Indian Journal of Plant Physiology

  • Year: 2005
  • Volume: 10
  • Issue: 4

Enzymatic studies in Sorghum cultivars under peg induced water stress

  • Author:
  • R.N. Deshmukh1, K.N. Dhumal2,
  • Total Page Count: 5
  • DOI:
  • Page Number: 349 to 353

1New Arts, Commerce and Science College Parner, Ahmednagar, 414 302

2Department of Botany, University of Pune, Ganeshkhind, Pune 411 007 MS

Abstract

The sorghum (Sorghum bicolor) cultivars M 35-1, Phule Maulee (RSLG-262), Phule Yashoda, Sel-3, Swati 108 and CSH-15 R were screened for drought tolerance under PEG-6000 induced water stress from −2 to −8 bars, on the basis of activities of nitrate reductase, peroxidase and polyphenol oxidase. It was noted that the cultivars CSH-15 R and RSLG-262 were drought tolerant as compared to Phule Yashoda and Swati 108. Among the cultivars studied, Sel-3 and M 35-1 were found to be susceptible to water stress at seedling stage. The study indicated that enzymes like peroxidase and polyphenol oxidase along with nitrate reductase may serve as the indicators for testing the water stress tolerance and may be useful for sorghum breeders to evolve drought tolerant cultivars.

Keywords

Nitrate reductase, peroxidase, polyphenol oxidase, sorghum, water stress