Effect of Calcium on Tuberization in Potato (Solanum tuberosum L.).
Tuberization response of single-node leaf cuttings from induced potato plants (Solanum tuberosum L.) was reversed when pretreated with 5 millimolar ethyleneglycol-bis-(beta-aminoethyl ether)N,N'-tetraacetic acid (EGTA) + 50 micromolar calcium ionophore (A23187) and resumed when transferred to a CaCl(2)-containing medium. Tuberization was inhibited by LaCl(3), chlorpromazine, and trifluoperazine at 5 to 10 micromolar. These results suggest a role for calcium in the tuberization process.
Balamani
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Department of Horticulture and Landscape Architecture, Washington State University, Pullman, Washington 99164-6414.
Veluthambi
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Poovaiah
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BW