Study on the Distribution of Endomycorrhizal Fungi in Some Species Root-Plants in Bali

Plants growing on poor soils are commonly associated with endomycorrhizal fungi as a mutualism symbiotic. The fungus takes a role on enhancement of the uptake of soil mineral nutrients particularly phosphorus, thereby enhancing host plant vigor. Despite some of Bali areas particularly in Karangasem and Buleleng have poor soil condition, less study on the endomycorrizhal fungi have been undertaken. The objective of this study are to observe the occurrence and percentage of indigenous endomycorrhizal fungi associated with plants commonly planted at Gerokgak suburb of Buleleng and Sukadana suburb of Karangasem. These two different areas in which these periods categorized as the dry and wet seasons. The root infection were observed by means of Grid-line Intersect method. The number of spores was counted by wet sieving and decanting method. The result showed all root plants species in these areas were having endomycorrhizal infection. The colonization presented as vesicle, internal-external hyphae and spore forms. The number of spore found at Sukadana was higher than those at Gerograk. Such variation could be addressed to the difference of soil texture, in which the soil texture of Gerograk was more sandy-silt and the soil texture of Sukadana was dried-sandy soil.