K M Safeeulla
Articles written in Proceedings – Plant Sciences
Volume 87 Issue 11 November 1978 pp 303-308
The inflorescence and mature seeds of sorghum plants infected by
Volume 88 Issue 1 January 1979 pp 19-24
Downy mildew infected ragi plants exhibits a wide range of symptoms. Histopathological studies of the diseased plant have revealed that the fungus mycelium is present in root, stem, floral parts and seed causing morphological and anatomical changes. The mycelium develops profusely in the sub-stomatal spaces and from this the sporangiophores emerge through the stomata. In the leaf tissue invaded by the fungus, the chloroplasts and leucoplasts are either few or absent. Cells of the mesophyll in the case of the diseased leaves are distorted. Sometimes, the cells of the invaded tissue dissolve and the mycelium or sex organs occupy the space thus created. In the leaf tissue, the intercellular spaces surrounding the vascular sheaths are the primary centres of mycelial development. The sex organs are mostly confined to the vicinity of the vascular bundles. In the infected leaf, very few epidermal hairs are developed.
Volume 88 Issue 6 November 1979 pp 479-486
Preheating and heated teliospore extracts have been found to be stimulatory to germination of the teliospores of ten different smut fungi used in this study. The effect is mostly on the percentage of germination.
Maximum per cent of spore germination was observed at higher concentrations of glucose and sucrose solutions. The percentage of germination of spores of the species included was more in sucrose than in glucose. Most of the vitamins of B-complex groups stimulated the initiation of germ tube.
Many of the growth regulators tried, except 2,4-dichlorophenoxy acetic acid have a stimulatory effect on teliospore germination. Higher percentage of teliospore germination was noticed in the case of gibberellic acid, followed by indole 3-acetic acid, beta-indole butyric acid and alphanaphthalene acetic acid.
Ethylenediamine tetraacetic acid, furfural, fumaric acid, oxalic acid and citric acid were also stimulatory, in that order.
Volume 89 Issue 2 March 1980 pp 131-138
Volume 90 Issue 1 February 1981 pp 45-51
Volume 90 Issue 2 April 1981 pp 99-106
The carpels of pearl millet (
Volume 90 Issue 5 October 1981 pp 465-470
Age of sorghum plants is important in the development of downy mildew disease incited by
Volume 91 Issue 4 August 1982 pp 303-308
In the present study an attempt has been made to establish the fate of sporangia of
Volume 91 Issue 5 October 1982 pp 427-431
Ridge gourd pollen has a stimulatory effect on the germination of
Volume 100 Issue 2 April 1990 pp 113-116
Volume 100 Issue 2 April 1990 pp 117-122
Volume 100 Issue 4 August 1990 pp 255-258
The alkali maceration technique was used to detect the seedborne nature of
Volume 100 Issue 6 December 1990 pp 369-373
The entry of