硝酸钾对香蕉袋苗生长及生理生化变化的影响  

Effects of Potassium Nitrate on Growth and Physiological and Biochemical Changes of Bagged Banana Seedling

作　　者：周君 杨卫华 丁燕 周欢 徐旭华 丰锋[1] ZHOU Jun;YANG Wei-hua;DING Yan;ZHOU Huan;XU Xu-hua;FENG Feng(College of Coastal Agriculture Science,Guangdong Ocean University,Zhanjiang,Guangdong 524088,China)

机构地区：[1]广东海洋大学滨海农业学院,广东湛江524088

出　　处：《东南园艺》2020年第5期1-6,共6页Southeast Horticulture

基　　金：国家重点研发计划-热带果树化肥农药减施增效技术集成研究与示范(2017YFD0202102);教育部卓越农林人才培养计划(GDOU2014041204);国家级大学生实践教学基地-农科教合作人才培养基地(GDOU2013040301);国家级大学生创新创业项目(201910566009)。

摘　　要：以香蕉袋苗为材料,采用单因素试验设计方法,研究硝酸钾对香蕉袋苗生长及生理生化变化的影响。结果表明:1.60 g·L^-1的硝酸钾处理的香蕉组培苗生长最好,培养40 d,香蕉茎高9.33±0.21 cm、茎粗0.558±0.924 cm、叶数6.07±0.31、叶长9.13±0.47 cm,叶宽6.17±0.84 cm,根冠比0.146±0.009,均显著高于其他处理;香蕉的可溶性蛋白含量13.16±0.52 mg·g^-1、可溶性糖含量173.33±4.20 ug·g^-1、硝酸盐含量833.09±158.33 ug·g^-1、叶绿素含量0.799±0.639 mg·g^-1,均显著高于其他处理。Effects of potassium nitrate on the growth,physiological and biochemical changes of banana bag seedlings were studied by single factor experiment design method.The results showed that 1.60 g·L^-1 potassium nitrate treatment was the best for the growth of banana tissue-cultured seedlings.After 40 days of culture,the stem height was 9.33±0.21 cm,stem diameter was 0.558±0.924 cm,leaf number was 6.07±0.31,leaf length was 9.13±0.47 cm,leaf width was 6.17±0.84 cm and root-shoot ratio was 0.146±0.009.They were significantly higher than those under other treatments.Content of soluble protein in banana was 13.16±0.52 mg·g^-1,soluble sugar content was 173.33±4.20 ug·g^-1,nitrate content was 833.09±158.33 ug·g^-1,and chlorophyll content was 0.799±0.639 mg·g^-1.They were significantly higher than that under other treatments.

关 键 词：硝酸钾 香蕉 袋苗 

分 类 号：S668.1[农业科学—果树学]