ARTICHOKE SEED GERMINATION RESPONSES TO CHILLING AND GROWTH REGULATOR TREATMENTS

in HortScience
Author:
Wayne L. SchraderUniversity of California, Cooperative Extension, 5555 Overland Avenue, Building 4, San Diego, California 92123

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Three trials were conducted in 1989 to evaluate the effects of chilling, freezing, growth regulator, and acid scarification treatments on the seed germination of two artichoke varieties. Soaking seed in a 500, 1000, or 2000 ppm ethephon solution for 5 minutes significantly increased the rate and uniformity of germination. Chilling, freezing, gibberellin, and cytokinin treatments did not affect germination rate. Freezing moistened seed and acid scarification significantly delayed germination. Ethephon treatments did not affect subsequent seedling development.

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