New Zealand Journal of Botany abstract

New reports of chromosome numbers in Actinidia (Actinidiaceae)

G. YAN

School of Biological Sciences
The University of Auckland
Private Bag 92 019
Auckland, New Zealand

J. YAO
A. R. FERGUSON
M. A. MCNEILAGE
A. G. SEAL

Horticulture and Food Research Institute of New Zealand
Private Bag 92 169
Auckland, New Zealand

B. G. MURRAY

School of Biological Sciences
The University of Auckland
Private Bag 92 019
Auckland, New Zealand
Author for correspondence

Abstract  Chromosome numbers are reported for the first time for seven taxa of Actinidia: A. arguta var. purpurea, 2n = 8x = c. 232; A. deliciosa var. chlorocarpa, 2n = 6x = 174; A. deliciosa var. coloris, 2n = 6x = 174; A. glaucophylla, 2n = 2x = 58; A. guilinensis, 2n = 2x = 58; A. indochinensis, 2n = 2x = 58 and A. setosa 2n = 2x = 58. Ploidy variation has also been observed in A. melanandra and confirmed in A. chinensis var. chinensis: 2n = 2x = 58 and 2n = 4x = 116. Chromosome numbers for another 11 Actinidia taxa were found to be in agreement with those previously reported. Chromosome numbers were the same for male and female plants of the same taxon. Detailed studies of chromosome morphology was not possible under the light microscope because of the small size of Actinidia chromosomes.

Keywords  Actinidia; chromosome numbers; polyploidy; kiwifruit

B96060

Received 30 September 1996; accepted 10 March 1997

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