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- Study on the north temperate of the seed plant in Qinling Mt. 秦岭种子植物区系中的北温带区系成分研究。
- Any of various vascular plants, including seed plants and ferns, having a conducting system of xylem and phloem. 导(维)管植物任何种类的维管植物,包括种子植物和蕨类植物,具有木质部和韧皮部导管系统
- Objective: To survey medicinal plant resources of the Chinese endemic genera of seed plants. 目的:报道中国种子植物特有属药用植物资源状况。
- Angiosperms The flowering plants constituting by far the largest phylum (Anthophyta or Angiospermophyta)of vascular seed plants. 被子植物:由显花植物组成的最大的一门维管种子植物。
- A minute opening in the ovule of a seed plant through which the pollen tube usually enters. 珠孔种子植物胚珠上的小开口,通常花粉管由此进入胚珠
- The tiny seeds planted ten years before had flowered. 10年前撒的种子这时已经开花了。
- In seed plants the protoxylem occurs at the innermost edge of the vascular bundles in stems, but external to the later-formed xylem in roots. 在种子植物中,原生木质部发生在茎的维管束的最内方,但在根中,位于后生木质部的外方。
- The fine,powderlike material consisting of pollen grains that is produced by the anthers of seed plants. 花粉,由种子植物的花药所产生的含有花粉粒的粉粒状的细致物质。
- Any of various vascular plants,including seed plants and ferns,having a conducting system of xylem and phloem. 导(维)管植物任何种类的维管植物,包括种子植物和蕨类植物,具有木质部和韧皮部导管系统
- The fine.powderlike material consisting of pollen grains that is produced by the anthers of seed plants. 花粉由种子植物的花药所产生的含有花粉粒的粉粒状的细致物质
- The fine, powderlike material consisting of pollen grains that is produced by the anthers of seed plants. 花粉由种子植物的花药所产生的含有花粉粒的粉粒状的细致物质
- There are 981 species of seed plants,belonging to 131 families and 513 generain Banqiao Mountainous Region(BMR). 据初步统计,安徽省板桥山地有种子植物131科,513属,981种。
- At the northwest foothill knoll of Bogda, it has seed plants 261 species belonging to 180 generas and 42 families.2. 主要研究结果和进展:1.博格达山西北麓低山丘陵区共有种子植物42科180属261种(含5个变种)。
- Pollen The MICROSPORES of seed plants, produced in large numbers in the pollen sacs, or stamens. 花粉:指种子植物的小孢子。
- Diversity and floristic characteristics of aquatic seed plants of Henan Province in China are discussed in the paper. 摘要论述了河南省水生种子植物的生物多样性及区系组成。
- A nonliving,water-resistant protective tissue that is formed on the outside of the cork cambium in the woody stems and roots of many seed plants. 栓皮一种无生命的、防水保护纤维,形成于许多种子植物的木质茎和根软木形成层的外部。
- Systematic grading distribution of sex for seed plants, gender plasticity and the cause leading to sex reversion are all introduced. 介绍了种子植物性别的可塑性和影响植物性别逆转的原因,比较了裸子植物和被子植物性别类型和繁育系统的异同。
- STUDIES ON THE COMPOSITION, CHARACTERISTICS AND GEOGRAPHIC ELEMENT OF THE FAMILY OF SEED PLANT FLORA IN QINLING MT. 秦岭种子植物区系科的组成、特点及其地理成分研究。
- The analysis on the tropical geographical elements of the seed plant flora in the Qinling Mt. 秦岭种子植物区系中的热带地理成分研究。
- A minute structure in seed plants,containing the embryo sac and surrounded by the nucellus,that develops into a seed after fertilization. 胚珠种子植物的一个小的结构,含有胚囊并被珠心所包围,施肥后长成种子