丛枝菌根(AM)对无性繁殖茶苗生长及茶叶品质的影响

采用温室盆栽试验 ,分别接种丛枝菌根 (AM)真菌Acaulosporalavis(光壁无梗球囊霉 ,菌号 :34)、Glomusmanihot(木薯球囊霉 ,菌号 :38)和Glomuscaledonium(苏格兰球囊酶 ,菌号 :90 0 36) ,观察AM对枝条繁殖茶苗生长和茶叶品质的影响。试验持续 1 4个月。结果表明 ,接种AM真菌明显促进了无性繁殖茶苗的生长 ,无论是株高还是地上、地下干重都高于不接种者 (CK) ,且差异达极显著水平 (P <0 .0 1 )。AM对茶树吸收无机元素有明显的促进作用 ,尤其是对P、Ca、Mg等的吸收。接种AM真菌的茶苗根际细菌、放线菌数量和酸性磷酸酶活性都明显高于CK。接种AM真菌还提高了茶叶水浸出物、氨基酸、咖啡碱和茶多酚的浓度 ,改善了茶叶的品质。

Influence of AM on the Growth of Vegetative Tea Seedling and the Quality of Tea

In greenhouse, vegetative tea seedlings were inoculated with AM fungi Acaulospora lavis (strain NO. 34), Glomus manihot (strain NO. 38) and Glomus caledonium (strain NO. 90036) to study the effects of AM on the growth of vegetative tea trees and the quality of tea. The pot experiment lasted 14 months. The results indicated that AM promoted the growth of vegetative tea seedlings, not only plant height but also aboveground and underground weights, moreover, the differences between inoculated and uninoculated (CK) tea tree was significant at 0.1% level. AM increased uptake of tea tree to inorganic elements, especially to P, Ca and Mg. The numbers of bacteria and actinomycetes and activity of acid phosphatase in rhizosphere of inoculated tea tree were increased. The important was that the concentration of water_soluble substances, amino acids, coffeine and polyphenols in tea leaves were increased by AM, indicating that the quality of tea was improved.