摘要
选择不同采条年龄母树及母树个体,研究不同个体对川滇桤木穗条生根的影响,研究不同基质、激素处理及插穗部位对川滇桤木插穗生根效果的影响。结果表明:相同年龄的不同实生苗个体间插穗扦插后生根能力差异性显著;萌条插穗扦插后生根情况最好,生根率、生根质量均高于实生母树,并且不同个体间差异性不显著。生根率顺序依次为当年生(31.45%)>3 a生(10.11%)>5 a生(6.30%);根系效果指数依次为当年生(4.26)>3 a生(0.74)>5 a生(0.39)。川滇桤木枝条的基部穗条扦插后生根率(47.37%)和根系效果指数(5.75)最好。3个部位的生根率、生根质量和生根性状差异不明显。不同激素处理对川滇桤木插穗生根能力影响显著,低浓度浸泡3 h效果普遍高于高浓度1 min处理。100 mg/L IBA 3 h处理下发根条数最多,平均为5.26条,生根性状最好,根系效果指数为45.148。清水3 h处理下生根率(52.08%)和根长(9.3 cm)为最优。不同基质处理中纯基质蛭石生根能力相对要好,生根率为30.67%,根系效果指数最高为8.661。混合基质以草炭∶珍珠岩∶红壤为1∶2∶1最佳,生根率最高为26.67%。
Studied on effect on rooting efficiency of different individuals by choosing mother trees of different ages and individuals,the effect of different cutting mediums,hormone treatments and positions on rooting efficiency of Alnus ferdinandi-coburgi were studied.The results showed that the difference of rooting ability among different seedlings individuals in the same age was significant.The rooting complexions of sprout cuttings was the best,the rooting rate and quality were both higher than that of seedlings,besides the difference was not significant.Rooting rate order was：current year（31.45%）3 years old（10.11%）5 years old（6.30%）.The cutting rate（47.37%） and rooting index（5.75） of basal cutting were the best,the differences of rooting rate and rooting quality and complexions were not significant.The effect on cutting ability of different hormones treatment was significant.The effect of low concentration of soaking for 3 h was generally higher than treatment with high concentrations of 1 min.The rooting numbers were the best 5.26 under the treatment 100 mg/L IBA 3 h,rooting property was the best,the rooting index was 45.148.The rooting rate（52.08%） and root length（9.3 cm） were the best by soaking for three hours under water.The rooting ability showed the best by using vermiculite,in which the rooting rate was 30.67%,rooting index was the highest 8.661.among mixing matrix,the best was peat∶perlite∶red=1∶2∶1,with the highest rooting rate of 26.67%.
出处
《北方园艺》
CAS
北大核心
2010年第22期84-89,共6页
Northern Horticulture
基金
国家科技支撑计划子专题资助项目(2006BAD18B103)
国家林业局西南地区生物多样性保育重点实验室资助项目
关键词
能源树种
川滇桤木
插穗
生根能力
energy species
Alnus ferdinandi-coburgii
cutting
rooting ability
