PJB-1991-18
EFFECT OF WATER STRESS ON RHIZOSPHERE MYCOFLORA AND ROOT INFECTION OF SOYBEAN
FARZANA ALI AND
ABDUL GHAFFAR
Abstract
Of the 29 species of fungi isolated from the
rhizosphere of 28 days old soybean seedlings. Fusarium spp. Aspergillus flavus and A. niger were the dominant species Plants subjected to water stress showed greater number of fungi in the rhizosphere as compared to non-stressed plants. Population of fungi in the rhizosphere of plants growing at 25% MHC was greater as compared to plants growing at 50, 75 and
100% MHCs and showed a decline with increase in soil moisture. Greater number of plants witted at low moisture level as compared to high moisture level. Infection and or colonization of roots by Macrophomina phaseolina and Fusarium spp., also showed a decline with increasing soil moisture.
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