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Published in Crop Sci 11:454-456 (1971)
© 1971 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Seed Hydration-Chilling Treatment Effects on Germination and Subsequent Growth and Fruiting of Cotton1

R. O. Thomas and M. N. Christiansen2

Good and poor quality cottonseed (Gossypium hirsutum L.) were given the following pre-planting treatments: (a) hydrated in water for 6 hr at 31 C; (b) hydrated as in (a) and chilled for 24 hr at 5 C in water; (c) chilled at 5 C for 24 hr in water; and (d) control no treatment. Field plantings of both good and poor seed were adversely influenced by chilling the seed. Preconditioning hydration prevented chilling injury and also improved performance of plantings of nonchilled poor quality seed. A hydration-chilling treatment significantly increased yields of plantings from poor quality seed above the control.

Key Words: Gossypium hirsutum L.

1 Contribution from Plant Science Research Division, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, Md. 20705, in cooperation with the Delta Branch of the Mississippi Agricultural Experiment Station, Stoneville, Miss.

2 Plant Physiologists, Plant Science Research Division, Agricultural Research Service, U.S. Department of Agriculture, Stoneville, Miss., and Beltsville, Md., respectively.

Received for publication July 29, 1970.




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