ISSN:
1432-2048
Keywords:
Acacia
;
Nucellus
;
Ovule
;
Pollen tube arrest
;
Sell-incompatibility
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract In self-incompatible Acacia retinodes Schldl. var. uncifolia J.M. Black there is no inhibition of self pollen tubes before entry into the ovule, but the frequency of fertilized embryo sacs observed after self pollination is only 0.09–0.24 of that observed after outcrossing. Fluorescence- and light-microscope studies of sectioned, squashed or cleared whole ovules indicate that most self pollen tubes are arrested within the first or second layer of cells of the nucellus. The probability that nucellar arrest represents a primitive feature of self-incompatibility is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00392321
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