3种植物生长调节剂对树头菜扦插生根的影响

doi:10.7525/j.issn.1673-5102.2020.02.006

摘要/Abstract

摘要： 利用植物生长调节剂不同种类及质量浓度处理树头菜插穗，了解其扦插生根机制并筛选出适宜扦插繁殖的生长调节剂及浓度配比，为其扩大繁殖和生产提供科学依据。以树头菜一年生枝条为材料，采用3种植物生长调节剂（IAA、NAA、ABT-1）的3种不同质量浓度进行正交试验，清水处理（CK）作为对照，扦插3个月后对其芽生长量及生根性状（生根率、生根量、最长根长、平均根长等）进行测定并综合分析。本次试验筛选出的树头菜扦插最优方案为A1B2C2，即ABT-1质量浓度为50 mg·L^-1、NAA质量浓度为200 mg·L^-1、IAA质量浓度为200 mg·L^-1，该处理生根率（83.33%）、平均根长（24.03 mm）、最长根长（46.13 mm）、平均根数（24条）、根系效果指数（19.06）为CK的2.27、2.97、3.03、4.50、12.79倍，根系发育较好。不同植物生长调节剂在适宜的浓度下混合利用可以显著增加树头菜的生根能力，进而加快生长并提高其扦插生根率。

关键词: 树头菜, 扦插, 生根, 生长调节剂, 根系效果指数

Abstract: Different kinds and mass concentrations of plant growth regulators were used to deal with the cuttings of Crateva unilocularis, in order to know the cutting mechanism and to screen out the growth regulator and concentration ratio for the propagation of the C.unilocularis, so as to provide a real and feasible scientific basis for the expansion propagation and production of C.unilocularis. By taking C.unilocularis annual branches as materials, orthogonal test was conducted with three kinds of plant growth regulator(IAA, NAA, ABT-1) in three kinds of different mass concentration, and water treatment(CK) was kept as contrast, cutting three months after the shoot growth and root traits(longest rooting rate, root volume, root length, average root length, etc.) were measured and comprehensively analyzed. The test screening of C.unilocularis cuttings, the optimal scheme for A1B2C2, namely ABT1 mass concentration of 50 mg·L^-1, mass concentration of 200 mg·L^-1 NAA, IAA concentration of 200 mg·L^-1, the rooting rate(83.33%), average root length(24.03 mm), the longest root length(46.13 mm), the average root number(24), root effect index(19.06) for CK 2.27 times, 2.97 times and 3.03 times, 4.50 times and 12.79 times, The root system was well developed. The rooting ability of C.unilocularis can be significantly increased by mixing different plant growth regulators at the appropriate concentration, thus accelerating the growth and increasing the rooting rate of cuttings.

Key words: Crateva unilocularis, cuttings, take root, growth regulator, root effect index

中图分类号:

Q949.95

郑鑫华, 董琼, 段华超, 茶晓飞, 周春, 周志超. 3种植物生长调节剂对树头菜扦插生根的影响[J]. 植物研究, 2020, 40(2): 202-208.

ZHENG Xin-Hua, DONG Qiong, DUAN Hua-Chao, CHA Xiao-Fei, ZHOU Chun, ZHOU Zhi-Chao. Effect of Three Growth Regulators on Rooting of Cuting of Crateva unilocularis[J]. Bulletin of Botanical Research, 2020, 40(2): 202-208.

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