Efficiency of anther culture in paddy rice [Oryza sativa L.] breeding aiming at the improvement of eating quality
1990
Tsuchiya, T. (Hiroshima-ken. Agricultural Experiment Station, Higashihiroshima (Japan))
There is few chance of recombination in haploid method of breeding using anther culture, because this technique utilizes F1 or F2 plants. The existence of linkage among the genes controlling eating quality or between these genes and those controlling regeneration will reduce the efficiency of breeding for better eating quality. The objective of this study is to examine the degree of linkage mentioned above. The genetic variation of rice plants regenerated from F2 plants of Mineasahi/Norin No.22 by anther culture were examined. The analysis of taste (texture) and stack quality (amylogram) using the special apparatuses showed that these characteristics of the regenerated rice plants had almost the same diversity with those of the midparent. These results suggest that eating quality is controlled by many genes and the degree of linkage among the genes controlling eating quality, or between these genes and those controlling regenerations low. Therefore, haploid method of breeding utilizing anther culture has the possibility to be an efficient method for paddy rice breeding
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