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应用盆栽试验法,比较研究了接种珠状球囊霉和幼套球囊霉对降香黄檀幼苗生长及光合作用的影响。结果表明,2个接种处理组的降香黄檀幼苗根系均能形成典型的菌根,侵染率分别为95.42%(GM)和79.17%(GE);接种处理组幼苗的株高和地茎比对照组分别增长46%～59.09%、23.95%～29.41%,菌根依赖性分别为451%和363%。与对照组相比,接种处理组幼苗叶片净光合速率、气孔导度和蒸腾速率均高于对照组,但只有净光合速率达到了显著水平;接种处理组苗木的叶片叶绿素a、b和总叶绿素的含量高于对照组,叶绿素a/b比值小于对照组。整体比较,接种GM的幼苗的平均株高、地茎、生物量和净光合速率等均优于接种GE。
Pot experiments were conducted to study the effects of inoculation with Glomus wallichii and Glomus globulus on the growth and photosynthesis of Dalbergia davidiana seedlings. The results showed that the typical mycorrhizal fungi could be formed in both inoculation groups with the infection rates of 95.42% (GM) and 79.17% (GE), respectively. The plant height and stem Which increased by 46% -59.09%, 23.95% -29.41% and mycorrhizal dependency was 451% and 363% respectively compared with the control group. Compared with the control group, the net photosynthetic rate, stomatal conductance and transpiration rate of the seedlings in inoculation group were higher than those in the control group, but only the net photosynthetic rate reached a significant level. The leaf chlorophyll a, b and total chlorophyll Higher than the control group, the chlorophyll a / b ratio is less than the control group. In general, the average plant height, stem diameter, biomass and net photosynthetic rate of seedlings inoculated with GM were better than GE.