摘要： 为了解绿玉树的抗旱性,揭示绿玉树无性系间、个体间的抗旱性差异,选择选育抗旱无性系,对海大3^#等7个绿玉树无性系的抗旱性进行了研究.结果表明,绿玉树有非常强的抗旱性.无性系间萎蔫系数在0.9%～2.6%之间,以沙漠绿抗旱性最强,其凋萎系数为0.9%,其次是海大^#和海大3^#,其凋萎系数为1.%,而笔杆绿则抗旱性最弱,为2.8%;单株间萎蔫系数为0.3%～4.43%,以海大3^#-7最强,其凋萎系数为0.3%,其次为上海绿-2,其凋萎系数为0.4%.供试绿玉树的抗旱性不仅在无性系间具有很大差异,而且在同一无性系不同个体间也存在很大差异.

关键词: 高效能源植物, 绿玉树, 抗旱性, 差异

Abstract: In order to understand the drought resistance of Euphorbia tirucalli and reveal its differences between the clones and the individuals,so as to selecting and breeding drought resistance Euphorbia tirucalli clones,the drought resistance of 7 clones of Euphorbia tirucalli were studied.The results showed that the clones of the Euphorbia tirucalli had very strong drought resistance.The wilting points of the clones were between 0.9%-2.6%,Shamolv was the most drought resistant line,its wilting point was 0.9%,followed by Haida 5^# and Haida3^#,the wilting coefficient was 1.5%,while the Biganlv was the worst drought resistance line,its wilting point was 2.58%;The wilting points of the individuals were between 0.3%-4.43%,Haida3^#-7 was the most drought resistant individual,the wilting coefficient was 0.3%,followed by the Shanghai-2,the wilting coefficient was 0.4%.There is large difference in drought resistant between the tested Euphorbia tirucalli clones and the individuals of the clones.

Key words: Efficiant energy plant, Euphorbia tirucalli, Drought resistance, Differences

中图分类号: 

• S793.9