Premium
Breeding for Resistance in Maize to First and Second Broods of the European Corn Borer 1
Author(s) -
Russell W. A.,
Guthrie W. D.,
Grindeland R. L.
Publication year - 1974
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1974.0011183x001400050034x
Subject(s) - ostrinia , biology , european corn borer , brood , backcrossing , inbreeding , inbred strain , population , agronomy , resistance (ecology) , larva , genetics , microbiology and biotechnology , botany , gene , demography , sociology , pyralidae
Resistance to first and second broods of the European corn borer [ Ostrinia nubilalis (Hübner)] in maize ( Zea mays L.) is not conditioned by the same genes. Our purpose was to determine if we could combine the two kinds of resistance into one genotype by a simple inbreeding and selection technique. Starting with 200 F 3 lines from B52 ✕ Oh43, we obtained 1 F 6 inbred line slightly better than Oh43 for first‐brood resistance and equal to B52 for second‐brood resistance. Because several loci are involved, a backcross program may not be successful in transferring all resistance genes to other lines. A sampling of a synthetic variety, ‘BS9,’ developed by combining 10 inbred lines that among them contributed first‐ and second‐brood resistance, showed a correlation near zero for evaluations to the 2 kinds of resistance. A recurrent selection program based on S 1 line evaluation is recommended to increase gene frequencies to both broods in a population which can then be used as a source for resistant lines.