开花

Good callus with high regeneration frequency can be obtained when scutellum of embryo at 25 days after pollination were used as expla...

最佳取材时间在开花后 15d左右，而对于在开花后 2 5d取的大龄胚，若仅挑取盾片组织进行接种，也可以获得质量较高和再生能力较强的愈伤组织

A mig (mannose insensitive germination) mutantpool, which was created with T-DNA insertion by Kenneth Feldmann, University ofArizona (ecotype Wassilewskija-2, Ws-2), was obtained from the Nottingham ArabidopsisStock Centre, UK. mig3 is one line of the mutant pool, which was thought as aputative mutant for having a high germination rate (about 70%) on MS media containingabout 5-7.5 mM mannose. Lately, the mig3 was found there are some special characteristicsin two French labs by Laurent Signore and Marlire Dieuaide.

本文作者就是以这一突变体为研究对象，开展了有关控制mig3突变体的基因的定位研究研究；并同时开展了在几种糖及其衍生物诱导下的光合作用有关基因表达的研究；这一突变体在开花前后几种糖分含量的调查；开花习性及形态方面的调查。

This paper has studied the physiological and biochemical changes during the period of forming strong buds of tree peony, and expect to provide academic basis for extending its view value and economic benefit . The main results are as the following:1 Under the field condition, Characteristics of photosynthesis of tree peony are very regular. From before blooming to the prophase of abducting buds that after blooming ,that is April,May and June,the net photosynthetic rate of tree peony is higher than the other period .It indicates that this period is very important for accumulating photosynthetic products of tree peony . So, if we want to get quality flower of tree peony ,it is very important to strengthen the management of tree peony cultivation and to ensure provide the fertilizer and water.2 From the middle ten days of June, with the time elapsing and with the environment conditions worsening, the characteristics of photosynthesis of tree peony decline deeply. But it is different among different tree peony breeds. For example , cv. Wu Long Peng Sheng can also has higher net photosynthetic rate, it indicates that cv. Wu Long Peng Sheng is super than the other two tree peony breeds when adapting the environment conditions and cv. Wu Long Peng Sheng has wide prospect to extend .3 The main factors of effecting the characteristics of photosynthesis are stomatal factor and non-stomatal factor ,that is the ability of photosynthesis of leaf cells. Under the environment of high light intensity in midsummer, if overshadow tree peony properly, then it can slow the declining of chlorophyll content, and increase the net photosynthetic rate and benefit for the accumulating of photosynthetic products.4 The content of soluble sugar in the root of tree peony is the highest among different organs during the period of forming strong buds . According to analyse ,we believe that the soluble sugar will compose starch then, and provide the solid base of material for the growth and development next year. It provide us strong academic basis of adopting the method of cultivating root and protecting root under thefield environment conditions .In other words ,it will help to increase the health level of the whole plant of tree peony and will be beneficial to forming quality tree peony flower if we strengthen the management of root. 5 To tree peony, the endogenesis hormone is important for its growth and development .In the prophase ,that is about the blooming of tree peony and the mid-summer ,IAA and ZR contents are higher and GA content is lower and its changes are very little, and the content of ABA is decreasing . This indicates that IAA and ZR act the important promote function for growth and development of tree peony in this period, and the function of GA is not important. Bur in the period of anniversary senescence of tree peony , the content of IAA and ZR begin to decrease ,while the ABA content has a certain rebound .T

本研究对几个牡丹品种壮芽形成过程中的某些生理生化变化做了研究，以期了解牡丹生长发育过程中生理生化的变化规律，探讨大田栽培条件下提高牡丹花质量的栽培措施和管理技术，为提高牡丹的观赏价值和经济效益提供理论依据，结果如下：1 大田栽培条件下，牡丹光合特性在生长发育过程中表现出极强的规律性，牡丹各品种的光合速率从牡丹开花前，到牡丹花谢后的花芽诱导期前期（6月10日之前），也就是在4、5、6月份，各牡丹品种的净光合速率相对与其他时间都维持在比较高的水平，这说明，在这段时间，是牡丹光合产物积累的重要时期，因此，要保证得到高质量的牡丹花，在这段时间加强对牡丹的栽培管理，保证这个时期的肥水供应十分重要。2 从6月中旬后，随时间的推移，环境条件的恶化，牡丹的光合性能剧烈下降，但是不同牡丹品种间仍有差异，比如，乌龙捧盛仍可维持较高的光合水平，这说明了乌龙捧盛这个牡丹品种对于环境的适应性较之其他牡丹品种高，有着广泛的推广前景。3 影响牡丹光合性能的主要因子是气孔因素和非气孔因素即叶肉细胞的光合能力，在盛夏高温高光强的环境条件下，对牡丹进行适当遮荫，能缓解牡丹叶绿素水平的下降，适当提高Pn，有利于光合产物的积累。4 可溶性糖在牡丹各品种的壮芽形成过程中，根中可溶性糖的含量在牡丹各部位中始终维持最高水平，分析认为这些可溶性糖在根系中进一步合成淀粉等储藏性物质，为来年牡丹的生长提供雄厚的物质基础，这为我们在大田栽培条件下对牡丹采取养根护根的栽培措施提供了有力的理论依据，即在大田栽培条件下，加强对牡丹根系的管理，有助于提高牡丹整株的健壮程度，有益于形成高质量的牡丹花。5内源激素对牡丹的生长发育调节作用是十分明显的，在前期，即开花前后和盛夏，IAA和ZR含量维持在比较高的水平，GA含量低且变化不明显，ABA含量逐渐降低，说明了IAA和ZR对牡丹在这段时间内的生长发育起到重要的促进作用，GA的作用不是很明显，ABA可能在高温高光强下有明显的升高，也说明了ABA的确有一些促进作用，但是到了牡丹周年衰老期，IAA和ZR的含量开始下降，ABA含量却有了一定程度的反弹，说明了IAA和ZR的作用开始降低，ABA起到了促进衰老的作用

In our results, the sweetsop flowering time was during the last third of May to the early July in Beijing greenhouses. 6.9 to 6.23 was the very stage which had more flowers and high set rate. We could use this period for artificial pollination to enhance the output.

结果表明：在北方日光温室环境条件下，番荔枝自然开花集中时间为5月下旬到7月上旬，6月9~23日，是番荔枝开花数量多并且坐果率较高的时期，生产中可充分利用这一时期的人工授粉提高坐果量。

The phenophase, growth speed, structure of tussock, bloom habits, yield of new russian wildrye strain were studied, The results showed that the new strain has good traits of strong cold and drought-resistance, turning-green early, fast development and long vegetative growing period, more tillers, developed rootsystem, high yield and bloom trimly. It is suitable to being planted in arid and semi-arid region.

对新麦草新品系及对照山丹新麦草的物候期、生长速度、草层结构、开花习性、产量性状等生物学特性和生产性能的研究结果表明，该品系具有抗寒、耐旱性强、返青早、生长发育快、青绿持续期长、分蘖多、须根系发达、开花整齐和产量高等优良特点，适宜于干旱半干旱地区栽培，具有很好的推广种植前景。

In Arabidopsis thaliana, flowering was regulated mainly by photoperiod pathway, vernalization pathway, autonomous pathway, and GA pathway.

在拟南芥中，植物开花途径主要有春化促进途径、光周期促进途径、自主开花途径及依赖于赤霉素的途径等。

The results indicate that the virosis plants and non virosis plants differed markedly in the free proline contents of anther and in the pollen germination rate.

开花前1d病株花药中游离脯氨酸含量比健株的低26.24％－39.96％，开花当天病株上的花粉萌发率比健株的低14.35％－33.31％。

The results showed that the prune degree is of the upright effects in the florescence control and flowers increasing, which are integrating with the mass prune, middling prune and bit prune. The prune time is influenced by atmospheric temperature, the abloom periods and the prune degree. The bloom characters, the flower numbers and the plant resistance of the Roses are influenced by the quality and types of the fertilizers.

试验结果表明：修剪强度对月季花期调控和增加花量具有较大的效应，采用强修剪、中度修剪和弱修剪相结合的修剪方式有利于调控花期；修剪时间受气温、开花周期和修剪强度等多因素影响；施肥数量和施肥种类影响月季开花的质量、数量和抗逆性。

Heather " the original intention of one word is " abloom Shi Nan ", it originates in Europe to be taken to Xi Yayi formerly, among them the broom Chinese photinia that make tea uses , chinese photinia of local name Scotland, when blossomming, of bell form pink confuse your floret to open full branch, once was the main vegetation of a lot of moorland of Western Europe and boreal Europe, have person again for " the mist in hill .

Heather&一字的原意为&开花的石楠&，它原产于欧洲至西亚一带，其中泡茶用的帚石楠，俗名苏格兰石楠，开花时，钟形的粉红色迷你小花开满枝头，曾经是西欧及北欧许多荒地的主要植被，又有人称之为&山中薄雾。

Acephala By using a pair of primers based on BnARC1 sequence, BoARC1 was isolated using RT-PCR from stigma.

Northern杂交分析表明，BoARC1特异性的在植株开花或接近开花时期的柱头中表达。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了