
TY  - JOUR
A1  - Gross, CL 
T1  - The Breeding Systems of Three Cooccurring Legumes: <I>Dillwynia hispida, Dillwynia uncinata</I> and <I>Pultenaea densifolia</I> (Leguminosae, Papilionoideae)
JF  - Australian Journal of Botany
JO  - Aust. J. Bot.
Y1  - 1990
VL  - 38
IS  - 2
SP  - 207
EP  - 215
KW  - 
UR  - https://doi.org/10.1071/BT9900207 
N2  - 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. 
ER  -

