黄檀扦插生根过程中叶片营养物质含量变化研究  

Change of nutrient content in leaves of Dalbergia hupeana cuttings during rooting

作　　者：黄光卫 肖京武 张斌[2,3] 陆佳[2,3] 胡育文[2,3] 陈乔松 谢昱昀 HUANG Guangwei;XIAO Jingwu;ZHANG Bin;LU Jia;HU Yuwen;CHEN Qiaosong;XIE Yuyun(Yongzhou Forestry Institute,Yongzhou 425045,Hunan,China;College of Forestry,Central South University of Forestry and Technology,Changsha 410004,Hunan,China;Key Laboratory of Soil&Water Conservation and Desertification Combating of College of Hunan Province,Central South University of Forestry and Technology,Changsha 410004,Hunan,China)

机构地区：[1]永州市林业科学研究所,湖南永州425045 [2]中南林业科技大学林学院,湖南长沙410004 [3]中南林业科技大学水土保持与荒漠化防治湖南省高等学校重点实验室,湖南长沙410004

出　　处：《湖南林业科技》2023年第3期102-106,共5页Hunan Forestry Science & Technology

基　　金：湖南省教育厅科学研究项目(21C0158);湖南省林业科技攻关与创新项目“黄檀人工林精准高效培育技术与示范”;湖南省大学生创新创业训练计划项目(S202110538049)。

摘　　要：研究黄檀扦插生根过程中营养物质含量的变化,为黄檀扦插繁殖提供技术支持和理论指导。以同期生长的母树叶片作为对照,研究了从大量生根期到根系伸长期,插穗叶片中可溶性糖、总淀粉、可溶性蛋白、全氮、全磷等营养物质含量的变化。结果表明:大量生根期,插穗叶片中的全氮含量明显低于对照中的全氮含量;大量生根期到根系伸长期,插穗叶片中的可溶性蛋白、总淀粉含量逐渐升高,全氮、全磷、可溶性糖含量逐渐降低。这说明:低浓度的氮素含量有利于黄檀插穗不定根的形成;根系伸长期,插穗对可溶性糖、氮、磷的需求较大,可通过外部施用糖溶液、氮素和磷素来促进根系的生长。It was great significance for providing support and theoretical guidance for the cutting propagation technology of Dalbergia hupeana to discuss the changes of nutrient content in the rooting process.The changes of soluble sugar,total starch,soluble protein,total nitrogen,and total phosphorus content in the leaves of cuttings were studied from the rooting stage to the root elongation stage,using mother tree leaves grown at the same time as a control.The results showed that the total nitrogen content in the leaves of cuttings was significantly lower than that of the control at the rooting stage.The contents of soluble protein and total starch in the cutting leaves increased gradually,while the contents of total nitrogen,total phosphorus,and soluble sugar decreased gradually from the rooting stage to the root elongation stage.Low nitrogen content was beneficial to the formation of adventitious root of cuttings.At the root elongation stage,the cuttings had a great demand for soluble sugar,nitrogen and phosphorus,and the growth of roots could be promoted by external application of sugar solution,nitrogen,and phosphorus.

关 键 词：黄檀 扦插 营养物质 

分 类 号：S792.28[农业科学—林木遗传育种]