leaf stalk meaning in English
【植物；植物学】叶柄。
Examples
- Phyllodes are analogous to leaf blades , but are derived from petioles ( leaf stalks )
叶状柄与叶片是同功器官，但它源于叶柄。 - Mulberry , multi _ petalled ; upright flowers with black _ purple base , flat round buds , medium _ sized narrow leaves in dark green , stiff , slanting leaf stalks
深紫红色，台阁型。瓣基黑紫，花朵直上，花蕾圆尖。叶中长尖，深绿色。叶柄硬，斜生。株型直立。 - Above the skeleton of a fallen leaf stalks the dark shape of a spider out hunting for springtail or mite or whatever tiny invertebrate strays its way
在一片落叶的叶脉上，潜伏着一只蜘蛛的黑影，它正准备猎捕弹尾虫、螨虫，或是任何一种迷路的微小的无脊椎动物。 - The materials as explant in transformation come from birch leaf , stem segment and leaf stalk , and the spider toxin gene was used as foreign gene for this transformation experiment . it showed that the best explant was the big leaf , on which the transformation frequency was 22 % . by gus detection , there were 43 percent of the plants with kanamycin resistance , and 100 percent of positive result , by pcr amplification , was gotten from random sampling
利用双元载体的根癌农杆菌lba4404菌株( agrobacteriumtumefaciens ) ，含质粒pyhy (目的基因及npt 、 gus基因) ，对白桦试管苗茎段，叶柄，叶片三种外植体进行侵染，结果表明：大叶片生长势强，为转基因的最优外植体，转化率能够达到22 。