Meiotic Chromosome Behavior and Pollen Fertility of a Triploid Hop1
- Alfred Haunold2
In triploid Humulus lupulus L., metaphase I cells had a mean of 3.46 trivalents, 6.47 bivalents, and 6.67 univalents/pollen mother cell. Chromosome distribution at anaphase I was irregular, and 1/3 of the cells had laggards. About half of the quartets had one or two micronuclei, but rarely three. Diploid females pollinated from the triploid male produced less than 1/4 the number of seeds/cone, as the open-pollinated diploid control, even though most of the pollen grains from the triploid appeared well-filled. Diploid flowers hand-pollinated from the triploid male developed into distinctly larger cones than did adjacent nonpollinated flowers on the same plant.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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