
%0 Journal Article
%A Pritchard, AJ 
%T The cytology and reproduction of <I>Paspalum yaguaronense</I> (Henr)
%J Australian Journal of Agricultural Research
%D 1962/04/01
%V 13
%N 2
%P 206-211
%K 
%R https://doi.org/10.1071/AR9620206
%U https://www.publish.csiro.au/paper/AR9620206 
%X A high degree of sterility occurs in an introduction of Paspalum yaguaronense. Cytological and embryological studies have shown that the chromosome number is 2n = 20, and that the embryo sac develops normally. Sterility is due to an incompatibility system which prevents the growth of pollen tubes into the style. A self-fertile selection has been made in which fertilization occurs 4 hr after anthesis. Fertility probably arose by mutation of an incompatibility allele. The sterile plants will readily produce seed when pollinated by clones of the fertile plant. Because P. yaguaronense possesses a sexual method of reproduction and an incompatibility system, it could be useful in future breeding work within the genus Paspalum, which contains a number of apomictic species. 
