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种子植物

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Results showed that there were 37 species in the seed bank, which belongs to 11 families. For the species of seed bank, Gramineae, Compositea, Labiatae, Leguminosae, and Panunculaceae were dominant.

结果表明,(1)土壤种子库中共统计到37个物种,隶属于16科,其中禾本科、菊科、唇形科、豆科和毛茛科的植物占优势。

Fossil gymnospermous trees or climbing plants from the Devonian: seed ferns.

裸子植物化石树或攀缘植物,起源于泥盆纪;种子蕨。

A unisexual reproductive structure of gymnospermous plants such as conifers and cycads, typically consisting of a central axis around which there are scaly, overlapping, spirally arranged sporophylls that develop pollen-bearing sacs or naked ovules or seeds.

球果单性裸子植物的生殖器,例如针叶树和铁树目植物,一般由覆满鳞片和褶皱的中心轴构成,长螺旋状排列的孢子叶,孢子叶最终成为花粉囊或裸露的孢子或种子

A unisexual reproductive structure of gymnospermous plants such as conifers and cycads, typically consisting of a central axis around which there are scaly, overlapping, spirally arranged sporophylls that develop pollen-bearing sacs or naked ''.

球果单性裸子植物的生殖器,例如针叶树和铁树目植物,一般由覆满鳞片和褶皱的中心轴构成,长螺旋状排列的孢子叶,孢子叶最终成为花粉囊或裸露的孢子或种子

Don.methodswith the stem of sterile seedling and fresh plants as exophyte, ms as a basic medium, 6-ba and naa hormone were adopted as the experimental variables.resultsms +1.0 mg / l 6-ba +1.0 mg / l naa induced the best effect of callus; higher concentrations of 6-ba with high concentrations of naa made callus densification and higher rate.conclusion different plant hormones and their different concentration ratios have different effects on the callus of halenia elliptica d.

方法以椭圆叶花锚种子培养的无菌苗的茎和新鲜植株的茎段为外殖体,ms为基本培养基,分别以6-ba和naa两种植物激素为变量进行实验研究。结果ms培养基+1.0 mg/l 6-ba+1.0 mg/l naa对诱导椭圆叶花锚愈伤组织的形成效果最佳;高浓度的6-ba配合较高浓度的naa诱导的愈伤组织致密,出愈率高。

The inhibiting machanism of halophytic seeds by salinity is also discussed.

并讨论了盐度抑制盐生植物种子的机理。

OBJECTIVE To extract Harmine hydrochloride,an effective anticancer alkaloid ingredient in Preganum harmala seeds which was used by Uygur and Mongolian as a traditional medicine as microspheres for hepatic arterial embolization.

目的将从新疆民族药蒺藜科植物骆驼蓬种子中提取的抗肿瘤活性生物碱成分———盐酸去氢骆驼蓬碱,制成可供肝动脉栓塞的微球新剂型,对其处方设计及制备工艺进行研究。

Macromorphology of seeds and micromorphology of the seed-coat in 53 species and 5 varieties belonging to three genera (Smilax, Heterosmilax and Ripogonum) of Smilacaceae were observed under the light microscope and the scanning electron microscope. The seeds are spheroidal, hemispheroidal or trigonal-oblate in shape.

在光学显微镜和扫描电镜下对菝葜科Smilacaceae 3个属(菝葜属Smilax、肖菝葜属Heterosmilax和Ripogonum属)共53种5变种植物的种子形态及种皮微形态特征进行了研究。

Up to now, over 100 herbaria of 39 countries and districts have set up specimen loan and exchange programs with us.

还有8万号种子标本和7万号化石植物标本。

Jatropha the wonder plant produces seeds with an oil content of 37%.

麻风树属奇迹植物生产种子与含油量37%。

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