Strategy of F1 Hybrid Rice Seed Production through CMS Breeding Technology

It is a major problem of emerging the inflorescence from the first leaf of this crop which is managed by spraying GA3 plant hormone in different concentrations. GA3 is a costly chemical which is a matter of problem to afford by the middle class farmers as well as margin farmers. It would be helpful to the rice breeders as well as scientific community if we could explore the alternative low cost chemicals instead of GA3 to fulfill the purpose of this breeding technology. Different doses of chemical viz. GA3, penicillin, Sulfonamide, and gentamicin were applied as foliar spay during flowering times in three phases. This practice for producing F1 seeds from the A-line and R-line were done in both the seasons i.e. (i) winter-summer-boro and (ii) kharif seasons. The produced F1 seeds as well as R-line seeds were measured in various agronomic parameters for assessing the seasonal variations over the same location. Fourteen metrical wereobserved and recorded properly for biometrical calculations. Correlation matrix model (1) was followed for determining the metrical traits of cultivars studied. The main aims and objectives ofthis experiment were to assess the effectiveness of different chemicals for emerging out the inflorescence of ‘A’ line parent cultivar of the experiment.

کلیدواژه ها:

Alternative chemicals ، CMS breeding ، Explore