Mehta, P.R and Babu, S. and Mathur, S.C. (1952) A New Leaf Spot Disease of Bajra (Pennisetum Typhoides Stapf and Hubbard) Caused By a Species of Piricularia. Indian PhytoPathology, 5 (2). pp. 140-143.
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Abstract
A new leaf spot disease of Pennisetum typhoides [Pennisetum glaucum] was observed in August and September, 1952, at the Government Research Farm, Kanpur, on inbred lines of the crop. Some lines were severely affected, with large lesions causing extensive damage. A species of Piricularia was isolated; this and an isolate [of P. oryzae: cf. R.A.M., 27, p. 581; 33, p. 112] from paddy rice were used for cross-inoculation experiments. The disease appeared within four to six days on over 80 per cent. of Pennisetum typhoides [Pennisetum glaucum] plants inoculated with the bajra isolate, first on the lower leaves as small, brown spots. These enlarged into dark brown, circular spots, 0.2 to 0.6 cm., sometimes 1 cm. in diameter, occasionally coalescing into elongated, irregular lesions. Concentric rings in varying shades of brown developed on the lesions, distinguishing this disease from other leaf spots of this host. Isolates from P. typhoides did not infect rice, nor did Piricularia oryzae [Magnaporthe grisea] attack bajra and this, together with a difference in width of the conidia and the fact that the apical cell of the bajra isolate is longer and more tapering than that of the rice isolate, suggests that the fungus on P. typhoides may be a new species.
| Item Type: | Article |
|---|---|
| Author Affiliation: | Goverment U.P., Kanpur |
| Subjects: | Plant Protection |
| Divisions: | Millet |
| Depositing User: | Library ICRISAT-InfoSAT |
| Date Deposited: | 28 Mar 2012 11:32 |
| Last Modified: | 28 Mar 2012 11:32 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/4317 |
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