Abstract
Raising crop water use efficiency (WUE) is the physiological basis to implement crop high efficiently using water. The present soil column and field experiments are designed to investigate the change of wheat WUE (Triticum aestivum L.) at whole plant level and root system growth in evolution and the relationship between WUE and its root system growth using 10 wheat evolution genotypes with different ploidy chromosomes sets. Results show that in wheat evolution from 2n→6n, WUE at whole plant level increases with the increase of ploidy chromosomes, and root system growth (root weight, root length) and root/shoot ratio of wheat decrease with the increase of ploidy chromosomes under dry and irrigated conditions. WUE is negatively correlated with root weight and root/shoot ratio of wheat in evolution, significantly. Root system growth has an adverse redundancy for WUE in wheat evolution, and the root redundancy reduces with the increase of ploidy chromosomes, which result in the increase of wheat WUE at whole plant level.
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Boogaard, R., Veneklaas, E., Lambers, H., The association of biomass allocation with growth and water use efficiency of two Triticum aestivum cultivars, Aust. J. Plant Physiol., 1996, 23: 751.
Austin, R. B., Morgan, C. L., Flag leaf photosynthesis of Triticum aestivum and related diploid and tetraploid species, Ann. Bot. 1982, 49: 177.
Zhang, R. X., Gao, Z., The difference of photosynthetic triats after leaf expansion among wheat species and varieties and their mechanisms, in Research Progress on Crop High Yield and High Efficiency (in Chinese) (eds. Zou, Q., Wang, X. C.), Beijing: Sciences Press, 1994, 35.
Wu, Y. Y., Zhang, R. X., Wei, J. C., The shape and structure of mesophyll cell and chloroplast of wheat and its relationship with photosynthesis rate, Journal of Nanjing Normal University (Natural Science), 1992, 15: 95.
Richards, J., Mornhinwed, D. W., Ferris, D. M. et al., Leaf photosynthesis and conductance of selected Triticum species at different water potential, Plant Physiol, 1987, 83: 1014.
Zhang, Z. B., Shan, L., Comparison study on water use efficiency of wheat flag leaf, Chinese Science Bulletin, 1998, 43(14): 1205.
Zhang, Z. B., Shan, L., Xu, Q., Background analysis of chromosome controlling genetic of water use efficiency of Triticum, Acta Genetica Simca, 2000, 27(3): 240.
Mayland, H. F., Johnson, D. A., Asay, K. H. et al., Ash, carbon isotope discrimination, and silicon as estimators of transpiration efficiency in crested wheatgrass, Aust. J. Plant Physiol., 1993, 20: 361.
Siddique, K. H. M., Belford, P. K., Tennant, D., Root: shoot ratio of old and modern, tall and semidwarf wheat in a Meditertanean environment, Plant and Soil, 1990, 121: 89.
Passioura, J. B., Root and drought resistance, Agricultural Water Management, 1983, 7: 265.
Li, H., Zhang, D. Y., Primarily study on root system characteristic and root system growth redundancy of spring wheat in seim-arid area, Chinese Journal of Applied Ecology, 1999, 10(1): 26.
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Zhang, S., Shan, L. & Deng, X. Change of water use efficiency and its relation with root system growth in wheat evolution. Chin. Sci. Bull. 47, 1879–1883 (2002). https://doi.org/10.1360/02tb9411
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DOI: https://doi.org/10.1360/02tb9411