4种越南金花茶嫁接亲和力试验

Graft Compatibility of Four Vietnamese Section Chrysantha Species

为研究所引进的越南金花茶的嫁接亲和力,以塔姆岛金花茶、箱宁金花茶、箱田金花茶、罗斯曼金花茶4种越南金花茶为嫁接接穗,以香花油茶、茶花‘黑牡丹’、‘毛紫’茶花、普通油茶为嫁接砧木,对4种越南金花茶嫁接亲和性进行初步研究。结果表明,塔姆岛金花茶分别与香花油茶、茶花‘黑牡丹’、‘毛紫’茶花、普通油茶4种砧木小苗开展嫁接,其中与香花油茶嫁接成活率、抽梢率以及新稍生长情况最好,分别为96.8%、93.5%、13.8 cm;罗斯曼金花茶与香花油茶砧木的2种不同砧高以及3种生长调节剂处理开展的12种组合嫁接效果最好,成活率达90.0%的组合有6种,达80.0%的有3种,其他3种也达70.0%以上;4种越南金花茶分别与香花油茶大砧嫁接,其中罗斯曼金花茶和塔姆岛金花茶的成活率、抽梢率、新稍长生长情况最好,箱田金花茶和箱宁金花茶成活效果较差;塔姆岛金花茶与香花油茶开展的不同时间的小苗嫁接和大砧嫁接对比表明,8月嫁接成活效果最好。4种越南金花茶中,塔姆岛金花茶和罗斯曼金花茶与4种砧木嫁接亲和力最高,箱田金花茶和箱宁金花茶与4种砧木嫁接亲和力较低。4种砧木品种中,香花油茶与越南金花茶新品种嫁接亲和力最好,其次是‘毛紫’茶花。

The paper aims to study the grafting compatibility of the imported Vietnamese section Chrysantha species with different rootstocks. Four kinds of Vietnamese section Chrysantha species： Camellia tamdaoensis,C. phanii, C. hakodae, C. rosmannii were taken as grafted scion, C. osmantha, C. japonica‘Heimudan＇, C.‘Maozi＇, C. oleifera were tested for grafted rootstock. A preliminary study was conducted on the graftingcompatibility of the four Vietnamese section Chrysantha species. It was found that when grafted on four youngrootstock seedlings： C. osmantha, C. japonica‘Heimudan＇, C.‘Maozi＇, and C. oleifera, C. tamdaoensis had thehighest survival rate and sprouting rate and the largest new stem growth, which was 96.8%, 93.5% and 13.8 cm,respectively. When tested with 12 combinations of two different heights of rootstocks and three different typesof growth regulators, C. rosmannii and C. osmantha showed the highest compatibility. In particular, six of thetwelve combinations resulted in 90% survival rate, three combinations led to 80% survival rate and the otherthree led to above 70.0% for C. rosmannii when grafted on C. osmantha. When the four Vietnamese section Chrysantha species grafted on big C. osmantha rootstocks, C. rosmannii and C. tamdaoensis showed the highestsurvival rate and sprouting rate and the best new stem growth, and C. phanii and C. hakodae had the worst survival rate. It was also found that the optimal month for C. tamdaoensi grafting with C. osmantha as rootstockwas August. Overall, C. tamdaoensis and C. rosmannii performed better than the other two Vietnamese section Chrysantha species on the tested rootstocks. C. osmantha was found as the best rootstock for these Vietnamesesection Chrysantha species, followed by C.‘Maozi＇.