African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Deciphering the genetic basis of stripe rust resistance of exotic winter wheat cultivars and their utilization in pre-breeding

D. Datta1*, M. Prashar1, S. C. Bhardwaj1, Sanjay Singh2, S. P. Das3 and Ashish Kumar4
  1Directorate of Wheat Research, Regional Station, Flowerdale, Shimla, India. 2SBP Agriculture University Meerut, India. 3ICAR Research Complex for NE Region, Tripura Center, India. 4Central Research Institute for Dryland Agriculture, Hyderabad, India.
Email: [email protected]

  •  Accepted: 09 May 2012
  •  Published: 31 December 2012

Abstract

 

Genetic basis of stripe rust resistance was investigated in two exotic winter wheat cultivars namely, Spaldings prolific and China84-40022. Inheritance was studied with the most virulent stripe rust race 46S1119 (avirulent on Yr1, 5, 10, 15, 27, SP, Su, CV and virulent on Yr2, 3, 4, 6, 7, 8, 9, 22, 23, 25). The stripe rust resistance of Spaldings prolific and China84-40022 were governed by single dominant gene. Test of allelism demonstrated that the genes imparting resistance against the pathotype 46S119 in Spaldings prolific, China84-40022, Mega and CappelleDesprez are different. The rust resistance genes of these cultivars were incorporated in to the spring wheat. Three genetic stocks namely, UP2338*3/China84-40022 (FLW3), UP2338*3/Mega (FLW12) and UP2338*3/CappelleDesprez (FLW40) were developed for their subsequent utilization in resistance breeding.

 

Key words: Stripe rust resistance in winter wheat, anticipatory pre-breeding.