© 1995 Oxford University Press
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Polyethylene glycol improves the in vitro growth of Brassica pollen tubes without loss in germination
1Department of Botany, University of Delhi Delhi 110007, India
2Department of Biology, University of Saskatchewan 112 Science Place, Saskatoon, SK. S7N 5E2, Canada
3 To whom correspondence should be addressed. Fax: +1 306966 4461
The culture media for the in vitro pollen assay of Brassica species have so far shown good percentage germination, but limited pollen tube growth. It is reported here that by lowering sucrose concentration from 20% to 5 or 10 % and by adding polyethylene glycol 4000 in the culture medium, high percentage germination and high tube growth (10 times that in the standard media) can be achieved in three species of cultivated Brassica. This improved medium should be useful in fundamental and applied studies on the pollen biology of Brassica species.
Key words: Brassica, pollen, pollen germination, pollen tube growth, polyethylene glycol
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