Anther culture has been demonstrated to be an effective and efficient way for rice breeding. Through rice anther culture several kinds of ploidy plants can be obtained, such as haploid, diploid, polyploid and usually based on the morphology to distinguish their ploidy during maturity. Nonetheless, the chromosome numbers of these haploids must be doubled before its application in rice breeding. The present study comparatively identified the chromosome doubling effectiveness of an antimicrotuble herbicide cal...