Abstract

                                CORH 2 a medium duration rice hybrid was developed by three line breeding system using cytoplasmic genic male sterile line (CMS), maintainer line and restoter line (A/B/R) and tested as TNRH 16. The parentage of this hybrid is IR 58025A/C20R. This hybrid has a duration of 125 days, grows upto a height of 95 cm, with high tillering ability of 15 productive tillers per hill. The average grain number is 230 per panicle and 1000 grain weight is 24 g. The grain size is medium and rice is white in colour. It is suitable for July-October sowing in Tamil Nadu. It also comes up well in saline and alkaline soils. On an average it yields 6071 kg/ha which is 20.5 per cent increase over the check variety ADT 39.

Key words : Cytoplasmic Genic Male Sterile line, Rice, CORH 2, Hybrid