
TY  - JOUR
A1  - Walton, GH 
A1  - Francis, CM 
T1  - Genetic influences on the split seed disorder in <I>Lupinus angustifolius</I> L.
JF  - Australian Journal of Agricultural Research
JO  - Aust. J.  Agric. Res.
Y1  - 1975
VL  - 26
IS  - 4
SP  - 641
EP  - 646
KW  - 
UR  - https://doi.org/10.1071/AR9750641 
N2  - During an investigation of the disorder known as split seed in narrow-leafed lupins (L. angustifolius) studies were made on an F2 population from a cross between the 'bitter' cultivar New Zealand Blue and the 'sweet' cultivar Uniwhite. In a situation where the split seed problem occurred, the presence of the gene for low alkaloid (iucundus) in the homozygous state lowered the proportion of normal seeds from 78.5 to 10.9&#37;, and the non-shedding phenotypes (tardus), in the absence of iucundus, showed reduction of normal seed from 81.8&#37; to 62.4&#37;.  Additional experiments with a wider range of genotypes verified the invoivement of the iucundus gene and showed that the Ku gene for earlier flowering could provide a degree of escape from the disorder. The split seed relationship with iucundus and tardus showed differences in expression at one site, which indicated a difference in their mechanism of action at least in the production of severely deformed or shrivelled seed. 
ER  -

