J Syst Evol ›› 1986, Vol. 24 ›› Issue (5): 370-375.

• Research Articles • Previous Articles     Next Articles

Chromosome Numbers and Karyotype Analysis of 9 Species in Hydrocharitaceae

Wang Ning-Zhu   

  1. (Wuhan Institute of Botany Acadimia Sinica, Wuchang)
  • Published:1986-10-18

Abstract: The present paper reports the chromosome numbers and karyotypes in 9 species of 5 genera from China. It is found that all these analysed species are diploid. The karyotypes of most species are made of m and sm and of a few of st chromosomes. These are grouped into four types, 1A, 2A and 1B, 2B. Blyxa is the most primitive, and Hydrilla is the most advanced.

Key words: Hydrocharitaceae, Blyxa, Hydrilla, Ottelia, Vallisneria, Hydrocharis, Chromosome