
TY  - JOUR
A1  - Thurling, N 
A1  - Das, VLD 
A1  - Vijendra, Das LD 
T1  - Genetic control of the pre-anthesis development of spring rape (<I>Brassica napus</I> L.). II.* Identification of individual genes controlling developmental pattern
JF  - Australian Journal of Agricultural Research
JO  - Aust. J.  Agric. Res.
Y1  - 1979
VL  - 30
IS  - 2
SP  - 261
EP  - 271
KW  - 
UR  - https://doi.org/10.1071/AR9790261 
N2  - Controlled environment studies of variation in the duration of the vegetative phase of spring rape were conducted with the objective of detecting major genes determining vernalization response. These studies involved analyses of variation within early generation segregating populations and between inbred-backcross lines. Distributions of unvernalized F2 plants from crosses between Target, Bronowski, and Isuzu were clearly bimodal when grown under continuous light at 25&#176;C. Duplicate recessive genes were found to determine the vernalization requirement of Bronowski. In Isuzu, however, the vernalization requirement was determined by two independent genes, one having a markedly greater effect than the other on vernalization response. The genes in Bronowski occurred at different loci from those in Isuzu, and Target, which had no vernalization requirement, possessed the dominant alleles of all four genes. Plants having a significantly shorter vegetative phase than Target were also detected in F2 and backcross populations of crosses between Target and the other two cultivars. Analyses of the distribution of inbred-backcross lines showed that this character was determined by genes from Isuzu and Bronowski which were not expressed when associated with the parental genotype.   ______________________ *Part I, Aust. J. Agric. Res., 30: 251 (1979). 
ER  -

