Effect of exogenous Ca2+ on drought resistance physiological indexes of wine grape cultivar Pinot Noir under water stress
2007
Xi Zhumei | Sun Wanjin | Zhang Zhenwen
中国人. 为了探讨外源Ca2+对葡萄抗旱生理指标的影响，为Ca2+在葡萄耐旱生产中的应用提供参考依据，以盆栽酿酒葡萄黑比诺幼苗为试材，在水分胁迫条件下，用0.5，1.0和1.5 mmol/L CaCl2喷施黑比诺葡萄幼苗，以喷清水作为对照，研究水分胁迫下外源Ca2+对葡萄幼苗主要抗旱生理指标的影响。结果表明，与对照相比，CaCl2处理能够提高葡萄叶片可溶性糖含量、过氧化物酶(POD)及超氧化物歧化酶(SOD)活性，减缓叶绿素的分解，降低MDA含量。在整个水分胁迫期间，可溶性糖含量平均比对照提高46.4％～60.1％，SOD活性提高18.4％～66.6％，POD活性提高1.5％～2.5％，叶绿素a含量提高3.1％～9.4％，MDA含量降低8.1％～23.4％，CaCl2处理对叶绿素a的保护效果显著，对叶绿素b则无明显影响。以1.0 mmol/L CaCl2处理对提高黑比诺幼苗的抗旱性效果最佳。
显示更多 [+] 显示较少 [-]英语. To provide reference for applying exogenous Ca2+ in drought resistance viticulture, with wine grape cultivar Pinot Noir as experimental materials, the effect of Ca2+ on main drought resistance physiological indexes of grape seedling was studied in this article by spraying 0.5, 1.0 and 1.5 mmol/L CaCl2 to seedling of Pinot Noir under water stress condition. Compared with spraying water (control), the result indicated that Ca2+ could increase soluble sugar content, peroxidase (POD) and catalase (SOD) enzyme activity, decrease MDA content, and alleviate chlorophyll decomposition. Compared with control during water stress process CaCl2 treatments increased soluble sugar content by 46.4％－60.1％, increased SOD and POD enzyme activity by 18.4％－66.6％ and 1.5％－2.5％ respectively, and increased the content of Chl.a by 3.1％－9.4％, while decreased MDA content by 8.1％－23.4％; effect of CaCl2 treatments on protection of Chl. a was obvious but ineffective to Chl. b. The effect of 1.0 mmol/L CaCl2 among the treatments was the best._
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