Describing the physiological responses of different rice genotypes to salt stress using sigmoid and piecewise linear functions.

ABSTRACT: Rice is the staple food for almost half of the world population. In South and South East Asia, about 40% of rice production is from deltaic regions that are vulnerable to salt stress. A quantitative approach was developed for characterizing genotypic variability in biomass production, leaf transpiration rate and leaf net photosynthesis responses to salinity during the vegetative stage, with the aim of developing efficient screening protocols to accelerate breeding varieties adapted to salt-affected areas. Three varieties were evaluated in pots under greenhouse conditions and in the field, with average soil salinity ranging from 2 to 12 dS m-1. Plant biomass, net photosynthesis rate, leaf transpiration rate and leaf conductance were measured at regular intervals. Crop responses were fitted

SUBMITTER: Radanielson AM 

PROVIDER: S-EPMC5890386 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature