Abscisic Acid-Induced Chilling Tolerance in Maize
Recent trends in agricultural practice of maize (Zea mays L.) in North America have been to plant the crop earlier in the spring to take the advantage of more rainfall and radiation energy, and to avoid the hot and dry periods during pollination and fertilization. In addition, various conservation forms of soil tillage are more in use, resulting in slower soil warming. These practices exacerbate chilling injury during germination and early seedling establishment (Stewart et al., 1990). How chilling (e. g. 10° to 0°C) injures plants (e. g. increased ion leakage, leaf necrosis and seedling death), and how plants tolerate the stress are still poorly understood. It is essential to investigate the physiological and biochemical mechanisms underling chilling tolerance before one can apply the technology of genetic engineering attempting to improve the chilling tolerance of maize plants.
KeywordsAbscisic Acid Freezing Tolerance Tolerance Induction Cucumber Seedling Chilling Injury
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