Browsing by Author "SMITA, SINGH"
Now showing 1 - 1 of 1
Results Per Page
Sort Options
ThesisItem Open Access BIOCHEMICAL CHARACTERIZATION OF RESISTANT AND SUSCEPTIBLE GENOTYPES OF PIGEONPEA (Cajanus cajan L.) AGAINST FUSARIUM WILT(SARDARKRUSHINAGAR DANTIWADA AGRICULTURAL UNIVERSITY - SARDARKRUSHINAGAR, 2022-11-29) MEET HASMUKHLAL, PADHIYAR; SMITA, SINGHPigeonpea (Cajanus cajan L.) is an important legume crop widely used as food grain as it is rich source of protein, carbohydrate, essential amino acids, minerals and fibres. India is renowned as a major pigeonpea producer country all over the world. Pigeonpea is susceptible to a number of pathogens, among which Fusarium udum is considered as the most important fungal pathogen causing considerable economic loss in India and all over the world. Therefore, it become important to analyze the disease in terms of biochemical responses. Biochemical changes were studied in wilt (Fusarium udum) resistant (ICP-8863, BDN-1 and BDN-2) and susceptible (ICP2376 and BAHAR) genotypes of pigeonpea after 7 days of infection. Inoculum concentration 1 x 106 spores per ml was considered as optimum concentration for infection of Fusarium udum in pigeonpea. The results indicates that the reduction in total soluble sugar was more in susceptible genotypes than resistant. The fold decrease in total soluble sugar in resistant pigeonpea genotypes was found to be 1.24 as compared to susceptible genotypes. The protein content was increased in resistant genotypes in comparison to the susceptible genotypes after infection (1.23 fold). The average percent increase in total phenol content of the wilt resistant and the susceptible genotypes was found to be 22.02 % & 4.79 % respectively. The fold increase in flavonoid content of resistant genotypes over susceptible genotypes was 1.33. The activity of antioxidant enzyme such as peroxidase (PO) and polyphenol oxidase (PPO) were enhanced in resistant genotypes by 1.59 and 1.19 fold respectively. Also, the activity of phenylalanine ammonia lyase (PAL) was increased by 1.57 fold in resistant in comparison to susceptible genotypes. These results suggested that biochemical changes recorded in resistant genotypes helps in restricting the disease during infection.