Basic chromosome numbers and polyploid levels in some South African and Australian grasses (Poaceae)

Basic chromosome numbers and polyploid levels in some South African and Australian grasses (Poaceae)

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Chromosome numbers of 46 specimens of grasses, involving 24 taxa from South Africa and Australia, have been determined during the present study.For the 4 post backdrop stand first time chromosome numbers are given for Eragrostis sarmentosa (Thunb.) Trin.

(n = 20).Panicum aequinerve Nees (n = 18), Digitaria argyrograpta (Nees) Stapf (n = 9) and D.maitlandii Stapf & C.

E.Hubb.(n = 9).

Additional polyploid levels are described for Diplachne fusca (L.) Beauv.ex Roem.

& Schult.(n = 10) and Digitaria diagonalis (Nees) Stapf var.diagonalis (n = 9).

B-chromosomes were observed in several different specimens.The off white 5000 puffs presence of B-chromosomes often results in abnormal chromosomal behaviour during meiosis.