菌根真菌对桃叶杜鹃种子萌发及幼苗移植的影响

【目的】研究菌根真菌对桃叶杜鹃种子萌发及幼苗移植的影响，为高山杜鹃开发利用及菌根化栽培提供理论依据和技术参考。【方法】以从野外桃叶杜鹃菌根中分离出的真菌混合制剂与不同培养基质混合接种，在不同覆盖条件下，研究桃叶杜鹃种子萌发和幼苗移植情况。【结果】桃叶杜鹃种子在接种菌根真菌的基质中发芽时间提早，其发芽势、发芽率、幼苗成活率及移植成活率比非接种处理均有较大提高，且差异极显著。其中腐殖土＋珍珠岩基质接种松针覆盖处理发芽势最高，达39．00％，发芽率达72．67％；腐殖土基质接种苔藓覆盖处理幼苗成活率最高，达88．33％，移栽成活率达82．21％。【结论】菌根真菌极显著地影响桃叶杜鹃种子萌发及移植。播种采用腐殖土＋珍珠岩基质接种松针覆盖效果较好；移植采用腐殖土基质接种菌苔藓覆盖效果较好。

Effects of mycorrhizal fungi on seed germination and seedling transplant survival rate of Rhododendron annae

Objective]The research aimed to evaluate the effects of mycorrhizal fungi on seed germination and seedling transplant survival rate of Rhododendron annae to provide references for exploitation and mycorrhizal cultivation of alpine rose. Method ]The mixed mycorrhizal fungi isolated from roots of wild Rhododendron annae was inoculated with different matrix. In different coverage treatments, seed germination and seedling transplant survival rate were studied. Result]The results indicated that seed germination of inoculation treatments was earlier than non-inoculation treatment. Germination potential, germination rate, seedling and their transplant survival rate were remarkably increased by inoculation, and the difference was highly significant. The medium for the highest germination potential was humic soil plus pearlite （3：1） covered with pine needle, which germination potential was 39.00% and germination rate was 72.67%. Humic soil inoculation covered with moss enjoyed the maximum seedling survival rate （88.33%） and its transplant survival rate was 82.21%. Conclusion ]Mycorrhizal fungi played a significant role in seed germination and transplant of Rhododendron annae. Humic soil plus pearlite （3：1） inoculation covered with pine needle was better in seeding, and humic soil inoculation covered with moss in transplant.