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调查了印度东北部梅加拉亚邦(Meghalaya)3个黄兰种植区(Umdihar,Umsaw和Mawlein)内丛枝菌根真菌和暗隔真菌的侵染。分离和鉴定了丛枝菌根真菌孢子,根据不同黄兰种植区内菌根菌种分布和丰富度评价了菌根菌多样性和寄主选择性。结果表明,丛枝菌根真菌侵染显著高于暗隔真菌。丛枝菌根真菌和暗隔真菌的侵染分别是50.91%～58.95%和1.84%～4.11%。真菌孢子密度在三个种植区内变化较大(p>0.05)。在所鉴定的7个属29个菌种中,球囊霉属菌种的丰富度最高。Sorenson系数在0.35-7.0之间。种植区内菌种丰富度在2.0～2.9之间。总的菌种丰富度与总的相对丰富度显著相关(p=0.001)。真菌分布、相对丰富度和主成分分析结果表明,大果球囊霉(Glomus macrocarpum)、Glomus multicaulic、缩不囊霉(G.constrictum)和无梗囊霉是黄兰最偏好的菌种,可能是由于寄主的营养获得和生长较为适当。图6表5参27。
Investigated the infection of arbuscular mycorrhizal fungi and dark septate fungi in three yellowland cultivation areas (Umdihar, Umsaw and Mawlein) in Meghalaya, northeastern India. The arbuscular mycorrhizal fungi spores were isolated and identified. The mycorrhizal fungi diversity and host selectivity were evaluated based on the distribution and richness of mycorrhizal species in different planting areas. The results showed that the arbuscular mycorrhizal fungi infection was significantly higher than dark septum. Infections of arbuscular mycorrhizal fungi and dark septum fungi were 50.91% -58.95% and 1.84% -4.11%, respectively. The spore density of fungi varied greatly in three planting areas (p> 0.05). In the identified seven genera and 29 species, the genus Glomus had the highest abundance. Sorenson coefficient between 0.35-7.0. Planting species richness between 2.0 to 2.9. The total species richness was significantly correlated with the total relative abundance (p = 0.001). The results of fungal distribution, relative abundance and principal component analysis showed that Glomus macrocarpum, Glomus multicaulic, G.constrictum, It is more appropriate for the host’s nutrition to gain and grow. Figure 6 Table 5 Reference 27.