| 4种植物生长调节剂对红花玉兰嫩枝扦插生根的影响 |
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| 引用本文： | 王艺,贾忠奎,马履一,邓世鑫,朱仲龙,桑子阳.4种植物生长调节剂对红花玉兰嫩枝扦插生根的影响[J].林业科学,2019(7):35-45. |
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| 作者姓名： | 王艺 贾忠奎 马履一 邓世鑫 朱仲龙 桑子阳 |
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| 作者单位： | 北京林业大学省部共建森林培育与保护教育部重点实验室;五峰博翎红花玉兰科技发展有限公司 |
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| 基金项目： | 国家林业局林业公益行业科研专项(201504704);国家林业局林业知识产权转化应用项目(知转2017-11) |
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| 摘 要： | 【目的】应用不同种类不同浓度的生长调节剂对红花玉兰嫩枝进行处理,以提高红花玉兰嫩枝扦插生根率,为红花玉兰的快速繁殖、栽培及推广提供理论支持和技术指导。【方法】以5年生红花玉兰实生苗为采穗母树,选择其当年生半木质化枝条制备插穗作为试验材料,采用双因素完全随机区组设计,研究GGR 6、NAA、IBA、IAA 4种植物生长调节剂以及200、500、800、1 000、2 000、 3 000 mg ·L -1 6种不同浓度对红花玉兰嫩枝扦插生根的影响。扦插80天后,调查统计其生根率、生根数量、平均根长、平均根直径和生根性状评分率,并运用主成分分析法对各处理组合的生根效果进行综合评价。【结果】 NAA处理生根率以及根系形态表现均处于较高水平,其中1 000 mg ·L -1 的溶液处理扦插根系综合质量最好,平均生根数量为13.3,相比清水对照组增加了12根;平均根长为14.33 cm,为清水对照组的2.7倍;平均根直径为2.44 mm,比清水对照组增粗0.60 mm;生根性状评分率为55.4%,相比清水对照组提高22.1%;生根率最高,达到53.3%,与其他浓度存在显著差异,约为清水对照组的16倍。【结论】 4种植物生长调节剂中NAA处理插穗效果最好,而在其6种不同浓度中,1 000 mg ·L -1 的处理生根效果最好。
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| 关 键 词： | 红花玉兰 扦插 植物生长调节物质 生根率 根系形态指标 |
Effects of Four Plant Growth Regulators on Rooting of the Softwood Cutting of Magnolia wufengensis |
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| Wang Yi,Jia Zhongkui,Ma Lüyi,Deng Shixin,Zhu Zhonglong,Sang Ziyang.Effects of Four Plant Growth Regulators on Rooting of the Softwood Cutting of Magnolia wufengensis[J].Scientia Silvae Sinicae,2019(7):35-45. |
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| Authors: | Wang Yi Jia Zhongkui Ma Lüyi Deng Shixin Zhu Zhonglong Sang Ziyang |
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| Institution: | (Key Laboratory for Silviculture and Conservation, Ministry of Education, Beijing Forestry University Beijing 100083;Wufeng Boling Magnolia wufengensis Technology Development Co.Ltd. Yichang 443400) |
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| Abstract: | 【Objective】 The aim of this study was to improve the rooting rate of cutting of M. wufengensis , and provide theoretical support and guidance for the rapid propagation, cultivation and promotion of M. wufengensis.【Method】The semi-lignified branches from 5-year-old Magnolia wufengensis seedlings were collected as the propagation materials. A completely randomized block design with two factors, including four types of plant growth regulators of GGR 6 ,NAA,IBA,and IAA, and six concentrations of 200,500,800,1 000,2 000,3 000 mg ·L -1 ,were used. The effects of different types and concentrations of plant growth regulars on rooting parameters of M. wufengensis , i.e. rooting rate, number of adventitious roots, average root length, average root diameter, and root effective traits rate, were investigated. And then the principal component analysis was used to comprehensively evaluate the effects of each treatment combination on rooting.【Result】The results showed that the rooting rate and root morphology of NAA solution treatment was all at a high level among the four plant growth regulators. When the cuttings was soaked in 1 000 mg ·L -1 NAA solution, the cutting root had the best quality. The average number of adventitious roots was 13.3, which was 12 more than that of the control group treated with water. The average root length was 14.33 cm, which was about 2.7 times of the control group. The average root diameter was 2.44 mm,which was 0.60 mm thicker than that of the control group. The root effective traits rate was 55.4%, which was 22.1% higher than that of the control group. The rooting rate of NAA 1 000 mg·L -1 treatment was the highest, reaching 53.3%, significantly different from other concentrations, and 16 times higher than that of the control group.【Conclusion】The NAA solution had the better rooting effects than the other three types of growth regulator, and the best concentration of NAA was 1 000 mg ·L -1 . The research has greatly increased the rooting rate of M. wufengensis , and has provided theoretical basis and technical guidance for the large-scale propagation of germplasm resources of M. wufengensis . |
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| Keywords: | Magnolia wufengensis cuttage propagation plant growth regulators rooting rate root morphology parameter |
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