Studies on the Karyotypes and Pollen Morphology of Brassica oleracea L.and B. alboglabra Bailey

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Studies on the Karyotypes and Pollen Morphology of Brassica oleracea L.and B. alboglabra Bailey

Yang Ping, Li Rong-Qian, Zeng Zi-Shen

(Department of Biology, Wuhan University, Wuhan)

Received:1900-01-01 Revised:1900-01-01 Online:1988-10-18 Published:1988-10-18
Contact: Yang Ping

Abstract

Abstract:

The karyotypes and pollen morphology of Brassica oleracea L. and B. alboglabra

Bailey were studied by preparing mitotic chromosome specimens and scanning electron micro-

scope. The results are as follows: 1. the karyotypes of the 4 varieties in B. oleracea L. and of

B. alboglabra Bailey are similar, all with the same chromosome number (2n=18) satellite

number (one pair) and a type of karyotype, but different in respect to satellite position and

karyotype symmetry 2. The pollengrains of 2 varieties of B. oleracea L. are 3-colporate and

reticulate, distinctly different from those in B. alboglabra, which are pantoporate with smaller

lumina.

Based on the results we tend to regard that B. alboglabra Bailey is an independent species.

Key words: Brassica oleracea L., B.alboglabra Bailey, Karyotype, Pollen morphology

Yang Ping, Li Rong-Qian, Zeng Zi-Shen. Studies on the Karyotypes and Pollen Morphology of Brassica oleracea L.and B. alboglabra Bailey[J]. .

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Studies on the Karyotypes and Pollen Morphology of Brassica oleracea L.and B. alboglabra Bailey

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