台灣野梨之復育（三）－－生育習性

The Recovery of Taiwan Native Pear (Pyrus koehnel Schneider)( Ⅲ)-- Growth Characteristics

台灣野梨（Pyrus kochnei）在台灣平地培育，與來自世界各地及本地的梨品系比較，有最大的生長速率，最大的開張性及分枝能力、較佳的抗白粉病能力，較淺的種子休眠性，但在美國梨國家種源庫，卻是最不耐寒的種類之一。初步高接「朝鮮洋梨」（Pyrus ussursiensis）.其果實可達350公克，以上諸特性顯示值得進一步進行高接梨比較試驗，以選出一理想品系取代橫山梨的‘果芽寄接供源’角色。

A indigenous pear of Taiwan, Pyrus koehnei, has been grown to evaluate the growth rate, tree expansion, branching, seed dormancy and powdery mildew resistance. Cold hardiness was evaluated at NCGR, OR, USA. The evergreen pear has higher growth rate, more branching number and wider angle, higher resistance to prowdery mildew and less seed dormancy than the other varieties. All these characteristics show a potential as a substitution for 'Hang-shan' pear in the forcing culture using flower bud grafting.