陆稻抗旱性主要指标的研究  

A Study on Main Drought Resistant Index of Land Rice

作　　者：吕凤山[1] 侯建华[1] 

机构地区：[1]内蒙古农牧学院

出　　处：《华北农学报》1994年第4期7-12,共6页Acta Agriculturae Boreali-Sinica

摘　　要：在大田栽培水分亏缺条件下，对３个陆稻品种的部分抗旱指标进行了测定，分析在正常供水与水分胁迫两种条件下的生理反应差异，从而对其抗旱性鉴定进行了探讨。结果表明，水分胁迫下的叶片游离脯氨酸含量，可溶性糖含量，叶细胞膜透性，组织相对含水量，离体叶片失水百分率，根冠比等都可作为陆稻抗旱性鉴定指标，并应用以上指标采取模糊隶属法对３个品种的抗旱性进行了综合评价，合江５号属全期弱抗品种，东陆１号为全期中抗品种，推广１号属前期中抗，后期弱抗品种。The drought resistant index of land rice varieties(Donglu 1,Tuiguang 1 and Hejiang 5)under the condition of water deficit in field cultivation was determined,the physiological reaction of these varieties in water stress was analysed,and their drought resistance was studied.The content of free proline and soluble sugar of leaves,membrane permeability of leaves cells,relative water content of tissue,lost water ratio of isolated leaves and root-shoot ratio can act as drought resistant index of land rice under water stress.These indexes can be used to comprehensively appraise drought resistance of these varieties by subordinative fuzzy function.Hejiang 5 is a weak resistant variety in all period,Donglu 1 is a strong resistant variety in all period and Tuiguang 1 is a strong resistant variety in pre-period and is a weak resistant variety in post-period.

关 键 词：陆稻 抗旱性 生理指标 综合评价 

分 类 号：S511.601[农业科学—作物学]