摘要
接种 11种外生菌根菌株对红椎苗期生长产生了影响。试验苗 2 6周时测定的各生长指标统计分析结果表明 ,接种处理间在干质量、苗高、地径、须根数等指标上均有极显著或显著差异 (P<0 .0 1) ;与未接种对照苗相比 ,接种苗平均高增加 2 0 %～ 75 % ,地径增加 5 0 %～ 10 5 % ,须根数增加4 1%～ 2 4 5 % ,干质量增加 10 0 %以上。试验表明 ,菌根菌接种不仅显著促进植株地上部分的生长 ,且有利于根系的发展。另外 ,不同菌株对红椎根系亲和力的差异性 ,反映出宿主对各菌根菌株的不同依赖性。菌根菌接种还对试验苗净光合速率、蒸腾速率、气孔导度、胞间 CO2 浓度、光合耗水量等有一定的影响。菌株 Pisolithus C9132、MH72 7、C92 16,Rhizopogon 94 80 ,Tricholoma 9810等对红椎苗期生长效果较好 ,为优良菌株 。
As an important indigenous broad leafed tree species,Castanopsis hystrix A.DC.has been commonly adopted for reforestation program in southern China.Many efforts have been tried to enhance the growth of saplings in nursery before transplanting. Mycorrhizal technology could be the most effective way to meet this requirement. This paper reports the inoculant efficacy of 11 ectomycorrhizal fungal isolates belonging to 7 genera(Tuber,Tricholoma, Rhizopogon,Laccaria,Pisolithus, Scleroderma and Descolea)on C. hystrix saplings in a glasshouse.All fungal isolates were capable of colonizing root systems of saplings to form ectomycorrhizal associations 26 weeks after inoculation though the infective rates varied within 48%～95%. Effects of each fungal treatment on the growth and photosynthesis were assessed 26 weeks after inoculation. Statistic analysis revealed the great response of the growth on fungal inoculation. There were substantial differences on the height, basal diameter,dry weight and other growth index of inoculated saplings compared to those of uninoculated(P<0 01). Inoculation also affected photosynthesis, transpiration and water use efficiency of saplings. Isolates, Pisolithus C9132?MH727?C9216, Rhizopogon 9480 and Tricholoma 9810,were the most efficient colonizers for the growth improvement of C. hystris saplings, and the potential for inoculation programs. This is the first report on mycorrhizal formation of the European Perigord black truffle (Tuber melanosporum Vittad.) on Chinese native tree species through inoculation techniques.
出处
《林业科学研究》
CSCD
北大核心
2001年第5期515-522,共8页
Forest Research
关键词
红椎
外生菌根菌
接种效应
光合作用
Castanopsis hystrix
ectomycorrhizal fungi
inoculant efficacy
photosynthesis
