CHEN Rui,XU Qian,XIAN Xiao-lin,et al.Effects of Different Hormones and Growth Media on Cutting Propagation of Rhododendron[J].HEILONGJIANG AGRICULTURAL SCIENCES,2016,(10):68-74.[doi:1002-2767（2016）10-0068-07]
不同激素和基质对杜鹃扦插繁殖的影响
- Title:
- Effects of Different Hormones and Growth Media on Cutting Propagation of Rhododendron
- 文章编号:
- 1002-2767（2016）10-0068-07
- Keywords:
- Rhododendron; cutting ; hormone; culture medium; propagation traits
- 分类号:
- S685.21
- 文献标志码:
- A
- 摘要:
- 扦插是目前杜鹃产业化发展中的重要繁殖方式，为提高其成活率和壮苗率，以“红云”杜鹃当年生半木质化枝条为材料，探究不同激素种类和浓度、不同基质对杜鹃插穗生根率、根数、根长、根茎粗度、老叶留存数、老叶留存率、新梢数、新梢长和根冠比等生根指标的影响。结果表明:GA3处理在根系长和新梢长上表现最佳，而IBA处理则在总根数、根茎粗度、老叶留存数、老叶留存率、新梢数和根冠比上表现最佳，两者为其扦插育苗的理想生根剂，其次为NAA，IAA效果较差不宜用于其扦插育苗；单一浓度方面，20 mg·L-1IBA的育苗效果最佳，生根率达66.250%，具有较高的根数（12.680条）、根长（13.260 cm）、根茎粗度（3.520 mm）、老叶留存数（13.860枚）、老叶留存率（69.250%）、新梢数（1.900个）、新梢长（7.760 cm）和根冠比（0.297）；不同栽培基质对红云杜鹃插穗存活和生长的影响表明，纯泥炭和混合基质（河沙∶泥炭∶珍珠岩=1∶1∶1）为其理想扦插基质。
- Abstract:
- Cutting is important in the development of current industrialization of Rhododendron propagation mode.It is the research emphasis of production that how to improve the survival rate and seeding rate.In this research,taking cuttings of annual woody branches of Rhododendron simsii‘hongyun’ as experimental material,the effects of different combinations of rooting medium,types and concentrations on rooting parameters of rootting rate,number of total roots,length of the longest adventitious root,diameter of root system,retention number of old leaves,retaining rate of old leaves,number of new shoot,length of new shoot and root cap ratio were investigated.The results showed that there were significant differences among treatments of four growth regulators on the clonal propagation(P<0.05).GA3 had the best effect on length of the longest adventitious root and length of new shoot.And IBA had the best effect on number of total roots,diameter of root system,retention number of old leaves,retaining rate of old leaves and number of new shoot.Both of GA3 and IBA were ideal hormones for Rhododendron cutting propagation,followed by NAA,IAA had worse effect on propagation traits which should not be used for Rhododendron cutting propagation.When concentration was alone,the highest rooting rate reached under treatment of 20 mg·L-1IBA.Under this treatment,the rooting rate was up to 66.250%,and also exhibited the good performance of numbers of root(12.680),root length(13.260 cm),diameter of root system(3.520 mm),retention number of old leaves(13.860),retaining rate of old leaves(69.250%),number of new shoot(1.900),length of new shoot(7.760 cm),and root cap ratio(0.297);Effect of cuttings of different growth media on the growth and survival of Rhododendron simsii‘hongyun’ showed that the pure peat medium and mix medium(sand∶peat∶perlite=1∶1∶1) was the ideal cutting medium.
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备注/Memo
收稿日期：2016-07-16