L. E. Morris
Articles written in Journal of Genetics
Volume 33 Issue 3 December 1936 pp 435-441
Diploid pollen, with 19 chromosomes, from the
The sterility of the
Volume 34 Issue 2 May 1937 pp 275-286
Pollinating radish (
By open pollination the triploid hybrid gave a varied progeny including two hexaploid plants with 2
In open pollination the functional egg-cells were chiefly triploid, but some had 9 chromosomes, and were genetically similar to those of radish.
The pollen of the triploid, like the egg-cells, showed a wide range from 9 chromosomes probably up to triploid. Used on radish, however, it was chiefly that with 9 chromosomes, similar to those of radish, that gave progeny, though some 10 chromosome pollen also was functional. Thus, apparently, triploid pollen was functional on the triploid but not on radish, probably owing to the chromosome ratio between pollen and stigma.
From the back-cross to radish a plant with a single extra turnip chromosome appeared to be identical with radish except for its reduced fertility.
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