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- There is a high pollen count in the air. 空气中有很高的花粉计数。
- Stamen is in the middle of a flower and may produce pollen. 雄蕊长在花的中央,能产生花粉。
- A microscopic fossil, as of a pollen grain or unicellular organism. 微体化石一种微小的化石,如花粉粒或单细胞有机体的化石
- The workers have little pollen baskets on their legs. 工蜂脚上有装花粉的小"篮子"。
- Anther is a part of a flower that contains the pollen. 花药是花的雄蕊上带花粉的部分。
- The oocyte is effectively a tetraploid cell. 卵母细胞是有效的四信体细胞。
- The innermost wall of a spore or pollen grain. 内壁孢子或花粉粒最深处的壁
- Pollen sterile blossoms lack normal turgor. 花粉不育的花朵缺乏正常的膨压现象。
- The pollen is shed directly on the stigma. 花粉直接散落在柱头上。
- Some people have an allergy to pollen. 一些人对花粉有过敏反应。
- Nectar and pollen are very nutritious. 花蜜和花粉是很有营养的。
- Pollinated by wind-dispersed pollen. 风媒传粉的通过风的飘散来传播花粉的
- Facultative Apospory in Tetraploid Paspalum distichum L. 四倍体双穗雀稗兼性无孢子生殖的研究。
- Rooting Culture of Tetraploid Robinia Pseudoacacia L. 四倍体刺槐组培瓶苗生根培养研究。
- Advances in Research of Grape Tetraploid Induced with Colchicines. 秋水仙素诱导葡萄四倍体的研究进展。
- Both the pollen grains and the gynoecia are active. 花粉粒和雌蕊都具有活力。
- Seeds and pollen are spread by the wind. 种子和花粉是随风传播的。
- There is a high pollen count inthe air. 空气中有很高的花粉计数。
- A study on pollen morphology of the genus Vitis L. 葡萄属植物花粉形态的研究。
- Studies on cryopreservation of tree peony pollen. 花粉超低温保存研究。