Chlorophyll Relationships for Certain Sweet Corn Genotypes in Different Environments
1966
Oelke, E. A. | Andrew, R. H.
Five inbred lines of sweet corn and their l0 F, hybrids were used to investigate the relationships of chlorophyll concentration over successive sampling dates to phenotype, to ethanol soluble sugars and crude protein in the leaf tissue, to dry weight, and to ear weight at 70% moisture. The inbreds were dark green, medium green, pellucid, and fine striped in appearance. Phenotypic appearance was an indication of chlorophyll concentration when plants were grown in the field and growth chamber. Correlations for chlorophyll concentration between experiments were nearly always highly significant indicating little change in rank of the inbreds and hybrids between environments. Chlorophyll concentration decreased with age in all environments. Hybrids maintained their chlorophyll concentration longer during the growing season than the inbreds and also had higher concentrations than either parent. Estimates of general and specific combining abilities indicated that inbreds with high chlorophyll concentrations gave hybrids with high chlorophyll. Little correlation was found between chlorophyll concentration and ethanol soluble sugars, crude protein, dry weight production, and ear weight.
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