Person: Joshi, A.K.
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Joshi
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A.K.
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Joshi, A.K.
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0000-0003-4205-9329 3 results
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- Technique for the maintenance of heterokayotic isolates of Bipolaris sorokiniana under ordinary conditions(Springer, 2012) Chand, R.; Yadav, O.P.; Bashyal, B.M.; Prasad, L.C.; Joshi, A.K.One hundred heterokaryotic isolates of Bipolaris sorokiniana, collected from wheat during 1997-1998, were evaluated for their morphology, growth, number of nuclei/cell and disease causing ability. Autoclaved sorghum grains were used to colonize
Publication - Bipolaris sorokiniana of barley: infection behaviour in different members of Poaceae(Springer, 2011) Bashyal, B.M.; Chand, R.; Kushwaha, C.; Joshi, A.K.; Kumar, S.Host range and infection behaviour of Bipolaris sorokiniana of barley was studied in wheat, barley, rice, phalaris, maize, pearlmillet and sugarcane. B. sorokiniana of barley varied in percent germination, germination behaviour, germ tube length and number of appressoria formation in different hosts. Growth of pathogen was arrested at appressoria formation stage in sugarcane and it could not infect the host. Further accumulation of less cell wall bound phenolics (4-hydroxybenzoic acid, vanillic acid, 4-hydroxybenzaldehyde, vanillin and 4-coumaric acid) and phenylalanine ammonia lyase (PAL) in barley and wheat indicated the role of these compounds in conferring resistance against B. sorokiniana of barle
Publication - Diversity and association of isolates and symptoms of spot blotch caused by Bipolaris sorokiniana of barley (Hordeum vulgare L.)(Springer, 2010) Chand, R.; Pradhan, P.K.; Prasad, L.C.; Kumar, D.; Verma, R.P.S.; Singh, D.P.; Joshi, A.K.A three year (2003-2005) survey was conducted to study the occurrence of spot blotch symptoms on barley genotypes grown in the eastern Gangetic plains of India. Nine types of symptoms were recorded. The two most prevalent symptoms were - oval to elongate surrounded by yellow margin (type A) and, narrow, elongated dark brown spots (type D). It was also observed that symptom type D changed to type A after a week from its appearance. The pathogen Bipolaris sorokiniana isolated from these symptom types were categorized in to four pathogenic groups viz., 1, 2, 3, and 5. These pathogenic groups were distributed among all symptom types. However, groups 1 and 5 were the most common and comprised of around 74% of the total spot blotch pathogen population recovered from all symptom types.
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