苹果枝条交流电阻变化率与抗旱性关系的研究

以五年生红星/山定子、国光/山定子、红富士/山定子、秦冠/山定子、金冠/山定子等品种为材料,在旱地、水浇地条件下的树冠体积比、单株累计产量比及新梢生长量比作为抗旱系数,研究发现,在自然水分渐缺过程中,果树枝条交流电阻变化率与抗旱系数、叶片离体24小时保水力呈负相关关系。试验认为,枝条交流电阻变化率可作为果树抗旱性的一项指标。

The Relations between the Changing Rate of Alternating Resistance in the Branches of Fruit Tree and Drought Resistance

The present study was conducted with the materials of five years old apple,Starking/, M.baccata Borkin,Roll/M.haccata Borkin,Red Fuji/M.baccata Rorkin,Qinguan/M.baccata Borkin,Golden Delicious/M.baccata Rorkin and so on.We regarded volume ratio of tree- crowns,accumulative total production ratio per plant and increment ratio of new gib between dry and irrigated land as drought resistent coefficienacy.The results showed that the change rate of alternating resistance in thebranches of trees were negative related with drought resisiteut coeffi- ciency and water holding capacity of leaf leaving plant for 24 hrs in the process of lossing water naturally.We consider that the changing rates of alternating resistance can be used as an index of drought resistance of fruit trees.