海南油茶种苗高位嫁接适宜砧木筛选  

Screening of Suitable Rootstocks for Seedling High-Position Grafting of Oil-tea Camellia in Hainan

作　　者：夏腾飞 冯依欣 王春梅 陈加利 孙秀秀[1,2] 陈业光 郑道君 Xia Tengfei;Feng Yixin;Wang Chunmei;Chen Jiali;Sun Xiuxiu;Chen Yeguang;Zheng Daojun(National Germplasm Resource Chengmai Observation and Experiment Station,Institute of Tropical Horticulture Research,Hainan Academy of Agricultural Sciences,Haikou,571100;Sanya Institute,Hainan Academy of Agricultural Sciences,Sanya,572025)

机构地区：[1]海南省农业科学院热带园艺研究所,国家种质资源澄迈观测实验站,海口571100 [2]海南省农业科学院三亚研究院,三亚572025

出　　处：《分子植物育种》2024年第24期8195-8202,共8页Molecular Plant Breeding

基　　金：海南省省属科研院所专项(KYYS-2021-27);海南省重点研发项目(ZDYF2023XDNY026);海南省农业科学院引进人才科研启动项目(HAAS2023RCQD13)、海南省农业科学院科技创新团队稳定引导项目(HAAS2023TDYD05);三亚崖州湾科技城项目(SCKJ-JYRC-202258)共同资助。

摘　　要：为筛选到适合海南油茶种苗高位嫁接的砧木,本研究以海南本地越南油茶、高州油茶、普通油茶、浙江红花油茶、广宁红花油茶、香花油茶和油茶育成品种等17份油茶种质的幼苗为砧木,‘琼科优1号’良种一年生枝条为接穗,筛选海南油茶种苗高位嫁接的适宜砧木。结果表明,海南本地越南油茶‘三江Y2-10’、‘五指山油茶’、‘三江10-1’和‘三江Y2-9’、高州油茶和广宁红花油茶在海南生长速度较快[株高介于(22.35±5.79)cm~(24.39±4.67)cm],比生长速度较慢的普通油茶、‘岑软2号’、‘岑软3号’和香花油茶[株高介于(8.60±1.07)cm~(16.10±3.60)cm]更适合作为海南油茶种苗高位嫁接砧木。此外,高州油茶、‘三江Y2-9’和‘五指山油茶’作为砧木时,嫁接成活率高且接穗生长量大,说明这3种油茶种质适合作为油茶良种‘琼科优1号’的种苗高位嫁接砧木。本研究可为海南其他油茶良种种苗高位嫁接快速繁育的砧木种类提供参考。To screen suitable rootstocks for seedling high-position grafting of oil-tea camellia in Hainan,seedling high-position grafting experiments were conducted with 17 oil-tea camellia germplasm seedlings,e.g.,Hainan local Camellia drupifera,C.gauchowensis,C.oleifera,C.chekiagoleosa,C.semisererata,C.osmantha and oil-tea camellia cultivars,as rootstocks,and one-year old branches of'Qiongkeyou 1'as scions.The results showed that several Hainan local Camellia drupifera accessions,such as'Sanjiang Y2-10','Wuzhishanyoucha','Sanjiang 10-1'and'Sanjiang Y2-9',along with C.gauchowensis and C.semisererata[seedling heights ranging from(22.35±5.79)cm to(24.39±4.67)cm]were grown faster than the four accessions,C.oleifera,'Cenruan 2','Cenruan 3'and C.osmantha[seedling heights between(8.60±1.07)cm and(16.10±3.60)cm],indicating the former six accessions were more suitable as seedling high-position grafting rootstocks in Hainan.Additionally,when C.gauchowensis,'Sanjiang Y2-9',and'Wuzhishanyoucha'were used as rootstocks,the survival percents of grafting seedlings were high and the scion growth were large,indicating these three germplasms are suitable rootstocks for seedling high-position grafting of'Qiongkeyou 1'.This study provides a rootstock selection reference for the rapid propagation of other oil-tea camellia varieties through seedlings high-position grafting in Hainan.

关 键 词：油茶 砧木 种苗高位嫁接 

分 类 号：S794.4[农业科学—林木遗传育种]