STUDIES ON SPATIAL AND TEMPORAL VARIATION IN ARBUSCULAR MYCORRHIZAL FUNGI IN STONE FRUIT ORCHARDS OF SOLAN AND SIRMOUR DISTRICTS
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Date
2013
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Abstract
ABSTRACT
The present investigations entitled “Spatial and temporal variation in arbuscular
mycorrhizal fungi in stone fruit orchards of Solan and Sirmour district” were
conducted at said districts of Himachal Pradesh. Fourteen AM species were identified
and characterized. Glomus spp. were the most ubiquitous. Spore population of G.
fasciculatum was highest followed by G. mosseae and G. macrocarpum in all the
orchards. Summer season was found most preferable (as root colonization and spore
density was higher) for arbuscular mycorrhizal (AM) fungi proliferation as compared
to spring and autumn seasons. Survey of stone fruit orchards for soil arbuscular
mycorrhizal (AM) fungi revealed positive correlation of AM spore number and per
cent root colonization with growth, fruit yield and nutrient status of leaf and soil
except K, where negative correlation was observed in most of the orchards. AM spore
number and per cent root colonization were positively correlated with fungal species
and relationship with bacterial species was found negative.