Abstract
Electrophoretic variation in alcohol dehydrogenase (ADH) was examined in tetraploidGossypium hirsutum and its putative diploid progenitorsG. ramondii, G. herbaceum, and a close relative,G. arboreum. All the diploids had three isozymes, while strains of the tetraploidG. hirsutum had either 4 or 6. Each isozyme was eluted from starch gels and significant differences in activity were noted between several of the isozymes relative to pH, substrate, temperature and salinity. This suggests that an increase in enzyme heterozygosity can result in higher levels of developmental homeostasis, but it depends on the isozyme alleles involved.
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Michigan Agricultural Experiment Station Journal Article No. 10379.
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Hancock, J.F. Alcohol dehydrogenase isozymes inGossypium hirsutum and its putative diploid progenitors: The biochemical consequences of enzyme multiplicity. Pl Syst Evol 140, 141–149 (1982). https://doi.org/10.1007/BF02407294
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DOI: https://doi.org/10.1007/BF02407294