Improving resistance to environmental stress in beans through genetic selection for carbohydrate partitioning and efficiency of biological nitrogen fixation
Michigan State University
Collaborating Scientists' Institutions: University of Minnesota (US); INIFAP (Mexico)
M. Wayne Adams, Dale Harpstead (US); Rogelin Lepiz, Jorge A. Acosta-Gallego (Mexico)
Peter Graham, Eunice Foster (US); Ronald Ferraras (Mexico)
To develop bean varieties and asjociated rhizobial systems which perform better than existing varieties under conditions of low rainfall and low soil Nitrogen status prevailing
on the small farms in semiarid zones. This research will include identification of the morpho-Physiological characteristics that are associated with or that confer an ability to yield at a satisfactory level under moderate drought stress; applying those selection criteria to segregating populations for testing under stress conditions; screening INIFAP (Instituto Nacional de Investigaciones For,)stales y Agropecuarias) germplasm bank materials; testing efficient, competitive Rhizobirrn strains under conditions of limited
moisture;and combining efficient N-fixing capability with drought tolerance to test selections under water and N stress in Mexico and the US.