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Locating Genes for Resistance to Maize Dwarf Mosaic In Maize Seedlings by Using Chromosomal Translocations 1
Author(s) -
Scott Gene E.,
Nelson Lloyd R.
Publication year - 1971
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/cropsci1971.0011183x001100060008x
Subject(s) - biology , chromosomal translocation , genetics , gene , chromosome , genotype , zea mays , inbred strain , agronomy
F 2 populations from crosses involving 28 reciprocal chromosomal translocations were used to identify the chromosome arms of corn ( Zea mays L.) inbred GA209 that carry genes for resistance to maize dwarf mosaic (MDM). We found that both arms of chromosome 6 carried a gene(s) for resistance to this disease. However, GA209 probably lacks a gene for resistance on either the long arm of chromosome 1 or the short arm of chromosme 9. The heterozygous genotype was nearly as susceptible as the homozygous susceptible genotype. Conclusions regarding type of gene action involved in resistance were dependent on when the notes for the presence or absence of the diease were taken.