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连香树嫩枝扦插繁殖技术研究

Journal of Fujian Forestry Science and Technology(2011)

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Abstract
以连香树(Cercidiphyllum japonicum)当年生枝条为材料,研究了不同植物生长调节剂、不同IBA浓度及其处理时间对插穗生根的影响.结果表明:连香树属于皮部生根型,只有极少数为愈伤组织生根.植物生长调节剂处理是提高嫩枝插穗生根能力的一个必要措施,其中IBA对连香树插条生根效果最好,NAA次之,IAA最差.采用IBA 100 mg·L-1 +NAA 100 mg·L-1混合处理嫩枝插条效果最好,生根率达到81.67%,且幼苗长势良好.IBA 500 mg·L-1快蘸处理8 s,生根率达到71.67%;IBA 200 mg·L-1浸泡6h,生根率为77.78%.综合各项生根指标,采用IBA 100 mg·L-1 +NAA 100 mg·L-1浸泡嫩枝插条4h,最适宜连香树插条生根.
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Key words
cutting raising,plant growth regulator,Cercidiphyllum japonicum
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