Identical S Alleles in Different Botanical Varieties of Brassica oleracea

Nature ◽  
1965 ◽  
Vol 208 (5007) ◽  
pp. 306-307 ◽  
Author(s):  
K. F. THOMPSON ◽  
J. P. TAYLOR
Keyword(s):  
Brassica Oleracea ◽  
S Alleles ◽  
Botanical Varieties

scholarly journals Utility of BoCAL-a and BoAP1-a Genotypes in Identifying Broccoli and Cauliflower Accessions

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 773C-773
Author(s):  
Joanne A. Labate ◽  
Larry D. Robertson ◽  
Thomas Bjorkman*
Keyword(s):  
Brassica Oleracea ◽  
Phenotypic Variation ◽  
Genetic Basis ◽  
Intermediate Phenotype ◽  
Flower Buds ◽  
Stable Intermediate ◽  
Floral Differentiation ◽  
Combined Genotypes ◽  
Botanical Varieties

Broccoli and cauliflower are different botanical varieties of Brassica oleracea. Mutant alleles at the loci BoCAL and BoAP1 can cause arrest at curding that is characteristic of cauliflower. These genes control early floral differentiation, necessary for the progression from a cauliflower-like inflorescence to the flower buds of broccoli. To what extent is the cauliflower-to-broccoli variation within the USDA-PGRU collection determined by mutant alleles of these genes? We surveyed the broccoli collection to examine the correlation between genotype and phenotype. Earlier work showed that BoCAL alone was not an effective predictor of cauliflower phenotype in this collection. The redundant function of BoCAL and BoAP1 in determining inflorescence arrest raises the possibilty that the combined genotype can explain the phenotypic variation. We found that not to be the case. Two accessions varied in phenotype and segregated at both loci, but the combined genotypes were not associated with the expected phenotypes. Two additional accesssion varied in phenotype and segregated at one locus, but with no association between genotype and phenotype. One line varying widely in phenotype was fixed for both loci. One line that was a stable intermediate phenotype segregated for BoCAL. A commercial broccoli cultivar had the cauliflower allele at both loci. The genetic basis of the cauliflower phenotype in the USDA B. oleracea collection is due more to alleles of genes affecting the expression of BoAP1 adn BoCAL than to variation in these alleles of the genes themselves.

scholarly journals Genotype, protein, phenotype relationships in self-incompatibility of Brassica

1972 ◽  
Vol 20 (2) ◽  
pp. 151-160 ◽  
Author(s):  
M. E. Nasrallah ◽  
D. H. Wallace ◽  
R. M. Savo
Keyword(s):  
Brassica Oleracea ◽  
Phenotypic Expression ◽  
Self Incompatibility ◽  
Disk Electrophoresis ◽  
S Alleles ◽  
S Allele ◽  
Exact Correlation

SUMMARYThe inheritance of self-incompatibility proteins was studied in three homozygous self-incompatible genotypes of Brassica oleracea var. capitata and their F1 and F2 progenies. The presence or absence in the stigma of incompatibility proteins was determined by immunodiffusion and independently by disk electrophoresis. Certain proteins (antigens) were present in F1 and F2 plants in exact correlation with segregation of the S alleles as determined by phenotypic expression of incompatibility. An S allele–protein–phenotype relationship was thus verified.

Linkage between S alleles and pigmentation genes in marrow-stem kale, brassica oleracea

Euphytica ◽  
1965 ◽  
Vol 14 (3) ◽  
pp. 285-292 ◽  
Author(s):  
K. F. Thompson ◽  
J. P. Taylor
Keyword(s):  
Brassica Oleracea ◽  
S Alleles
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