Karyotype of Purple Rice Chromosome

Abstract

Chromosome karyotypes investigated in five rice varieties grouped as“ white rice” (Sanpatong and Mali 105) and“ purple rice” (Doisaket, CMU col.2 and CMU col.3) shows an equal chromosome number of 2n = 24 Chromosome size and characteristic were specific and varied among the varieties. The“ purple rice” obtained larger size of chromosomes than those of the“ white rice”. Metacentric and submetacentric chromosomes represent general morphological characteristics. Only Mali 105's chromosomes could be classified as subtelocentric, indicating that the variety is typically more cultivated than the others which still rather be the“ wild type”. Telocentric chromosome could not be detected in the investigated varieties. The“ purple rice” group shows less consistent karyotype characteristics than the“ white rice” group. SAT-chromosome was found in Mali 105 and CMU col.2.