
%0 Journal Article
%A Gross, CL 
%T The Breeding Systems of Three Cooccurring Legumes: <I>Dillwynia hispida, Dillwynia uncinata</I> and <I>Pultenaea densifolia</I> (Leguminosae, Papilionoideae)
%J Australian Journal of Botany
%D 1990/04/01
%V 38
%N 2
%P 207-215
%K 
%R https://doi.org/10.1071/BT9900207
%U https://www.publish.csiro.au/paper/BT9900207 
%X The breeding systems of Dillwynia hispida Lindley, D. uncinata (Turcz.) J. Black and Pultenaea densifolia F. Muell. were determined using glasshouse trials and field experiments. Each species is self-incompatible and thus relies on pollen vectors to effect seed-set. Calculations of pollen-ovule ratios are compatible with this conclusion. Increase in the age of pollen led to a decline in fruit-set, which was more pronounced in Dillwynia uncinata than D. hispida or P. densifolia. In this study, Pultenaea densifolia pollen was never more than 60% viable which may explain the extremely high pollen-ovule ratio of this species. In all three species, esterase production on stigmas implied that they were fully receptive by day 3 of flowering. Stigma morphologies were assessed by scanning electron microscopy and the results used to discuss their incompatibility mechanisms. 
