Article,
Isotopic composition of plant carbon correlates with water-use efficiency of wheat genotypes
Australian Journal of Plant Physiology, (1984)
Abstract
Variation in carbon-isotope composition among and between wheat genotypes was correlated with variation in water-use efficiency in separate pot experiments conducted in spring-summer and in winter. In the main, winter experiment, the water-use efficiencies ranged from 2 0 to 3 7 mmolC/mol H20 (means of four replicates) while the corresponding isotope effects for leaf material ranged from 1 0225 to 1 0194. l3C was more abundant in grain than in leaves and stems. It is suggested that carbon-isotope analysis may be a useful tool in selection for improved water-use efficiency in breeding programmes for C, species.
