title: [Effects of cinnamic acid on physiological characteristics of Cucumis sativus seedling].
abstract: With substrate culture, this paper studied the effects of different concentrations of cinnamic acid on the physiological characteristics of Cucumis sativus seedling. The results showed that 25 micromol.L(-1) of cinnamic acid had an inhibition effect on carotenoids, but a promotion effect on chlorophyll a and b. 50 micromol.L(-1) of this compound could significantly inhibit the photosynthetic rate, transpiration rate and root activity (P < 0.05), and this effect was getting stronger when the concentration was higher. 150 micromol cinnamic acid.L(-1) had a significant inhibition effect on chlorophyll a and b (P < 0.05). Cinnamic acid had a weak inhibition effect on root activity when its concentration was low (25-50 micromol.L(-1)), but the effect was significant when the concentration was high (100-150 micromol.L(-1)), which became stronger with the longer handling time (P < 0.05).
authors.affiliation: Northeast Agricultural University, Harbin 150030, China. feng4862@sina.com
authors.forename: Fengzhi
authors.initials: F
authors.lastname: Wu
authors.forename: Kai
authors.initials: K
authors.lastname: Pan
authors.forename: Xiuyan
authors.initials: X
authors.lastname: Zhou
mesh_terms: D002338:Carotenoids / Q000378:metabolism; D002734:Chlorophyll / Q000378:metabolism; D002934:Cinnamates / Q000494:pharmacology*; D018553:Cucumis sativus / Q000254:growth & development* / Q000502:physiology; D010788:Photosynthesis / Q000187:drug effects*; D018526:Plant Transpiration / Q000187:drug effects; D036226:Seedlings / Q000254:growth & development / Q000502:physiology*
chemical_list: D002934:Cinnamates; C029010:cinnamic acid; D002734:Chlorophyll; D002338:Carotenoids