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The effect of soil phosphate on injury to winter barley caused by mildew infection (Erysiphe graminis f.sp. hordei).

McAinsh, Martin R. and Ayres, Peter G. and Hetherington, A. M. (1990) The effect of soil phosphate on injury to winter barley caused by mildew infection (Erysiphe graminis f.sp. hordei). Annals of Botany, 65 (4). pp. 417-423. ISSN 1095-8290

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Abstract

Populations of winter barley were sown in autumn in large tubs of soil to half of which additional phosphate was supplied. Half the plants of each phosphate treatment were infected with powdery mildew (Erysiphe graminis D.C. f. sp. hordei Marchal) and all plants were transferred to the-field. Infection induced extensive leaf injury during mid-winter in plants at low phosphate, but injury was greatly reduced in the high soil phosphate treatment. The extent of winter injury had a marked effect on the increase in leaf area in spring, and the accumulation of plant d. wt was positively correlated with the percentage of total leaf area remaining undamaged at the end of winter. This, in turn, was strongly influenced by the interaction between powdery mildew and soil phosphate. High soil phosphate may act as a ‘buffer’ to the effects of infection, minimizing the combined effects of infection and abiotic stresses suffered by plants in winter.

Item Type: Article
Journal or Publication Title: Annals of Botany
Uncontrolled Keywords: Barley ; powdery mildew (Erysiphe graminis hordei) ; overwinter ; phosphate ; temperature
Subjects: Q Science > QH Natural history > QH301 Biology
Departments: Faculty of Science and Technology > Lancaster Environment Centre
Faculty of Science and Technology > Engineering
ID Code: 26858
Deposited By: Dr Martin R McAinsh
Deposited On: 31 Jul 2009 11:16
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 16:36
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/26858

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