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The Journal of Heredity 1996:87(5):389-391
© 1996 The American Genetic Association 87:389-391

other

A Seedling Lethal Maize Mutant Lacking Functional Leaf Stomates

R. J. Lambert, L. M. Treeful, and J. H. Sherrard

Department of Crop Sciences, University of Illinois 1102 South Goodwin Avenue, Urbana, IL 61801

Corresponding Editor: Gary E. Hart

Abstract

A seedling lethal maize mutant was isolated and found to lack functional stomates. The mutant is controlled by a single recessive gene based on segregation ratios in the F2 and F3 generations. Comparisons of normal and mutant seedlings from 6–11 days after seedling emergence showed seedling dry weight, nonstructural carbohydrates, and total chlorophyll content was significantly less, and nitrate content significantly higher for the mutant than for normal seedlings. Mutant seedlings contained a higher water content than normal seedlings caused by the nonfunctional stomates that lack normal guard cells, causing a lack of transpiration.


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