Polymorphism and Inheritance of Seed Storage Protein in Sunflower

Polymorphism and Inheritance of Seed Storage Protein in Sunflower The data on polymorphism and inheritance of the seed storage protein helianthinin are presented. The results of hybrid analysis indicate that in the annual sunflower Helianthus annuus, helianthinin synthesis is controlled by at least three loci: HelA, HelB, and HelC. Codominant alleles controlling different electrophoretic variants of polypeptides were identified at each of the loci. The HelA locus was inherited independently of HelB and HelC in a series of dihybrid crosses. The frequencies of recombination between loci HelB and HelC estimated in F2 and BC of two crossing combinations were respectively 21.8 and 19.0%. Segregation of the HelC-controlled variants in the progenies from the crosses of cultured sunflower with annual wild species and forms corresponded to that theoretically expected for Mendelian inheritance. The maternal type of helianthinin inheritance was observed in the progenies from the crosses of inbred H. annuus L. lines with perennial diploid and polyploid HelianthusL. species. Altered expression of the HelClocus was detected in some hybrid combinations. These alterations appeared in early (F1, F2) hybrid generations and were similar in different hybrid combinations. They did not depend on the perennial paternal species being more influenced by the maternal genotype and by the mode of obtaining hybrids (in an embryo culture or in the field). These results are explained by “genomic shock” generated by hybridization of genetically incompatible species. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Genetics Springer Journals

Polymorphism and Inheritance of Seed Storage Protein in Sunflower

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Kluwer Academic Publishers-Plenum Publishers
Copyright © 2004 by MAIK “Nauka/Interperiodica”
Biomedicine; Human Genetics
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