Genetic diversity in the Lima bean (Phaseolus lunatus L.) as revealed by chloroplast DNA (cpDNA) variations

被引:0
|
作者
B. Fofana
P. du Jardin
J.P. Baudoin
机构
[1] Faculté Universitaire des Sciences Agronomiques de Gembloux,Unité de Biologie végétale
来源
Genetic Resources and Crop Evolution | 2001年 / 48卷
关键词
Chloroplast DNA diversity; Genetic resources; Germplasm collection; Probes;
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学科分类号
摘要
Genetic diversity in the Lima bean (P. lunatus L.) was assessed bymeans of two chloroplast DNA probes. Based on data obtained from 152accessions including wild forms and landraces, the two separateMesoamerican and Andean groups were confirmed and a transition poolof genetic diversity was observed in the two botanical formsconsistent with their distribution range. Three primary centres ofgenetic diversity and one secondary diversification spot are proposedfor the wild Lima bean whereas only two domestication sites areunderlined for the landraces. The importance of human intervention inwidening the distribution range and the genetic diversity inlandraces is discussed.
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页码:437 / 445
页数:8
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