Reduced nighttime transpiration is a relevant breeding target for high water-use efficiency in grapevine.

ABSTRACT: Increasing water scarcity challenges crop sustainability in many regions. As a consequence, the enhancement of transpiration efficiency (TE)-that is, the biomass produced per unit of water transpired-has become crucial in breeding programs. This could be achieved by reducing plant transpiration through a better closure of the stomatal pores at the leaf surface. However, this strategy generally also lowers growth, as stomatal opening is necessary for the capture of atmospheric CO2 that feeds daytime photosynthesis. Here, we considered the reduction in transpiration rate at night (En) as a possible strategy to limit water use without altering growth. For this purpose, we carried out a genetic analysis for En and TE in grapevine, a major crop in drought-prone areas. Using recently developed p

SUBMITTER: Coupel-Ledru A 

PROVIDER: S-EPMC4987834 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature