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Physiological and biochemical responses of Kinnow mandarin (Citrus nobilis × Citrus deliciosa) to EMS induced mutagenesis

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Title Physiological and biochemical responses of Kinnow mandarin (Citrus nobilis × Citrus deliciosa) to EMS induced mutagenesis
Not Available
 
Creator Sunil Kumar
O. P. Awasthi
R. M. Sharma
Satyabrata Pradhan
 
Subject Antioxidant enzymes
Chlorophyll
EMS
Kinnow mutants
Leaf area
Phenol
 
Description Not Available
The present study was carried out to enhance the genetic variability in Kinnow mandarin (Citrus nobilis Loureiro
× Citrus deliciosa Tenora) using ethyl methanesulfonate (EMS) during 2016–17 and 2017–18. Plants created with different doses of EMS concentration, viz. 0.05%, 0.1%, 0.2% and 0.5% were examined for the various physiological and biochemical alterations in putative mutants aged six years and compared with the wild type (WT). A dose-dependent
decrease in leaf area was recorded in the mutants with increasing doses of EMS concentration and as compared to WT, maximum reduction of 135.52 and 104.92% was witnessed in the mutants E-19 and E-17 developed from 0.5% EMS, whereas the leaves were more succulent in E-16. Chlorophyll a content was higher than chlorophyll b in the mutated population. As compared to WT, maximum decrease in chlorophyll a, total chlorophyll was noticed in the
mutants E-19 generated from 0.5% EMS. Contrary to the physiological alterations, the total phenol, proline and total protein content in the mutants were upregulated by nearly two fold in the mutants developed beyond 0.1% EMS. Significant increase was also noticed in the antioxidant enzymes SOD, CAT, POX and GR activity in the mutants E-16 to E-20 induced from 0.5% EMS. The variation in traits of interest observed in the present study such as better leaf succulency and upregulated antioxidant enzyme activity in the mutant E-16 (0.5% EMS) suggests that the developed mutant could be utilised in Kinnow improvement for abiotic stress tolerance.
Not Available
 
Date 2021-10-11T06:22:33Z
2021-10-11T06:22:33Z
2021-09-01
 
Type Research Paper
 
Identifier Kumar, S., Awasthi, O. P., Sharma, R. M. and Pradhan, S. (2021). Physiological and biochemical responses of Kinnow mandarin (Citrus nobilis × Citrus deliciosa) to EMS induced mutagenesis. Indian Journal of Agricultural Sciences. 91 (7): 1015- 1019.
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/65464
 
Language English
 
Relation Not Available;
 
Publisher Indian Council of Agricultural Research (ICAR), New Delhi