两种珍稀濒危金花茶组植物的嫁接繁殖研究

Grafting Propagation of Two Rare and Endangered Yellow Camellia Species

以毛瓣金花茶和显脉金花茶为接穗,红皮糙果茶、大果红花油茶、宛田红花油茶和岑溪软枝油茶为砧木,进行嫁接繁殖试验,分析不同砧木和嫁接方法(芽苗芽接、芽苗根接和小苗嫁接)对两种金花茶嫁接成活率和幼苗生长的影响。结果表明,两种金花茶均以红皮糙果茶为砧木的嫁接成活率最高,且嫁接苗的株高和地径均显著(p<0.05)高于其他3种砧木处理。毛瓣金花茶芽接成活率高于根接,且芽接苗的长势优于根接苗;而显脉金花茶表现为芽接成活率低于根接,芽接苗长势弱于根接苗。两种金花茶小苗嫁接的成活率均明显低于芽苗砧嫁接。以红皮糙果茶为砧木,对毛瓣金花茶进行芽苗芽接,显脉金花茶进行芽苗根接,均能取得较好的嫁接效果。

s:Taking Camellia pubipetala and C.euphlebia as scions,C.crapnelliana,C.semierrata,C.polyodonta and C.oleifera'cenxiruanzhi'as rootstocks,the experiment of grafting propagation was carried out,and the effects of different rootstocks and grafting methods(bud grafting,root grafting and seedling grafting)on the survival rate and seedling growth of two yellow Camellia species of were analyzed.The results showed that the survival rate of two yellow Camellia species was the highest when C.crapnelliana was used as rootstock,and the plant height and ground diameter of the grafted seedlings were significantly higher(p<0.05)than those of the other three rootstocks.The survival rate of bud grafting of C.pubipetala was higher than that of root grafting,and the growth of bud grafting seedlings was better than that of root grafting seedlings.However,the survival rate of bud grafting of C.euphlebia was lower than that of root grafting,and the growth of bud grafting seedlings was weaker than that of root grafting seedlings.The survival rate of seedlings grafting of two yellow Camellia species was significantly lower than that of the bud seedling rootstock grafting.Taking the C.crapnelliana as the rootstock,bud grafting for C.pubipetala and root grafting for C.euphlebia could achieve good grafting effect.