In:
Journal of Horticultural Sciences, Society for Promotion of Horticulture, Vol. 17, No. 1 ( 2022-09-30), p. 209-219
Abstract:
Resistance responses in the leaves of eight rose genotypes, Knock Out (highly resistant), Arka Nishkant (moderately resistant), R. multiflora (highly susceptible), Arka Swadesh (highly susceptible), IIHRR 13-4 (susceptible), Arka Parimala (susceptible), R. indica (susceptible) and IIHRR 4-15-12 (moderately susceptible), exhibiting varied levels of resistance against black spot were investigated post artificial inoculation with black spot pathogen, Diplocarpon rosae. There was consistent increase in the activities of defense related enzymes such as catalase, peroxidase, polyphenol oxidase, superoxide dismutase and phenylalanine ammonia lyase and other defense related secondary metabolites like phenols and flavonoids at different phases of black spot progression and increase was high in resistant genotypes Knock Out and Arka Nishkant. The peak activity of defense enzymes and high concentration of other metabolites was witnessed during early stages of infection in the resistant genotypes while it was during later phase in the susceptible genotypes. These results suggested that the faster and stronger activation of defense system is associated with the resistance against black spotin the rose genotypes.
Type of Medium:
Online Resource
ISSN:
2582-4899
,
0973-354X
DOI:
10.24154/jhs.v17i1.1027
Language:
Unknown
Publisher:
Society for Promotion of Horticulture
Publication Date:
2022
detail.hit.zdb_id:
2983942-7
