Because the disease can result in plant death, Botrytis blight may have a significant impact on the establishment and yield of this crop in the field, especially. in Florida (2), but this is the first report of Botrytis blight on Hibiscus spp. Gladiolus, Botrytis gladiolorum, host resistance, varieties. Botrytis gray mold blight has been recorded on H. Maximum plant height of 112.66 cm was shown by Pune Hybrid, whereas the cultivar Punjab Flame gave highest spike length. As far as agronomic characters are concerned, cultivar Anglia was earliest (68.00 days) in spike emergence. Nine varieties, namely Red Beauty, Regency, Snow Princess, True Yellow, Ratna Butterfly, Bis-Bis, Odysee, Hunting Song and Sancerre were found to be the most susceptible to infection (disease reaction: >3.0–4.0). Seventeen varieties were found to be moderately resistant (disease reaction: >1.0–2.0) while, thirty five moderately susceptible to the disease (disease reaction >2.0–3.0). In field conditions, four varieties, namely Dhanvantri, Jacksonville Gold, Nova Lux and Punjab Glance showed very good level of genetic resistance against the disease (disease reaction: ≤ 1.0). After 8 days of incubation, three varieties were found to be moderately resistant (disease reaction: >1.0–2.0) whereas twenty one had moderately susceptible reaction (disease reaction >2.0–3.0) and forty one varieties were found to be moderately susceptible against the disease (disease reaction >2.0–3.0). Diseases (fungal): black spot of rose corm and tuber rot (Begonia, Gladiolus) leaf spot and blight (Alternaria, Botrytis. Twenty eight were found to be moderately resistant (disease reaction: >1.0–2.0) whereas thirty seven showed a moderately susceptible reaction (disease reaction >2.0–3.0). None of the varieties was found to be immune to infection even after 4 days of incubation. Botrytis corm rot/blight (Botrytis gladiolorum) is a major constraint to production of flowers. An investigation was carried out to study the performance of sixty-five cultivars of gladiolus under artificial epiphytotic conditions under laboratory conditions and in the field for resistance against the disease. Methods to manage this devastating disease have relied on identification of resistant cultivars through screening techniques. is one of the most common and destructive diseases of gladiolus that causes great losses every year. Botrytis blight caused by Botrytis gladiolorum Timm. Gladiolus is a commercial flower crop and can be grown in varying climatic conditions. Evaluation of gladiolus ( Gladiolus grandiflorus L.) cultivars for resistance against botrytis blight caused by Botrytis gladiolorumĭepartment of Floriculture and Landscaping, Punjab Agricultural University, Ludhiana-141004
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