1. Genetic and physiological analysis of induced late mutants ofarabidopsis thaliana (l.) heynh
- Author
-
Marta Větřilová
- Subjects
Genetics ,Mutant ,Positive reaction ,Plant Science ,Horticulture ,Biology ,law.invention ,law ,Genotype ,Suppressor ,Epistasis ,Cultivar ,Allele ,Gene - Abstract
Using four independent late mutants, obtained by treatment of the early cultivar Dijon-G with N-methyl-N-nitrosourea, it was found that their delayed flowering has a monogenic genetic basis, the mutant alleles appearing to be incompletely dominant. All these mutants display a positive reaction to the graded vernalisation; the vernalisation requirement of the individual mutants is, however, both quantitatively and qualitatively different and hence specific for each of the mutant genotypes. lodoacetic acid is found to inhibit the vernalisation of the mutants to some extent only when the duration of the vernalisation is relatively short (20 days). A hypothesis is advanced, assuming a potential existence of a complete genetic apparatus for vernalisation already in the Dijon-G cultivar, where it is, however, blocked by suppressor or epistatic genes.
- Published
- 1973