摘要
选用砧木‘云南黑籽南瓜’和‘黄诚根 2 号’嫁接‘新泰密刺’黄瓜,以自根黄瓜为对照,在人工气候室内采用水培法研究了不同外源硅浓度下幼苗的光合特性、生物量积累及硅吸收分配特性。结果表明:低浓度外源硅(0.085 和 0.17mmol/L)提高幼苗的光合速率、蒸腾速率和生物量,高浓度外源硅(1.7 mmol/L)起到抑制作用;器官硅含量随外源硅浓度升高而增加,不同器官中硅含量为叶片>根系>茎;植株对硅的吸收速率为‘云南黑籽南瓜’嫁接黄瓜>自根黄瓜>‘黄诚根 2 号’嫁接黄瓜,相同硅浓度下器官中硅含量呈现相同变化规律。嫁接和适量外源硅可以促进黄瓜幼苗生长,嫁接砧木会改变植株对硅的吸收分配特性。
The grafted cucumber ‘Xintaimici’ on rootstock ‘Yunnan figleaf gourd’and rootstock ‘Huang Chenggen No 2’ were used, taking own-rooted cucumber as a control, and the photosynthesis characteristics, biomass accumulation and silicon absorption and distribution characteristics of seedlings were studied under different exogenous silicon concentrations by hydroponic method in artificial climate chamber. The results showed that low concentration of exogenous silicon (0.085 and 0.17 mmol/L) increased photosynthetic rate, transpiration rate and biomass of seedlings, however high concentration of exogenous silicon (1.7 mmol/L) inhibited;The silicon content in organs increased with increasing concentration of exogenous silicon, and the silicon content in different organs was leaf>root>stem;The rate of silicon uptake by plants was grafted cucumber on ‘Yunnan figleaf gourd’> own-rooted cucumber > grafted cucumber on ‘Huang Chenggen No 2’, and silicon content in organs showed the same at same silicon concentration. Grafting and proper amount of exogenous silicon can promote the growth of cucumber seedlings and rootstocks change the absorption and distribution characteristics of silicon in plants.
作者
刘淑侠
周鑫
李治红
赵升
冯改利
李岩
魏珉
LIU Shu-xia;ZHOU Xin;LI Zhi-hong;ZHAO Sheng;FENG Gai-li;LI Yan;WEI Min(College of Horticultural Science and Engineering, Tai’an 271018, China;Scientific Observing and Experimental Station of Environment Controlled Agricultural Engineering in Huang-Huai-HaiRegion, Ministry of Agriculture, Tai’an 271018, China;State Key Laboratory of Crop Biology, Tai’an 271018, China;Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Tai’an 271018, China)
出处
《山东农业大学学报（自然科学版）》
北大核心
2019年第3期367-371,共5页
Journal of Shandong Agricultural University：Natural Science Edition
基金
国家自然科学基金(31272211,31572171)
国家现代农业产业技术体系建设专项(CARS-23)
关键词
硅
嫁接
砧木
黄瓜
生长
silicon
grafting
rootstock
cucumber
growth
