ORCID Profile
0000-0002-2722-9361
Current Organisations
Erasmus University Rotterdam
,
Donald Danforth Plant Science Center
,
Saint Louis University
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Publisher: Oxford University Press (OUP)
Date: 09-2010
Publisher: Oxford University Press (OUP)
Date: 06-2014
DOI: 10.1111/JSM.12504
Publisher: Oxford University Press (OUP)
Date: 11-2010
Publisher: Oxford University Press (OUP)
Date: 06-2014
DOI: 10.1111/JSM.12524
Publisher: Wiley
Date: 04-2010
DOI: 10.3732/AJB.0900114
Abstract: Walnuts are a major crop of many countries and mostly cultivated in large-scale plantations with few cultivars. Landraces provide important genetic reservoirs thus, understanding factors influencing the geographic distribution of genetic variation in crop resources is a fundamental goal of agrobio ersity conservation. Here, we investigated the role of human settlements and kinship on genetic variation and population structure of two walnut species: Juglans regia, an introduced species widely cultivated for its nuts, and J. sigillata, a native species cultivated locally in Yunnan. The objectives of this study were to characterize sympatric populations of J. regia and J. sigillata using 14 molecular markers and evaluate the role of Tibetan villages and kin groups (related households) on genotypic variation and population structure of J. regia and J. sigillata. Our results based on 220 walnut trees from six Tibetan villages show that although J. regia and J. sigillata are morphologically distinct, the two species are indistinguishable based on microsatellite data. Despite the lack of interspecific differences, AMOVAs partitioned among villages (5.41%, P = 0.0068) and kin groups within villages (3.34%, P = 0.0068) showed significant genetic variation. These findings suggest that village environments and familial relationships are factors contributing to the geographic structure of genetic variation in Tibetan walnuts.
Location: United States of America
No related grants have been discovered for Allison Miller.