樟树北移耐寒性与形态特征的相关性研究

Camphortree and the Morphological Characteristics of Cold North Correlation

为了确定樟树北移的区域和耐寒樟树的选择,对黄淮地区引种樟树的现状进行了调查。结果表明:樟树的耐寒性与其形态特征特别是容易辨别的叶片和枝的形态特征有密切的相关性,并首次提出了樟树在北移地区选育时一定要选叶片主脉和侧脉在叶面上凸起叶背不明显为特征作为育种的依据之一。据此,将北移樟树分出了4个种(香樟、猴樟、油樟、黄樟)和9个类型(香樟的黄绿叶型、绿叶型、寒樟801(暂用名);油樟的大叶灰褐色皮型、大叶黄褐色皮型、大叶稀枝型、小叶红枝型、小叶绿枝型、小枝紫枝型)。按气候条件划分出了3个北移区域(淮河北移区、黄河北移区、海河北移区),不同的区域选择的香樟种和类型应有所不同。

To determine the camphor tree camphor tree north ot the region and the choice of cold on the Huang-Hual region we introduced the status of camphor was investigated. The results showed that we determined the cold tolerance of camphor and its morphological characteristics, especially easy to identify the morphological characteristics of leaves and branches were closely related,and the first time the camphor trees in the north area be sure to select breeding of leaf main vein and lateral veins in the leaf surface was characterized by raised abaxially obvious one as the basis for breeding. It is time, we would separate the north of the four kinds of camphor tree（Cinnamomum,Root-bark of Bodinier Cinnamon, Cinnamomum longepaniculaturn, Cinna,unnum porrecturn） and 9 types（Camphor yellow green leaf type,green leaf type, cold camphor 801 ;oil camphor large leaf brown skin type,large brown paper leaf,large leaf and thin branches type, small leave branch type, lobular type in stems, twigs purple branch type）. Classified according to climatic conditions northward out of three regions（north of Huaihe area, the Yellow River north district, Hai north area）, Camphor different regional options and types of species should be different.