Effects of chemical control on growth and yield of virus-free sweetpotato
(0) In the growth flourishing period(before or after two lines seedlings grew very near)of virus-free sweetpotato,three plant growth regulators(paclobutrazol,mepiquat-chloride and zhuang feng an)were used to overground parts of virus-free sweetpotato.Results suggested that all of the three plant growth regulators were effective to regulate overground parts growth of virus-free sweetpotato,such as reducing the tendril length,increasing the stem thickness,increasing the branch quantities of individual plant.Paclobutrazol was best in control the growth of tendrils and it made the average tendril length reduce 11.2％ compared with the control,mepiquat-chloride was effective distinctly in increasing the stem thickness and made it increased 14.5％；The three plant growth regulators had improved the earthnut weight of individual plant and the rates of large and middle sweetpotatoes,and the yield of fresh sweetpotato was improved observably；zhuang feng an was best in improving the yield of fresh sweetpotato and made it improved 13.1％,the second was paclobutrazol and made it improved 8.2％,the third was mepiquat-chloride and made it improved 4.9％.
Virus-free sweetpotato Plant growth regulator Growth Yield
Chengxing Huang Yanxia Li Jianzhi Fan Chengding Duan Hongmei Zhou
Jining Academy of Agricultural Science,Shandong province,Jining 272031,China
国际会议
3rd China-Japan-Korea Workshop on Sweetpotato(第三届中日韩甘薯学术研讨会)
北京
英文
169-173
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）