Induction of variability in China aster [Callistephus chinensis (L.) Nees] by chemical mutagens
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Authors
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CHANDANA SHIVASWAMY
ICAR-Indian Agricultural Research Institute, New Delhi-110 012, India
Author
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SUDHA PATIL
Navsari Agricultural University, Gujarat-396 450, India
Author
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MALLIKA SINDHA
Navsari Agricultural University, Gujarat-396 450, India
Author
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SHUBHAM JAGGA
ICAR-Indian Agricultural Research Institute, New Delhi-110 012, India
Author
Keywords:
Chemical mutagens, China aster, diethyl sulphonate, Ethyl Methane Sulfonate (EMS)Abstract
The study was conducted at the Floriculture Research Farm, ASPEE College of Horticulture and Forestry, Navsari Agricultural University, Navsari, Gujarat, during 2020-21. Seedlings of China aster variety Arka Kamini were treated with different doses of chemical mutagens, namely Diethyl Sulfonate (DES) and Ethyl Methane Sulfonate (EMS), comprising 11 treatments: 0.05% DES (T1), 0.10% DES (T2), 0.15% DES (T3), 0.20% DES (T4), 0.25% DES (T5), 0.05% EMS (T6), 0.10% EMS (T7), 0.15% EMS (T8), 0.20% EMS (T9), 0.25% EMS (T10) and a control (T11). The effects of the mutagens were evaluated, focusing on the induction of mutants and the occurrence of vegetative and floral abnormalities. A total of 24 mutants with desirable colour characteristics were isolated from the treatments. Additionally, three vegetative chimeras were observed in the 0.20% DES, 0.15% EMS, and 0.20% EMS treatments. Notably, a mutant (T5M1) exhibiting strong red coloured flowers was identified in the 0.25% DES treatment.
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