Zhi-Zhen Wang

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The objective of this study was to investigate the influence of exogenous 24-epibrassinolide (EBR) on the substances involved in antioxidation and osmoregulation responses of young grape plants under chilling stress. The grapevine leaves were sprayed with 0 (control), 0.05, 0.10 or 0.15 mg/L of 24-epibrassinolide and then exposed to 4 and 0 °C for 24 h,(More)
This paper studies robustness of MIMO control systems with parametric uncertainties, and establishes a lower dimensional robust stability criterion. For control systems with interval transfer matrices, we identify the minimal testing set whose stability can guarantee the stability of the entire uncertain set. Our results improve the results in the(More)
The effects of 24-epibrassinolide (EBR) on chlorophyll fluorescence, leaf surface morphology and cellular ultrastructure of grape seedlings (Vitis vinifera L.) under water stress were investigated. The grape seedlings were subjected to 10 % (w/v) polyethylene glycol (PEG-6000) and treated with 0.05, 0.10 or 0.20 mg L−1 EBR, respectively. EBR application(More)
— Let H(z) be a third-order discrete-time transfer function with complex poles. This paper considers the following question: under what conditions does there exist a positive realization whose dimension is equal to the McMillan degree of H(z). A sufficient condition is established for such a realization, which is also necessary under some mild assumption on(More)
‘Cabernet Sauvignon’ (Vitis vinifera L.) grape berries were treated with 0.4 mg/l 24-epibrassinolide applied once at fruit set (‘pea-sized berry’ phenological stage) (EBR-T1) or the same concentration EBR applied twice at fruit set and 14 days before véraison (EBR-T2). Berries sprayed with deionized water served as the control. The contents of(More)
The influence of 24-epibrassinolide (EBR) on the regulation of antioxidant and pesticide detoxification systems in grape seedlings (Vitis vinifera L.) was investigated. The grapevine leaves were pretreated with different concentrations of EBR (0.10, 0.21 and 0.42 μM) before spraying with chlorothalonil (CHT) (600 times diluent). Compared with the control,(More)