Nấm mycorrhiza dạng củ ở một vùng savanna dạng thung lũng tại tây nam Trung Quốc

Mycorrhiza - Tập 14 - Trang 323-327 - 2003
Li Tao1, Li Jianping1, Zhao Zhiwei1
1Laboratory for Conservation and Utilization of Bio-resources, Yunnan University, Kunming, P.R. China

Tóm tắt

Tình trạng mycorrhiza dạng củ (AM) của 67 loài thực vật trong một cộng đồng savanna tại thung lũng nóng và khô dọc sông Jinsha, tây nam Trung Quốc đã được khảo sát. Kết quả cho thấy khoảng 95% các loài thực vật hình thành AM và 5% có thể hình thành AM. Thành phần nấm AM (AMF) trong đất vùng rễ cũng đã được điều tra. Mật độ bào tử AMF dao động từ 5 đến 6.400 bào tử trên 100 g đất, với trung bình là 1.530, và các bào tử/bào tử hình đã được xác định thuộc về sáu chi khác nhau. Nấm thuộc các chi Glomus và Acaulospora là AMF chiếm ưu thế. Mật độ bào tử AMF cao trong đất vùng rễ, cùng với sự xâm nhập mạnh mẽ vào rễ cây, chỉ ra rằng các loài thực vật phát triển trong vùng savanna kiểu thung lũng này có thể phụ thuộc nhiều vào AM.

Từ khóa

#mycorrhiza dạng củ #AM #AMF #savanna #thung lũng #Jinsha River #thực vật #mật độ bào tử #xâm nhập của nấm

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