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Annals of Botany 52: 861-871, 1983
© 1983 Annals of Botany Company

RESEARCH-ARTICLE

Factors Controlling the Basipetal Pattern of Tuberization in Induced Potato (Solanum tuberosum L.) Cuttings*

B. A. KAHN{dagger} and E. E. EWING

Department of Vegetable Crops, Cornell University Ithaca, NY 14853 USA

{dagger} Present address: Department of Horticulture, Oklahoma State University, Stillwater, OK 74078 USA.

Accepted: 30 April 1983   

Potato plants (Solanum tuberosum L. cvs Chippewa and Katahdin) were grown in a glasshouse under continuous light. Various numbers of long (16 h) nights were given to these plants and stem cuttings were taken. Treatments were applied to the cuttings, which were then placed in a mist bench under continuous light and examined for tuberization after 12 days.

The general tendency for the strongest tuberization to occur at the most basipetal nodes, which is commonly seen with intact potato plants, was also found on stem cuttings. This pattern could not be attributed primarily to orientation with respect to gravity, proximity to the mother tuber, or age of buried buds. Buried buds farthest from active leaves tended to tuberize the most strongly. However, distance of the buried bud from stem exposed to light may have been of equal or greater importance.

potato, Solanum tuberosum L., stem cuttings, tuberization


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