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SOMATIC CHROMOSOME NUMBERS OF SOME AFRICAN SAPOTACEAE
Author(s) -
Arends J. C.
Publication year - 1976
Publication title -
acta botanica neerlandica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.871
H-Index - 87
eISSN - 1438-8677
pISSN - 0044-5983
DOI - 10.1111/j.1438-8677.1976.tb01080.x
Subject(s) - sapotaceae , polyploid , somatic cell , chromosome number , biology , chromosome , ploidy , botany , genetics , karyotype , gene
SUMMARY Somatic chromosome numbers of nineteen species of African Sapotaceae have been determined. Species of the genera Pachystela, Donella, Gambeya and Omphalocarpum have 2n = 28, those of Synsepalum (except for the polyploid species S. subcordatum , 2n = 112), Tridesmostemon, Autranella, Tieghemella have 2n = 26, whereas Baillonella toxisperma has 2n = 24 chromosomes. It is concluded that 2n = 28 presents the most primitive number, whereas 2n = 26 and 2n = 24, like the polyploid numbers, are secundary.