Abstract:

Six pea (Pisum sativum L.) mutant lines characterized by more extensive expression of the patches of silver flecking (aeromaculata) were isolated following mutagenesis. Line III/122 demonstrated the strongest expression of the supaeromaculata phenotype; the silver flecks covered large area of leaf surface. The phenotype of 1/221, 2/123, 3/13, 2/1413 and X/3 was expressed clearly but quite weaker than that of III/122 line. The mutants have shown to have single-gene recessive inheritance. Allelism test between mutants and line III/122 (preliminary known to bear the aero1-10 allele) shows that they are not allelic. The mutants 1/221 and 2/1413 were allelic but the alleles were not identical. Therefore, we suggested that the induced mutations are controlled by five different recessive genes. Crosses between mutants produced plants with much stronger supaeromaculata expression than their corresponding mutants. Following selection of some homozygous plants, two new supaeromaculata phenotypes were developed. The pea lines described here are generally considered to represent a diversity of useful materials for research on plant physiology and biochemistry.