Rauser W E, Horton R F
Department of Botany and Genetics, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
Plant Physiol. 1975 Mar;55(3):443-7. doi: 10.1104/pp.55.3.443.
Root auxanometers were used to determine the growth rates of individual intact primary roots accurately and quickly. The growth of pea (Pisum sativum L.) roots was inhibited by both indoleacetic acid and ethylene within 20 minutes. A supramaximal concentration of ethylene inhibited root growth less than did 5 to 20 mum indoleacetic acid, indicating that inhibition of root growth by auxin was not due only to indoleacetic acid-induced ethylene production. Inhibition of root growth was largely relieved within 60 minutes of removal of both growth regulators.
根生长测定仪被用于准确且快速地测定单个完整初生根的生长速率。豌豆(Pisum sativum L.)根的生长在20分钟内受到吲哚乙酸和乙烯的抑制。乙烯的超最大浓度对根生长的抑制作用小于5至20 μmol吲哚乙酸,这表明生长素对根生长的抑制并非仅归因于吲哚乙酸诱导的乙烯产生。在去除两种生长调节剂后的60分钟内,根生长的抑制作用基本得到缓解。