论文部分内容阅读
在英国栽培的欧洲李品种,生产上主要以无性繁殖的樱桃李的Myrobalan B,欧洲李的Brompton及Pershore和乌荆子李的 St.Julien A等作砧木。尤其最后一种在英国应用最广泛。这些砧木与接穗亲合性良好,易于繁殖、产量高,但其中没有一种能构成高产而为现代化集约栽培所必不可少的矮化树。即使是St.Julien A和 Pershore两种砧木,能显著减弱嫁接树的生长势,也仅仅能构成半矮化树而已。以比西氏樱、山樱和沙樱作李的砧木,虽能使树体显著矮化,但存在嫁接亲和力不良,结合不牢等弊病。本文是对试材树进行若干指标的比较结果。该试验树为Beakbane在东茂林选育出的E340系的4种无病毒的St.Julien型砧木(其代号为E430/4.6、E340/3.52、E340/1.21及E340/10.6),
The cultivars of European plum, cultivated in the United Kingdom, are stocked mainly with Myrobalan B, asexual cherry plum, Brompton and Pershore from European plum, and St. Julien A, a member of the genus Vitex. In particular, the last one is the most widely used in the UK. These rootstocks have good affinity with the scion, are easy to reproduce, and have high yields, none of which can constitute a dwarf tree that is essential for modern intensive cultivation. Even the two rootstocks, St. Julian A and Pershore, significantly reduce the growth potential of the grafted tree and can only form semi-dwarf trees. The rootstocks that make the leaves of Bessie’s cherry, the cherry tree and the sakura cherry can significantly shorten the tree body, but there are disadvantages such as poor affinity for grafting and lack of bonding. This article is a comparison of several indicators of the test tree. The test tree is E440-type four virus-free St.Julien rootstocks (codenamed E430 / 4.6, E340 / 3.52, E340 / 1.21 and E340 / 10.6)