Pathological Factors Affecting Survival of Winter Barley Following Controlled Freeze Tests

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Abstract
Recovery from freeze injury is 1 component of winter hardiness in barley [Hordeum vulgare]. A study was conducted to determine to what extent pathogens and nutritional factors introduced during the recovery phase would modify survival of barley following a freeze test. Hardiness, as measured by development of new roots from crown meristems after controlled freeze tests, was depressed by inoculation with Fusarium roseum f. sp. cerealis ''Avenaceum''. Supplementation of the fungus with glucose and amide N, compounds known to accumulate in hardened plants, further reduced survival.

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