New Zealand Journal of Botany abstracts

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Chromosomal Stability in Natural and Induced Tetraploid Dactylis

Elizabeth Williams
P. C. Barclay

Grasslands Division, Department of Scientific and Industrial Research, Palmerston North

Abstract The production of tetraploid hybrids from reciprocal crosses between colchicine-induced autotetraploid plants of Dactylis glomerata ssp. lusitanica Stebb. et Zoh. (2n=28) and natural tetraploid D. glomerata ssp. glomerata Hayek (2n=28), has been described by Williams and Barclay (1968). These allotetraploids had varying numbers of B-chromosomes which were associated with deleterious effects on vigor and fertility (Williams and Barclay, 1968), and which were increased in male transmission by non-disjunction and preferential segregation at first pollen mitosis (Williams and Barclay, 1972).

Received 21 February 1972
New Zealand Journal of Botany 10: 711-4

PDF file of entire paper: medium quality (116K); (scanned from paper original: notes about this process)

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