cover image: Memoirs of the Department of Agriculture in India. Platyedra Gossypiella.  Cephaleuros Virescens  Kunze The ‘Red Rust’ of Tea

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Memoirs of the Department of Agriculture in India. Platyedra Gossypiella. Cephaleuros Virescens Kunze The ‘Red Rust’ of Tea

1907

It was the recognition of the widespread distribution of the blight in serious amount which led to the detailed investigations of the life history and habits of growth of the alga with special reference to the conditions favourable to its development reproduction and distribution described in the present paper. [...] The importance of the form of Cephaleuros virescens occurring on the leaf from an economic point of view lies solely in the fact that it is one of the sources of infection of the stems by the detructive entophytic form on the stem. [...] The natural reaction of the shoot tisues to this irritation is the death of the cells in the neighbourhood of the latter. [...] We have hitherto spoken of the epiphyllous form of Cephaleros virescens occurring on the leaf and the entophytic form growing on the stem but its extreme adaptability is shown by the * The constant presence of chlorophyll in the deep seated cells of the parasitic form of Cephaleuros virescens coupled with its absence or at any rate its masking by hazmatochrom in the cells in the surface gro [...] As the seed ripens the algal cells are found penetrating the supeficial layers and taking on the characters of the cortical stem form and as lignification of the tissues proceeds a corresponing change takes place in the method of growth of the parasite which is then found forcing its way among the cells along the lines of least resistance more or less parallel to the surface.
agriculture environment
Pages
49
Published in
India
SARF Document ID
sarf.141955
Segment Pages Author Actions
Frontmatter
i-iv Harold H. Mann, C. M. Hutchinson view
I. Historical
1-6 unknown view
II. The General Effect of Cephaleuros Virescens on the Tea Plant
7-9 unknown view
III. Description and Life History of Cephaleuros Virescens as Occurring on Tea Leaves
10-13 unknown view
IV. Description and Life History of Cephaleuros Virescens as Occurring on the Tea Stems
14-27 unknown view
V. Practical Treatment of the Blight
28-33 unknown view
VI.—Conclusion
34-34 unknown view
Bibliography
i-xi unknown view

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