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Rapid phenotyping for adult-plant resistance to stripe rust in wheat

Hickey, L. T. and Wilkinson, P. M. and Knight, C. R. and Godwin, I. D. and Kravchuk, O. Y. and Aitken, E. A. B. and Bansal, U. K. and Bariana, H. S. and DeLacy, I. H. and Dieters, M. J. (2012) Rapid phenotyping for adult-plant resistance to stripe rust in wheat. Plant Breeding, 131 (1). pp. 54-61. ISSN 0179-9541

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Article Link(s): http://dx.doi.org/10.1111/j.1439-0523.2011.01925.x

Abstract

Stripe or yellow rust (YR) is a significant problem in wheat crops worldwide. The deployment of adult-plant resistance (APR) genes in wheat cultivars is considered a sustainable management strategy, as these genes confer partial resistance that is usually non-race specific. Screening for APR typically involves assessment of adult plants in the field, where expression may be influenced by environmental factors. We report a high-throughput screening method for YR APR that can be used to assess fixed lines or segregating populations grown under controlled environmental conditions (CEC). Inoculation of 3-week-old wheat plants from lines with known APR responses to YR, when grown under constant light and temperature, provided disease responses typical of adult plants. Two F-2 populations ('H45' x 'ST93' and 'Wyalkatchem' x 'ST93') segregating for APR were assessed under both CEC and field conditions. These populations showed similar variation in disease response and lines assessed in both environments attained similar rankings. Phenotypic screening using CEC and continuous light provides an opportunity to accelerate the development of new wheat cultivars with durable resistance.

Item Type:Article
Business groups:Crop and Food Science
Additional Information:Hickey, Lee T. Wilkinson, Peter M. Knight, Cheridan R. Godwin, Ian D. Kravchuk, Olena Y. Aitken, Elizabeth A. B. Bansal, Urmil K. Bariana, Harbans S. DeLacy, Ian H. Dieters, Mark J.
Subjects:Plant pests and diseases > Pest control and treatment of diseases. Plant protection
Science > Botany > Genetics
Plant culture > Field crops > Wheat
Deposited On:09 Apr 2014 04:44
Last Modified:09 Apr 2014 04:44

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