摘要
以鹿角杜鹃当年生木质化枝条为材料,采用基质、激素种类及其浓度三因素析因设计,研究各因素及其交互作用对鹿角杜鹃扦插育苗的影响,并运用隶属函数法对各处理组合的育苗效果进行综合评价。结果表明:3个主因素中,激素种类对育苗效果影响最大,激素浓度其次,两者对绝大部分育苗指标的影响达到显著水平;扦插基质影响相对较小,仅对愈伤率、生根率及扦插苗地上部分生长指标有显著影响。两因素交互效应中,激素种类×浓度的交互效应最大,对除新梢数、新梢长外的所有指标有极显著影响;基质×激素浓度互作主要显著影响插穗生根指标;基质×激素种类效应最小,仅对愈伤率、新梢率有显著影响。三因素交互效应对部分生根指标也有显著影响。隶属函数综合评价表明:腐殖土+河沙(3∶1)基质与50 mg·L-1GA3组合的隶属值最大,该处理在所有组合中生根率(78.33%)、老叶留存率(90.00%)最高,腐烂率(8.33%)最低,其他育苗指标也有良好的表现,为鹿角杜鹃扦插育苗的最佳组合。
Cuttings of annual woody branches of Rhododendron latoucheae were treated with different hormone types and concentrations in different growing media and the influences of the three factors and their interaction on the cutting propagation were studied using factorial design. The propagation effect of each factor combination was comprehensively evaluated by the subordinate function method. The results showed that, the hormone types had the greatest influence on cutting propagation among the three main factors, followed by hormone concentrations, and the two factors had significant influences on the most cutting propagation parameters. Media had the least influence on cutting propagation, and it nevertheless had significant influence on callusing percentage, rooting percentage and above - ground growth parameter. The analysis results of the interaction of the three factors revealed that, the interaction of hormone types and the concentrations had the biggest effects on cutting propagation, and it brought about most significant difference on all parameters except the number and the length of new shoot. The interaction of media and hormone types had significant influence on rooting parameters. The interaction of media and hormone concentration was least, with significant influence only on callusing percentage and new shoot percentage. The interaction of media, hormone types and concentrations also had significant influences on several rooting parameters. The results of comprehensive evaluation using the subordinate function method showed that the combination of soil ＋ sand （3 ： 1 ） medium and GA3 （50 mg＂ L- 1 ） had the biggest value of subordinate function, and it led to the highest rooting percentage （78.33%） and retention percentage of old leaves （90. 00% ） , and the lowest rotting percentage （8. 33% ）. The other propagation parameters also well performed with the combination in comparison with all other combinations. Thus, this combination should be best for cutting propagation of Rh. latoucheae.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2014年第3期45-54,共10页
Scientia Silvae Sinicae
基金
科技部国际科技合作项目(2007DFA31410)
江西省学科带头人培养计划项目(2010DD00500)
江西省星火计划项目(2008CX06500)
江西省科技支撑项目(20122BBF60100)
关键词
鹿角杜鹃
扦插繁殖
基质
激素
育苗指标
Rhododendron latoucheae
cutting propagation
media
hormones
propagation parameters
