77-1 紅樹林生態與菌根相關性之研究( 一) 土壤性質、菌根種類與菌根形態

•  紅樹林生態與菌根相關性之研究土壤性質、菌根菌種類與菌根形態

Study on the Relationship between Mangrove Forest Ecology and Mycorrhizae (I) Soil Characteristics, Mycorrhizal

Fungi and Morphology of Mycorrhizae

胡 弘 道

摘要

水筆仔在水生條件下，甚少有菌根感染，內生菌根孢子數亦少，然在受潮水影響較少之土壤，則內生菌根頻度及孢子數皆明顯增加，顯示菌根化為水筆仔在陸地生存之必需條件。由菌根合成試驗可知，陸地上之內生菌根菌亦能與水筆仔形成內生菌根，故若水筆仔在陸上生長時，將可不依賴固有菌種。

本研究確定紅樹林土壤之內生菌根菌種共18種，其中8種為新種，另未確定學名者共6種，分別以圖及文在此報告中敘述。

[關鍵詞]紅樹林、水筆仔、菌根

English Summary

In this report the soil characteristics of mangrove forest (Kandelia candel (L.) Druce) in Chu-Wei and Tang-Sui, in northern part of Taiwan, were described. 18 species of endomycorrhizal fungi were identified and described, among which eight species were new species. Six species of end omycorrhizal fungi were not yet identified.

Kandelia candel formed few mycorrhizae, if the rootsystem was longer submerged in tidewater of in riverwater. Their mycorrhizal frequency and spore production were greatly increased in the habitat, where the rootsystem was little submerged in water.

The fine rootlets of K. candel could form VA mycorrhizae with Glomus clarum isolated form the rhizosphere of China-fir.

[Key words] mangrove forest, Kandelia candel, mycorrhizae.