不同接穗无性系对银杏嫁接树生长影响及材用无性系初选

Effect of different scion clones on Ginkgo grafting trees growth and preliminary selection of superior clones for timber

研究了不同穗砧组合的砧木胸径,接穗一级分枝数量、基径、垂直角度的差异,进行了隶属函数综合评价并初选出了材用无性系,结果表明：（1）不同穗砧组合的银杏嫁接植株砧木胸径及其材积、接穗一级分枝基径及其材积、接穗一级分枝数的差异显著,且变异系数较高,不同接穗一级分枝的垂直角度也存在显著性差异和较高的变异系数。（2）适于高接换头的材用穗砧组合有46^#、12^#、48^#、47^#、36^#、27^#、37^#、10^#、26^#、54^#,可作为果材兼用型银杏园经营。（3）适于材用的接穗无性系有49^#、12^#、50^#、68^#、36^#、46^#、29^#、37^#、69^#、33^#,有作为用材无性系培养的潜力。

The differences of scion primary branch number, base diameter, vertical angle and root stock DBH of scion-root stock combinations were studied. It was to make comprehensive assessment of the membership function of scion-root stock combinations to preliminarily select of superior clones for timber. The results were as follows：（1） The difference of the number, base diameter, volume of scion primary branch and DBH and volume of root stock of scion-root stock combinations were significant, its＇ coefficient of variation was high, and the vertical angles of scion primary branch were the same as the above.（2） On the base on screening scion-root stock combination for timber for top-grafting, better scion-root stock combinations are 46^#、12^#、48^#、47^#、36^#、27^#、37^#、10^#、26^#、54^#, which were suitable for as ginkgo garden for fruit and timber to operate.（3） On the base on screening scion clones for timber for grafting, better scion clones are 49^#、12^#、50^#、68^#、36^#、46^#、29^#、37^#、69^#、33#, which were potential As the timber clones cultured.