Breeding and Application of New Tropical Hybrid Rice Combination SIRAJ with High Yield and Fine Quality

SIRAJ,derived from SIRAJ-A(CMS line) and SIRAJ-R(restorer line),both of which are developed by the RB Biotech Sdn.Bhd.,Malaysia,is a new hybrid rice variety for tropical areas.It is characteristic of fine grain quality,high yield,strong disease resistance and suitable maturity for the tropics.In March,2010,it was certified and released to commercial production in Malaysia and became the first hybrid rice variety registered locally in Malaysia.In the paper,the breeding procedure,main characteristics and techniques for high-yielding cultivation and hybrid seed production of SIRAJ were related in detail.