Methods of Measuring Drought Tolerance in Corn
1967
Williams, T. V. | Snell, R. S. | Ellis, J. F.
Three methods for measuring drought tolerance in corn are presented. They include: exposing corn seedlings to a 52 C temperature for 6 hours followed by recovery counts; germinating corn seed in mannitol solution at 15-atm osmotic pressure and selecting genotypes showing the highest percent germination; and subjecting corn seedlings to a 14-day permanent wilting period in a greenhouse followed by wilt ratings. Results were supported by observations from successive field plantings, one subjected to drought and one receiving normal rainfall. Any one method should be useful in screening a large number of corn genotypes for drought tolerance. Field evaluation is recommended to substantiate the data.
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