenotypic diversity in the Australian mango (Mangifera indica) gene pool

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Wilkinson, M. J., Yamashita, R., James, M. E., Bally, I. S.E., Dillon, N. L., Ali, A., Hardner, C. M. and Ortiz-Barrientos, D. (2022) The influence of genetic structure on phenotypic diversity in the Australian mango (Mangifera indica) gene pool. Scientific Reports, 12 (1). ISSN 20452322 (ISSN)

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Article Link(s): https://doi.org/10.1038/s41598-022-24800-7

Abstract

Genomic selection is a promising breeding technique for tree crops to accelerate the development of new cultivars. However, factors such as genetic structure can create spurious associations between genotype and phenotype due to the shared history between populations with different trait values. Genetic structure can therefore reduce the accuracy of the genotype to phenotype map, a fundamental requirement of genomic selection models. Here, we employed 272 single nucleotide polymorphisms from 208 Mangifera indica accessions to explore whether the genetic structure of the Australian mango gene pool explained variation in trunk circumference, fruit blush colour and intensity. Multiple population genetic analyses indicate the presence of four genetic clusters and show that the most genetically differentiated cluster contains accessions imported from Southeast Asia (mainly those from Thailand). We find that genetic structure was strongly associated with three traits: trunk circumference, fruit blush colour and intensity in M. indica. This suggests that the history of these accessions could drive spurious associations between loci and key mango phenotypes in the Australian mango gene pool. Incorporating such genetic structure in associations between genotype and phenotype can improve the accuracy of genomic selection, which can assist the future development of new cultivars. © 2022, The Author(s).

Item Type:Article
Business groups:Horticulture and Forestry Science
Keywords:article controlled study cultivar gene pool gene structure genetic analysis genetic association genotype mango nonhuman phenotype single nucleotide polymorphism Southeast Asia Thailand trunk animal Australia bird genetics Mangifera multigene family plant breeding excipient Animals Birds Excipients
Subjects:Science > Botany > Genetics
Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Plant culture > Food crops
Plant culture > Fruit and fruit culture
Agriculture > By region or country > Australia
Agriculture > By region or country > Australia > Queensland
Deposited On:19 Dec 2022 05:06
Last Modified:10 Jan 2023 05:42

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