桉树内生真菌对铝毒害胁迫下尾巨桉幼苗抗性特征的影响

Effects of endophytic fungi in Eucalyptus on resistance physiological characteristics of E.urophylla × E.grandis seedlings under aluminum toxicity stress

通过菌液浸泡的方法接种10株内生菌于尾巨桉幼苗,随之将幼苗进行铝胁迫试验,胁迫处理10d后,测量植株叶绿素含量、植株鲜重和植株Al含量。处理A、E和D的总叶绿素含量增加44.78%、38.81%和34.33%。处理D、A和E的铝含量分别减少74.52%、66.24%和54.14%。处理A、E和D的生物量增加43.05%、41.67%和34.72%。菌种A、D、E具有较强的提高植株铝胁迫抗性的能力,可以尝试进行推广试验。

By strain liquid soak method, ten endophytic fungus were inoculated into the seedlings of E. urophylla xE. grandis, the seedlings were tested with aluminum stress for 10 days, then the chlorophyll content, plant fresh weight and aluminum content were measured. The results show that after ten days, compared with control the contents of chlorophyll of treatment A, E and D increased by 44.78%, 38.81% and 34.33%respectively; compared with control the contents of aluminum of treatment D, A and E decreased by 74.52%, 66.24% and 54.14%respectively; compared with control the contents of plant fresh weight of treatment A, E and D increased by 43.05%, 41.67% and 34.72%respectively. After inoculated with No.A, No.D, No. E fungus, the aluminum-resistant capability of Eucalyptus has been improved greatly. The method can be popularized in test.