植物生长调节剂对红果黄檀扦插生根的影响  

Effect of Plant Growth Regulators on Cutting Rooting of Dalbergia tsoi

作　　者：吴金群 韦建杏 田乐宇 郑伟 余雪标[1] WU Jinqun;WEI Jianxing;TIAN Leyu;ZHENG Wei;YU Xuebiao(College of Forestry,Hainan University,Haikou,Hainan 570100,China;Hainan Academy of Forestry Sciences(Hainan Mangrove Research Institute),Haikou,Hainan 570100,China)

机构地区：[1]海南大学林学院,海南海口570100 [2]海南省林业科学研究院(海南省红树林研究院),海南海口570100

出　　处：《热带农业科学》2024年第1期56-61,共6页Chinese Journal of Tropical Agriculture

基　　金：海南省省属科研院所技术创新专项“海南降真香基源植物资源收集、繁殖和栽培”(No.KYYS-2021-19)。

摘　　要：为促进红果黄檀规模化开发利用,探究红果黄檀扦插繁殖技术,以1~2年生红果黄檀枝条为试验材料,采用正交试验设计,研究不同植物生长调节剂种类(NAA、IBA、ABT1号)、浓度(250、500、1 000 mg/L)和浸泡时间(2、4、8 h)对红果黄檀扦插生根的影响。结果显示:红果黄檀以皮部生根为主,植物生长调节剂的种类、浓度和浸泡时间均会对红果黄檀扦插生根的效果产生影响;较适宜红果黄檀扦插成活率、生根率、总根数和最长根长的组合为A_(2)B_(2)C_(3)(500 mg/L的IBA浸泡8 h);较适宜扦插生根数的组合为A_(2)B_(3)C_(1)(1 000 mg/L的IBA浸泡2 h);较适宜扦插新枝生长的组合为A_(1)B_(1)C_(1)(250 mg/L的NAA浸泡2 h)。适宜红果黄檀扦插的组合为A_(2)B_(2)C_(3)与A_(2)B_(3)C_(1),其生根率分别为75.56%和61.90%,可以有效提高红果黄檀的扦插成活率,为今后红果黄檀的扩繁和开发利用提供技术支持。To promote the large-scale development and utilization of Dalbergia tsoi Merr.et Chun,cutting propagation technology was explored.One-to two-year-old D.tsoi D.tsoi was used as the experimental material,and an orthogonal experimental design was adopted.The effects of different plant growth regulators (NAA,IBA,and ABT1),concentrations (250,500,and 1 000 mg·L^(–1)),and soaking times (2,4,and 8 h) on the rooting of D.tsoi cutting were studied.The results showed that D.tsoi was rooted mainly in the skin,that plant growth regulator species had the best effect on the rooting of D.tsoi cuttings,and that the soaking time was the worst.The optimal combination of cutting survival rate,rooting rate,total number of roots,and root length was A_(2)B_(2)C_(3) (soaked in 500 mg·L^(–1) IBA for 8 h).The combination of the rooting numbers of the cuttings was A_(2)B_(3)C_(1) (soaked in 1 000 mg·L^(–1) IBA for 2 h).The combination suitable for the growth of new shoots of cuttings was A_(1)B_(1)C_(1)(soaked in 250 mg·L^(–1) NAA for 2 h).The recommended combinations of D.tso cutting were A_(2)B_(2)C_(3) and A_(2)B_(3)C_(1),with rooting rates of 75.56%and 61.90%,which could effectively improve the survival rate of D.tso cutting and provide technical support for the expansion,development,and utilization of D.tso in the future.

关 键 词：红果黄檀 扦插繁殖 正交试验 植物生长调节剂 

分 类 号：S792.28[农业科学—林木遗传育种]