Research on the Drought Resistance of Five New Sugarcane Varieties
[ Objective ] The resistance of five new sugarcane cultivars such as GUITANG 30 to drought was experimented. [ Method ] The resistance of five new sugarcane cultivars to drought was tested based on the potted experiment and the control of irrigation and the variety-ROC22 with strong drought resistance was the first contrast and ROC16 which was weak drought resistance was the seeond contrast. The cell membrane permeability of leaf,the content of MDA and proline ,the elongation rate of stem ,the rate of dead leaf, the height, stem diameter, number of productive tiller,the yield in the harvest time were measured during the drought-stress. The drought membership function of each cultivar was calculated with the method of Fuzzy Mathematics Membership Function and according to the drought weighted value the drought résistance was comprehensively evaluated. [ Results]The result showed that the drought resistance of GUITANG97-69 was the best and the second was GUITANG02-901 ,both of which aggregative index of the drought resistance were better than that of ROC22. The aggregative index of the drought resistance of GUITANG 30 and GUILIU 1 was close to that of ROC22,belonging to the moderate to strong drought-resisting variety. The drought resistance of GUITANG02467 was worse than that of ROC22 but better than that of ROC16 ,which was the moderate to weak drought-resisting variety. [ Conclnsion]The scientifically theoretic basis of the suitable ecological environment in the extension of sugarcane cultivar was provided.
New sugarcane cultivarDrought resistancePhysiological and biochemical indexesYield traits
国家科技期刊平台
NSTL
万方数据
维普
