Abstract
The genus Vigna (Fabaceae) consists of five subgenera, and includes more than 100 wild species. In Vigna, 10 crops have been domesticated from three subgenera, Vigna, Plectrotropis, and Ceratotropis. The habitats of wild Vigna species are so diverse that their genomes could harbor various genes responsible for environmental stress adaptation, which could lead to innovations in agriculture. Since some of the gene bank Vigna accessions were unidentified and they seemed to be novel genetic resources, these accessions were identified based on morphological traits. The phylogenetic positions were estimated based on the DNA sequences of nuclear rDNA-ITS and chloroplast atpB-rbcL spacer regions. Based on the results, the potential usefulness of the recently described species V. indica and V. sahyadriana, and some wild Vigna species, i.e., V. aconitifolia, V. dalzelliana, V. khandalensis, V. marina var. oblonga, and V. vexillata, was discussed.
Highlights
The genus Vigna, in the family Fabaceae, comprises more than 100 wild species [1]
The subgenus Ceratotropis is thought to have emerged from the subgenus Vigna via the subgenus Plectrotropis [16, 25, 26]
The theoretical basis of this hypothesis is that, while the subgenus Vigna has a symmetric keel without pocket, the subgenus Plectrotropis has a curved keel with a pocket, and the subgenus Ceratotropis has a more prominently twisted keel with a more prolonged pocket
Summary
The genus Vigna, in the family Fabaceae, comprises more than 100 wild species [1] It is an agriculturally important taxon, which includes 10 domesticated species (crops) such as cowpea (Vigna unguiculata (L.) Walpers), mung bean (Vigna radiata (L.) Wilczek) and azuki bean (Vigna angularis (Willd.) Ohwi & Ohashi). Since some of their wild relatives inhabit extreme environments such as arid land, sandy beaches, and limestone karsts [2], they are expected to harbor adaptive genes, which could be used for developing stress-resistant crops for agriculturally unsuitable lands. To increase the genetic diversity of a wild Vigna collection for environmental stress screening, Vigna
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call