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Evaluation of Aegilops tauschii (Coss.) germplasm for Karnal bunt resistance in a screen house with simulated environmental conditions

Published online by Cambridge University Press:  09 May 2008

Parveen Chhuneja ,
Satinder Kaur ,
Kuldeep Singh  and
H. S. Dhaliwal
Parveen Chhuneja*
Affiliation:
Department of Plant Breeding, Genetics and Biotechnology, Punjab Agricultural University, Ludhaina-141 004(Punjab), India
Satinder Kaur
Affiliation:
Department of Plant Breeding, Genetics and Biotechnology, Punjab Agricultural University, Ludhaina-141 004(Punjab), India
Kuldeep Singh
Affiliation:
Department of Plant Breeding, Genetics and Biotechnology, Punjab Agricultural University, Ludhaina-141 004(Punjab), India
H. S. Dhaliwal*
Affiliation:
Department of Plant Breeding, Genetics and Biotechnology, Punjab Agricultural University, Ludhaina-141 004(Punjab), India
*
* Corresponding auhtor. E-mail: pchhuneja@rediffmail.com
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Abstract

Karnal bunt (KB) of wheat, caused by Tilletia indica (Mitra) Mundkur, adversely affects international wheat trading and the movement of germplasm between countries due to quarantine restrictions. Breeding for host plant resistance requires the identification of KB resistance sources. Accessions of the D genome progenitor of bread wheat, Aegilops tauschii, were screened in a specially designed screen-house, where the optimum environmental conditions conducive for KB development were simulated by controlling temperature, humidity, fogging and shading. The 183 accessions were subjected to artificial inoculation with a mixture of nine KB isolates, and seven proved highly resistant and four moderately resistant over three rounds of screening over 3 years.

Keywords

Aegilops tauschiigermplasmKarnal buntKB resistanceKB screen-houseTilletia indicaTriticum aestivumwheat
Type
Research Article
Information
Plant Genetic Resources , Volume 6 , Issue 2 , August 2008 , pp. 79 - 84
Copyright
Copyright © NIAB 2008

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