J Syst Evol ›› 1989, Vol. 27 ›› Issue (4): 265-267.

• Research Articles • Previous Articles     Next Articles

Karyotype Analysis of Hydrilla

Jiang Shu‐Ting, Seng Chu‐Reng   

  • Published:1989-07-10

Abstract: The present paper reports the chromosome number and karyotype of the genus Hydrilla. H. verticillate was found to have 2n=16. The karyotype is 2n=16=6m+6sm+ 4st. No difference between the male and the female was found in the work. H. verticillata var. roxburghii Casp. has the somatic chromosome number 2n=24, and its karyotype is 2n= 3x=24=9m+9sm+6st. The variety may be a autotriploid. The karyotype of the genus isobviously bimodal, with No. 1-5 in the first group and 6-8 in the second group.

Key words: Hydrilla verticillata, H.verticillata var.roxburghii, Karyotype