Abstract
The carpels of pearl millet (Pennisetum typhoides) are infected bySclerospora graminicola. Vegetative mycelium present in the diseased mother plant infects the carpel through the stalk of the spikelet. This process may or may not cause hypertrophy. Zoospores infect the carpel through the stimga and style, without inducing hypertrophy. Infection process leading to the establishment of downy mildew mycelium in the carpellary tissue and its implications are discussed.
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Arya H C and Sharma R 1962 On the perpetuation and recurrence of “green ear” disease of bajra (Pennisetum typhoides) caused bySclerospora graminicola (Sacc.) Schroet.;Indian Phytopathol. 15 166–172
Arya H C and Tiwari M M 1970 Amino acid composition of bajra tissues (Pennisetum typhoides Stapf and Hubb.) Schroet.in vivo andin vitro; inPlant disease problems and progress (ed.) S P Raychaudhuri (New Delhi: ICAR) pp. 742–751
Frederiksen R A and Rosenow D T 1967 Downy mildew of sorghum;Proc. 5th biennial grain sorghum research and utilisation conf. 5 5–47
Girard J C 1975 Downy mildew of pearl millet in Senegal;Proc. of the Consultants’ group meetings on downy mildew and ergot of pearl millet (ed.) R J Williams Hyderabad, India: (ICRISAT) pp. 59–73
Johanson D A 1940Plant microtechnique (New York and London: McGraw-Hill)
Jones B L, Leeper J C and Frederiksen R A 1972Sclerospora sorghi on corn and its location in carpellate flowers and mature seeds;Phytopathology 62 817–819
Kaveriappa K M and Safeeulla K M 1978 Seed borne nature ofSclerospora sorghi on sorghum;Proc. Indian Acad. Sci. B87 303–309
Neergaard P 1977Seed pathology Vol. I (Macmillan Press)
Nene Y L and Singh S D 1975 A comprehensive review of downy mildew and ergot of pearl millet; inProc. of the Consultants’ group meetings on downy mildew and ergot of pearl millet; (ed.) R J Williams (Hyderabad, India: ICRISAT) pp. 13–53
Reddy C S 1973 A preliminary study of sporangial population ofSclerospora graminicola in the air over a bajra field;Indian Phytopathol. 26 157–159
Safeeulla K M 1975 Downy mildew of pearl millet; inProc. of the Consultants’ group meetings on downy mildew and ergot of pearl millet (ed.) R J Williams (Hyderabad, India; ICRISAT) pp. 85–97
Safeeulla K M 1976 Biology and control of downy mildews of pearl millet, sorghum and finger millet; Downy Mildew Research Lab., Univ. Mysore, Mysore, India (Final Tech. Report— Project A-7-CR 352, PL-480 grant No. FG-IN-414 (1969–1975) XV+304
Shetty H S, Khanzada A K, Mathur S B and Paul Neergaard 1978 Procedures for detecting seed-borne inoculum ofSclerospora graminicola in pearl millet (Pennisetum typhoides);Seed. Sci. Technol. 6 935–941
Shetty H S, Paul Neergaard, Mathur S B and Safeeulla K M 1980a Variability inSclerospora graminicola and seed-borne nature in pearl millet;Newsletter—International working group on graminaceous downy mildews 2 1, 5–6
Shetty H S, Mathur S D and Neergaard P 1980b Occurrence ofSclerospora graminicola inoculum in pearl millet seeds and its transmission;Trans. Br. Mycol. Soc. 74 127–134
Singh R S, Chaube H S, Khanna R N and Joshi A M 1967 Internally seed-borne nature of two downy mildews on corn;Pl. Dis. Reptr. 51 1010–1012
Singh R S, Joshi A M and Chaube H S 1968 Further evidence of the seed-borne nature of corn downy mildew and their possible control with chemicals;Pl. Dis. Reptr. 52 446–449
Singh S D 1974Studies on downy mildew disease [Sclerospora graminicola (Sacc.)Schroet. of bajra (Pennisetum typhoides (Burm.) Stapf and Hubb.] Thesis (Div. of Mycol. and Pl. Pathol.) IARI, New Delhi, India, p. 126
Singh S D, Thakur R P and Williams R J 1977 Progress in the identification of resistance to downy mildew, ergot smut and rust in pearl millet; Paper presented at International Pearl Millet Workshop, ICRISAT, Hyderabad, India
Sundaram N V, Ramasastry D V and Nayar S K 1973 Note on the seed-borne infection of downy mildew [Sclerospora graminicola (Sacc.) Schroet.] of pearl millet;Indian J. Agric. Sci. 43 215–217
Suryanarayana D 1962 Occurrence of an unknown fungal mycelium inside the sound grains produced on partially formed green ears of bajra plants;Sci. Cult. 28 536
Tiwari M M and Arya H C 1966 Studies on green ear disease of bajra (Pennisetum typhoides Stapf and Hubb.) caused bySclerospora graminicola (Sacc.) Schroet;Indian Phytopathol. 19 125
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Subramanya, S., Safeeulla, K.M. & Shetty, H.S. Carpel infection and establishment of downy mildew mycelium in pearl millet seeds. Proc. Indian Acad. Sci. 90, 99–106 (1981). https://doi.org/10.1007/BF03167733
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DOI: https://doi.org/10.1007/BF03167733