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萌发

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The experimental results showed that the absence of effective pollination in wild peonies under natural conditions, especially between different populations, was an important cause for the declining of seed adaptability, and that seed epicotyl dormancy is an important intrinsic factor in its sexual cycle which aggravated the scarcity of wild peony seedlings and populations in nature.

实验证明:在自然状态下野生牡丹缺乏充分的传粉,特别是居群间的传粉不足,导致其种子质量低下;而野生牡丹种子特殊的萌发特性,特别是严格的上胚轴休眠,则是导致其出苗率极低及自然状态下幼苗和种群稀少的重要内因。

The results of biochemical analysis indicated that the content of GA 3 increased and the content of ABA decreased in cotyledons during the breaking of epicotyl dormancy, and the contents of endogenous growth regulators changed only slightly in the endosperm. We suggested that cotyledons be a key part controlling the epicotyl dormancy in peony seeds.

生化测定结果表明:在低温打破牡丹种子上胚轴休眠过程中,子叶中的萌发促进剂GA3 含量明显升高,抑制剂ABA 含量显著下降;而胚乳中的各种激素含量则变化不大,胚轴中的激素变化无明显规律,因此认为子叶是控制牡丹种子上胚轴休眠的关键部位。

Seed germination characteristics of 7 spatially isolated populations of the endangered plant Euonymus chloranthoides were studied in the laboratory condition.

选取重庆特有濒危植物缙云卫矛7个相互间有不同程度空间隔离的种群,对其种子萌发特征进行研究。

The results showed that allelochemicals of all 10 kinds of donor species have allelopathy on seed germination of Eupatorium adenophorum, and allelopathy increased with the enhancing of concentration.

结果表明:10种供体植物的化感物质对紫茎泽兰种子萌发均存在化感作用,并且随着浓度的升高,化感作用逐步增强,紫茎泽兰种子发芽速度指数比发芽率更为敏感。

Scirpus pumilus had no reaction to any factor or combination and its seed germination rate was all zero.

矮草对任何因子或组合都无反应,其种子萌发率均为0。

Objective] To study the characteristics of florescence and pollen in Lagerstroemia speciosa.

[目的]研究大花紫薇的开花习性及花粉萌发特性。

The pollen germination rates of 11 cucumber varieties were mensurated in the different florescence and germination temperatures.

试验结果表明:12℃可作为不同品种花粉低温萌发时的选择温度。

As a result, germination rate under osmotic stress and RWC could be considered as good indices of drought tolerance and used for rapid evaluation for drought tolerance of foxtail millet.

谷子种子在甘露醇渗透胁迫条件下的相对萌发率与幼苗在适度控水条件下相对含水量的变化趋势一致,初步认为这两个指标可以作为苗期快速鉴定谷子抗旱性的筛选指标。

Protonema growth and gametophyte development of Encalypta ciliata are observed based on the cultivation of spore germination.

孢子的基础上,对其孢子萌发、原丝体发育及配子体发生的全过程进行了观察、描绘和照相。

The pattern of spore germination is of the Vittaria-type and the gametophyte development of the Drynaria-type.

孢子萌发类型为书带蕨型,原叶体发育为槲蕨型。

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呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

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