Abstract:

To improve the breeding efficiency of rice varieties with high quality and taste, the selection and combination were conducted according to the principle of resource classification, characters complementation and target characters recombination. The key traits were selected by multiple cross, back cross, haploid culture, increasing generation in Hainan. We proposed the methods of identifying and screening excellent resources, increasing the number of combinations, selecting excellent combinations from lower generations and detecting the appearance quality of rice; for higher generation, detecting quality and taste by machine and selecting excellent strains; for stable generation, evaluating the taste artificially on the basis of measuring the quality of rice. The selection and breeding methods of stress selection, adversity selection and orientation selection were adopted for the target traits to select and breed high-quality and excellent taste rice varieties. Since 2010, 17 varieties have been selected and bred by this method and passed variety certification at or above the provincial level, among which, 5 varieties were of high quality, 4 varieties were awarded with the national good taste variety prize, 3 varieties won the second and third prize of the provincial science and technology progress. The paper also puts forward suggestions on the breeding of high quality and good taste rice varieties in the future.

Key words: Rice, Rice Quality, Character, Excellent Taste, High Quality, Selecting and Breeding Method, Directional Selection