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The Expression of Partial Resistance of Wheat to Puccinia recondita
Author(s) -
Poyntz B.,
Hyde P. M.
Publication year - 1987
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1987.tb04426.x
Subject(s) - biology , cultivar , puccinia recondita , seedling , horticulture , botany , winter wheat , holdfast , agronomy
A range of winter wheat cultivars, which appeared to show no race‐specific resistance to Puccinia recondita f. sp. tritici , was studied at seedling and adult growth stages to determine the components of partial resistance which might contribute to slow‐rusting in the field. Under controlled environmental conditions, adult plants of cvs Atou, Bouquet, Cappelle‐Desprez and Maris Freeman produced less uredospores per unit area than the control cv. Armada, and uredosori were smaller on these cultivars. Fewer uredosori erupted on cv. Cappelle‐Desprez than on the control, and both cv. Bouquet and cv. Cappelle‐Desprez showed longer latent periods than other cultivars. Cultivar Holdfast had a shorter latent period, with larger and more numerous uredosori than even the highly susceptible cv. Armada. Cultivar Waggoner displayed a similar response to infection to that of the control. The components of partial resistance detected in adult plants were not displayed by seedling leaves.