Journal Article Research Support, Non-U.S. Gov't Phaseolus vulgaris domestication pod dehiscence Aridity Colletotrichum lindemuthianum Research Support, U.S. Gov't, Non-P.H.S. Retroelements SNP genotyping Ty1-copia retrotransposon adaptive domestication anthracnose aridity tolerance bHLH transcription factor candidate genes cell wall core collection cowpea differential expression dirigent gain-of-function mutation gene duplication genetic diversity genome-wide association study landraces landscape genetics local adaptation pod shattering pod wall fiber