Improvement of Co 25 Rice.

P. NARAYANASWAMY; A. SUBRAMANIAM; C. L. SUBRAMANIAM

doi:https://doi.org/10.29321/MAJ.10.A03441

Madras Agricultural Journal

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Improvement of Co 25 Rice.

Author: P. NARAYANASWAMY, A. SUBRAMANIAM, C. L. SUBRAMANIAM,

p-ISSN: 0024-9602, e-ISSN:2582-5321, Vol: 61, Issue: oct-dec,

DOI:https://doi.org/10.29321/MAJ.10.A03441

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Abstract

The popular tall indica long duration blast resistant rice variety Co 25 was crossed with IR 8 in 1969 to combine yield potential and plant type of IR. 8 and lateness and blast resistance of Co 25. Six selections confirming to these objectives evaluated at F3 goneration were tested for their yield potential in Kharif, 1973. The most promising selection among them viz., 5142 was advanced to trials at ryots holdings. In another set of 10 promising selections that are under evalua. tion for their yield potential and suitability to Samba season (July-August to January-February) Cult. 1353 and 13493 appear promising from their desirable yield components and duration.

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