Endophytic and Pathogenic Fungal Root Communities Associated with Pea in Sub-humid and Dry Temperate Regions of Himachal Pradesh
Keywords:
Pea root rot complex, survey, fungal endophytes, symptoms, disease incidence.Abstract
Pea root rot/wilt incited by multitude of pathogens is often considered as a major pitfall and yield limiting factor to pea production across the world. Considering the importance of crop and disease in state, major pea growing locations of sub-humid and dry temperate zones were surveyed during the year 2021-2022 to record the prevalence of pea root rot complex and to trace the beneficial indigenous fungi associated with healthy plants. Overall, the incidence of disease complex in all the surveyed locations found ranged between 15.83 to 58.17 per cent. Out of 45 pathogens isolated 27 isolates were obtained from subhumid while 18 were recovered from dry temperate regions of Himachal Pradesh. Based on morpho-cultural features, 15 isolates were identified as Fusarium oxysporum, 13 of Fusarium solani, 6 of Rhizoctonia solani, 3 of Pythium spp., 2 each of Phytophthora sp. and Fusarium equiseti, and one each of Didymella sp., Aphanomyces and Sclerotinia sclerotiorum. Among all these isolates Fusarium oxysporum was recorded as most frequently isolated genera. In addition, endophytic fungi harboured in pea plants were also figured out, in which maximum fungal endophytic isolates (17) were obtained from Kangra district.Downloads
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