Chapter

Broadening the Genetic Base of Grain Legumes

pp 175-208

Date:

Vigna Species

  • Norihiko TomookaAffiliated withGenetic Resources Center, National Institute of Agrobiological Sciences Email author 
  • , Takehisa IsemuraAffiliated withGenetic Resources Center, National Institute of Agrobiological Sciences
  • , Ken NaitoAffiliated withGenetic Resources Center, National Institute of Agrobiological Sciences
  • , Akito KagaAffiliated withGenetic Resources Center, National Institute of Agrobiological Sciences
  • , Duncan VaughanAffiliated withGenetic Resources Center, National Institute of Agrobiological Sciences

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Abstract

The scientific information about the genus Vigna, which contains nine important food legumes, has been accumulated in the past decade. In this chapter, progress of the genetics of domestication, important agronomic traits, ecological adaptations, and genomic information are summarized. Domestication genetics revealed by a detailed Quantitative trait locus (QTL) analysis for mung bean, black gram, azuki bean, rice bean, and yard-long bean have been described and compared. Amazing abilities of some wild Vigna species to adapt harsh environments were described. Some outstanding examples are adaptation to sandy and saline soils by V. marina and V. trilobata, alkaline limestone rock soils by V. exilis, exposed windy cliff top environments by V. riukiuensis, waterlogged riverside by V. luteola, and shady forests by V. minima. Vigna genome project which is under way and aims to sequence 16 Vigna species will provide a foundation of clarifying genes which are responsible for the abilities to survive under extreme environments.