Population genetic structure and adaptive differentiation of iron walnut Juglans regia subsp. sigillata in southwestern China.

ABSTRACT: Southwestern (SW) China is an area of active tectonism and erosion, yielding a dynamic, deeply eroded landscape that influences the genetic structure of the resident populations of plants and animals. Iron walnut (Juglans regia subsp. sigillata) is a deciduous tree species endemic to this region of China and cultivated there for its edible nuts. We sampled 36 iron walnut populations from locations throughout the species' range in SW China and genotyped a total of 765 individuals at five chloroplast DNA regions and 22 nuclear microsatellite loci. Species distribution models were produced to predict the evolution and historical biogeography of iron walnut and to estimate the impacts of climate oscillations and orographic environments on the species' demography. Our results indi

SUBMITTER: Sun YW 

PROVIDER: S-EPMC6953554 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature