S L Sharma
Articles written in Proceedings – Section B
Volume 26 Issue 2 August 1947 pp 13-31
Volume 26 Issue 5 November 1947 pp 173-173 Erratum
Volume 29 Issue 2 February 1949 pp 23-34
Volume 29 Issue 2 February 1949 pp 35-47
Volume 30 Issue 6 December 1949 pp 307-315
Number of Silica cells per unit area in the lower epidermis of leaf midribs of thirteen varieties of sugarcane, covering a wide range of hardness of leaf midribs was noted. P.O.J. 2725,
Silica cells were found to have no consistent association either with the weight required to puncture the midrib on its convex side or with the thickness of the outer cell wails, both the correlation coefficients being too tow to be significant even at 10%, level.
The range of the thickness of outer walls of long cells in the epidermis as expressed in the divisions of the eye-piece micrometer was from 14·5 in
The varietal differences were significant at 5% level.
Weights required to puncture a midrib varied from 598 gm. in
The correlation coefficient between this character and the thickness of cell walls was found to be + 0·6377 which was significant at the same level.
The thickness of outer wall of long cells of lower epidermis could, therefore, be used as a fairly reliable indicator of the puncture-weight and, therefore, of the hardness of a leaf midrib.
The erratic behaviour of four varieties, namely Co 285, P.O.J. 2725,
Volume 31 Issue 1 January 1950 pp 1-33
Volume 41 Issue 1 January 1955 pp 16-19
Volume 41 Issue 2 February 1955 pp 74-78
The non-genitical nature of bud-abnormalities of various types has been universally admitted except in one case reported by Jeswiet in which triple buds persisted in a clone even after vegetative propagation for 4 years. Their occurrence is ascribed to hormones, minor elements or diminished apical dominance by different workers.
Out of 69 stalks belonging to 24 varieties with multiple buds, several had insect injury in immediate neighbourhood while in many others no outward manifestation of any disturbance was descernible. Greater number of stalks found in one variety than in the other, indicates a varietal propensity towards such malformations.
In 8 cases beloging to 5 varieties, occarance of multiple bud was found associated with curvature in that portion of the stalks while in 3 of these and 7 others such buds were formed on alternate nodes.
Geotropic disturbance of stalk is discussed as a plausible explanation to account fir these observed facts.
Volume 42 Issue 3 September 1955 pp 123-127
Volume 42 Issue 5 November 1955 pp 195-208
Volume 43 Issue 1 January 1956 pp 67-71
Volume 45 Issue 1 January 1957 pp 16-20
Volume 46 Issue 2 August 1957 pp 126-130
It might, therefore, be stated that the rust on
Volume 46 Issue 6 December 1957 pp 391-402
1. Rind hardness was measured for five varieties from 100 selected stalks in 1949–50 and for three varieties from all millable cane within 1/40th of an acre in 1950–51.
3. The size of sample by the first method would be 25, 100 and 500 well-developed stalks, the best of a clump, to estimate this character within margin of 5%, 21/2% and 1% error of the mean. For the second method, the number of observations required would be 50, 250 and 1,250 taken from the four hierarchies according to a certain plan.
4. All measurements should be done on the side opposite the bud at the mid-point of middle internodes.
Volume 47 Issue 1 January 1958 pp 1-14
1. The latest findings about the disease as regards its symptoms and causal agent are summarised.
2. Observations made on 26 varieties in 8 factory reserved areas and Research Farms at Pusa and Patna in February–March 1955 showed that its two main symptoms, namely the discoloration of vascular bundles at nodes and the reduction in length of stalks without a corresponding decrease in their girth, were generally absent.
3. Experimental work with the stunted material of six varieties showed that (
5. It may, therefore, be stated for the present that there is little likelihood of the disease being present in the State. Careful watch, however, is beeing maintained.