Intervarietal Differences in Karyotype of Tea

抄録

Detailed karyotype analyses of 6 cultivars of tea vegetative clones are done. On the basis of centromere position, chromosomes are classified into 6 types. Number of different types varied within the varieties. Both ‘E’ and ‘F’ type are absent in TS 491. Total genomic length and volume are also considered as the parameters. Singnificant variation is observed at the varietal level. TV₂₁, a quality clone, is found quite indifferent in karyotype, total length and volume of the chromosomes. The other characteristic features of this variety is also different from the rest of varieties. The overall study reveals a clear varietal demarcation.