Antitranspirant-Induced Increases in Leaf Water Potential Increase Tuber Calcium and Decrease Tuber Necrosis in Water-Stressed Potato Plants | Zendy

Kyaw Kyaw Win | Zendy; Gerald A. Berkowitz | Zendy; M. R. Henninger | Zendy

Open Access

Antitranspirant-Induced Increases in Leaf Water Potential Increase Tuber Calcium and Decrease Tuber Necrosis in Water-Stressed Potato Plants

Author(s) -

Kyaw Kyaw Win,

Gerald A. Berkowitz,

M. R. Henninger

Publication year - 1991

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.96.1.116

Subject(s) - solanum tuberosum , biology , horticulture , solanaceae , calcium , wax , agronomy , water stress , chemistry , gene , biochemistry , organic chemistry

Experiments were undertaken with field-grown potato (Solanum tuberosum L.) plants to test the hypothesis that altering leaf:tuber water potential gradients within a plant subjected to low soil moisture will allow greater Ca accumulation in tubers and reverse Ca deficiency-related tuber necrosis. Antitranspirant formulations containing a wax emulsion and a spreader/sticker surfactant increased leaf water potential during a drought episode, significantly reducing the potential gradient that develops between leaf and tuber during a period of stress. Increased leaf water potential in treated plants was associated with decreased leaf Ca and increased tuber Ca. Tuber necrosis was found to be reduced in treated plants, thus increasing tuber quality.

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