Identification of Arbuscular Mycorrhizal Fungi in Sugarcane in Hainan Province

Sugar cane is the most important sugar crop in China,and Hainan Province is one of the four major sugar cane producing areas.Arbuscular mycorrhizae(AM) are highly beneficial for the sugarcane in growth and stress resistance.Twenty samples of sugarcane rhizosphere soil were collected from 7 cities or towns in Hainan,from which a total of 31 AM fungi belonging to 6 genera were isolated by using Gendemann's Wet-screening method.Of these AM fungi 19 were identified and described based on their main morphological characteristics and 12 were not yet identified.The identified AM fungi included 7 Acaulospora species,1 Archaeospora species,6 Glomus species,2 Gigaspora species and 4 Scutellospora species.Spore isolation from the samples showed that Glomus gave the highest isolation frequency among the 6 genera of AM fungi isolated and that Glomus rubiforme was isolated at the highest frequency among the 31 AM fungus species.