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Effect of Alternaria blight infection on biochemical parameters, quantity and quality of oil of mustard genotypes

Effect of Alternaria blight infection on biochemical parameters, quantity and quality of oil of... Plant defense ability against Alternaria blight infection and subsequent impact on yield and oil quality of mustard was investigated in leading Indian mustard varieties, viz., RSPR-69, Pusa Mahak, RH-30 and PC-5 as check variety. Contents of ascorbic acid, total phenol, activity of superoxide dismutase (SOD) and peroxidase (POX) activity, and cell protecting enzymes, viz., phenylalanine ammonia lyase (PAL), polyphenol oxidase (PPO) increased in infected leaves. Alternaria brassicae infection caused increase in proline, total protein, total amino acid levels along with simultaneous reduction in total sugar, chlorophyll and relative water content (RWC) levels. Variety PC-5, which was found to be most resistant against Alternaria blight infection recorded maximum rise in all the protecting enzymes and antioxidants, viz., PAL (28.25 %), PPO (43.49 %), POX (21.12 %), SOD (28.87 %), ascorbic acid (16.30 %), total phenol (34.40 %) content, proline (77.91 %), total soluble protein (34.62 %) and total amino acid contents (3.70 %), and lowest reduction in total sugar (−21.30 %), chlorophyll (−13.9 %) and RWC (−3.0 %), followed by Pusa Mahak. Test weight, oil content and iodine number value decreased with a concurrent rise in peroxide and sapofication values due to Alternaria blight infection. On the basis of lowest decline in quantity and quality parameters, viz., yield (−11.50 %), oil quantity (−12.70 %), iodine value (−8.85 %) along with least rise in peroxide and saponification values (7.81 and 7.30 %), variety Pusa Mahak was found to be comparable to the check variety PC-5. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Indian Journal of Plant Physiology Springer Journals

Effect of Alternaria blight infection on biochemical parameters, quantity and quality of oil of mustard genotypes

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References (29)

Publisher
Springer Journals
Copyright
Copyright © 2015 by Indian Society for Plant Physiology
Subject
Life Sciences; Plant Sciences; Plant Physiology; Plant Ecology; Plant Biochemistry; Cell Biology; Plant Genetics & Genomics
ISSN
0019-5502
eISSN
0974-0252
DOI
10.1007/s40502-015-0178-z
Publisher site
See Article on Publisher Site

Abstract

Plant defense ability against Alternaria blight infection and subsequent impact on yield and oil quality of mustard was investigated in leading Indian mustard varieties, viz., RSPR-69, Pusa Mahak, RH-30 and PC-5 as check variety. Contents of ascorbic acid, total phenol, activity of superoxide dismutase (SOD) and peroxidase (POX) activity, and cell protecting enzymes, viz., phenylalanine ammonia lyase (PAL), polyphenol oxidase (PPO) increased in infected leaves. Alternaria brassicae infection caused increase in proline, total protein, total amino acid levels along with simultaneous reduction in total sugar, chlorophyll and relative water content (RWC) levels. Variety PC-5, which was found to be most resistant against Alternaria blight infection recorded maximum rise in all the protecting enzymes and antioxidants, viz., PAL (28.25 %), PPO (43.49 %), POX (21.12 %), SOD (28.87 %), ascorbic acid (16.30 %), total phenol (34.40 %) content, proline (77.91 %), total soluble protein (34.62 %) and total amino acid contents (3.70 %), and lowest reduction in total sugar (−21.30 %), chlorophyll (−13.9 %) and RWC (−3.0 %), followed by Pusa Mahak. Test weight, oil content and iodine number value decreased with a concurrent rise in peroxide and sapofication values due to Alternaria blight infection. On the basis of lowest decline in quantity and quality parameters, viz., yield (−11.50 %), oil quantity (−12.70 %), iodine value (−8.85 %) along with least rise in peroxide and saponification values (7.81 and 7.30 %), variety Pusa Mahak was found to be comparable to the check variety PC-5.

Journal

Indian Journal of Plant PhysiologySpringer Journals

Published: Sep 22, 2015

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