Whitehead , M.D (1958) Pathology and pathological histology of downy mildew, Sclerophthora macrospora, on six graminicolous hosts. Phytopathology, 48 (9). pp. 485-493.
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Abstract
At Missouri Agricultural Experiment Station, Columbia, oospores of S. [Sclero-spora] macrospora were found in the tissues of a proliferated head of Texas Black-hull Kafir sorghum, saved from a field at Amherst, Texas, where spikelet abnormalities had been described in 1936 (Heredity, 27, pp. 183-194). This appears to be a new host record [cf. 35, p. 528; 37, p. 308]. Detailed examination of deformed maize inflorescenes showed the intercellular spaces round the vascular sheath cells, particularly in secondary vascular bundles, to be the primary centres of mycelial development, the hyphae enlarging to form globular, protoplasmic masses, sometimes with thickened walls. Oospores were formed in association with vascular bundles, the closely appressed xylem cells becoming enlarged and distorted, with abnormally pronounced spiral thickening. Irregular thickening of leaf sheath and husk tissues (to double the normal) caused a warty appearance. Up to 15 sporangio-phores could penetrate through 1 stomata, on either leaf surface. Less extensive studies indicated a similar host-parasite relationship in sorghum, wheat, oats, barley, and Digitaria sanguinalis.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Missouri Agricultural experiment station |
| Subjects: | Plant Protection Plant Physiology and Biochemistry > Plant Physiology |
| Divisions: | Sorghum |
| Depositing User: | Library ICRISAT-InfoSAT |
| Date Deposited: | 26 Apr 2012 12:09 |
| Last Modified: | 26 Apr 2012 12:09 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/4969 |
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