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Published online 1 July 1965
Published in Agron J 57:399-404 (1965)
© 1965 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Effects of Repeated Drought Periods on Photosynthesis and Survival of Cereal Seedlings1

Glenn W. Todd and Daniel L. Webster2

Synopsis: There were no significant differences in photosynthetic rate among wheat varieties differing in drought hardiness although slightly higher rates were obtained at lower turgor for nearly all cereal varieties after they had been subjected to a single drought period. Photosynthetic rates paralleled moisture stress during successive drought periods. A method of screening for relative drought hardiness among wheat varieties was devised and tested and this correlated well with known field hardiness.

1 Contribution of the Department of Botany and Plant Pathology, Oklahoma State Univ., Stillwater; Oklahoma Agricultural Experiment Station Project 1058. Journal Paper No. 1080.

2 Associate Professor and Research Assistant in Botany. (Present address of Webster: Agronomy Department, North Carolina State, Raleigh, N. C.).

Received for publication December 14, 1964.




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Copyright © 1965 by the American Society of Agronomy.