senescence of leaves meaning in Chinese

叶的衰老

The characteristic colour changes which are associated with the senescence of leaves of deciduous trees in autumn .
在秋天落叶树的叶子颜色变化特征，是同衰老相联系的。
After regeneration experiment , two cultivars , cut flower shanchengzhiguang and japanese xiaohuang , were selected as target materials for genetic transformation in this paper . sag - ipt prolong the senescence of leaves . armed with sag - ipt , transgenic cut flowers with storage resistant , longer shelf life and longer flower period may be obtained
所选用的外源基因为抑制叶片衰老的sag - ipt基因，以期得到耐贮运、瓶插寿命长的切花菊山城之光和抗衰老、花期长的绿化小菊日本小黄。