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Pollen competition in onion (Allium cepaL.)

โœ Scribed by Lesley Currah

Book ID
104617603
Publisher
Springer
Year
1981
Tongue
English
Weight
698 KB
Volume
30
Category
Article
ISSN
0014-2336

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โœฆ Synopsis

Pollen mixtures

with two components, one of which carried a dominant marker gene for red or white bulb skin colour, were used to pollinate flowers on onion umbels from several cultivars.

Scoring progenies for the marker revealed that pollen components differed in their ability to effect fertilization, suggesting that gametophytic competition can occur in onions. In many cases, self-pollen appeared to have a competitive advantage over cross-pollen. Both of the male components and the female parent played a part in determining the final ratio obtained from a mixed pollination. Crossed seeds were slightly but significantly heavier than selfed seeds in nine out of ten umbels studied.

๐Ÿ“œ SIMILAR VOLUMES

Variation in pollen viability in the oni
Variation in pollen viability in the onion (Allium cepaL.)
โœ D. J. Ockendon; P. J. Gates ๐Ÿ“‚ Article ๐Ÿ“… 1976 ๐Ÿ› Springer ๐ŸŒ English โš– 398 KB

The pollen viability of onions in a glasshouse was recorded from May to October 1975, using the fluorescein test. The average viability was 60-95 % for most of this period but fell to less than 1% during the last two weeks of August. There was great variation in pollen viability between anthers with