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The androecium were consisted of 3 stamens,two of which were connate ,separating or partial combination.

摘 要 对南瓜的两性花进行外部形态及结构的研究,结果表明:南瓜的两性花可有子房上位花、子房半下位花和子房下位花三种类型:花萼、花冠均为5,合瓣;雄蕊3,其中有两枚各由两个雄蕊合生而成,分离和部分联合,花药结构特殊,花粉发育正常;雌蕊具有单个或两个柱头及花柱。

Tumefaciens mediated transformation using cotyledonary node as explants was optimized; 3 methods including cutting chapiter, ovary injection and chapiter spreading for pollen tube pathway was compared. Cutting chapiter and ovary injection can both achieve insect resistant gene tranformants.

优化了以子叶节为外植体的农杆菌介导转化技术;比较了切割柱头、子房注射和子房涂抹3种花粉管通道法处理授粉后黄瓜子房的转化效果,切割柱头和子房注射均可成功获得黄瓜抗虫转基因植株。

In the early period of ovary development of Castanopsis delavayi, the size of ovules relative to the ovary cavity is small and rich trichomes can be found before the development of the megaspore mother cell.

高山栲在子房发育的早期胚珠在子房中占有的体积相对小,在大孢子母细胞发育前子房中已经有丰富的毛被。

Pollen grains germinated soon after pollination. Pollen tubes grew first into the intercellular space of branched penniform stigma and then through the intercellular space of transmitting tissue into the top of the ovary, further penetrating the ovary wall and primine to the micropyle. Green fluorescence was found in both pollen and pollen tubes.

结果表明:授粉后,花粉随即萌发,花粉管进人羽毛状柱头分支结构的细胞间隙,继续生长于花柱至子房顶部的引导组织的细胞间隙中,而后进入子房,在子房壁与外珠被之间的缝隙中向珠孔方向生长,花粉与花粉管均具有明显的绿色荧光。

With tile ovary maturing, the orifice was narrowed because of tile ovary growth at last fused completely. The gynoecium is composed of a single carpel.(1) In tile series developmental sections of ovary, the ovular primordium was initiated on the adaxial meristem when tile mouth of ovary was formed.

子房由1枚心皮构成;(4)从子房发育过程的切片看,该植物的胚珠是在子房发生后不久发生的,子房上的圆孔形成时,从近轴侧的分生组织发生胚珠原基,由胚珠原基分化出珠被与珠心。

Calyx adnate to ovary to varying degrees; sepals either connate beyond attachment to ovary and forming a tube or free and forming false tube above ovary; tube cupular, urceolate, campanulate, funnelform, or cylindric, often ribbed or tessellate on adaxial surface, constricted or open at throat, throat with or without narrowly projected, contiguous shelf of tissue; lobes 3, erect, spreading, or reflexed.

花萼不同程度地的贴生于子房;萼片或者合生超过附着的子房和形成一筒部或离生并且形成假的筒部在子房以上;筒部杯状,瓶形,钟状,漏斗状,或圆筒状,在正面上的通常棱或成棋盘格状,裂片3,直立,平展,或反折。

Ovary superior, 2-carpellate; locules 2 and each with 2 ovules, or 4 and each with 1 ovule; ovules nearly atropous, semianatropous, or anatropous.

子房上位,2具心皮;子房2 室,每室2胚珠,或者子房4 室,每室1胚珠;胚珠近直生,半倒生,或倒生。

Female flowers with an entire bract adnate to ovary, free at apex; bracteoles 2, adnate to ovary, free at apex; sepals 4, adnate to ovary, free at apex; style elongate with recurved branches; stigmas carinal, 2-lobed, plumose.

雌花具一全缘的苞片贴生于子房,离生在先端;小苞片2,贴生于子房,免费在先端;萼片4,贴生于子房,离生在先端;花柱拉长具下弯的分枝;柱头carinal,2裂,羽状。

The cause of hindering the gynospore formation was short of boronin chestnut orchard,which led to the poor pollination and a decrease ofendogenous GA1/3, iPAs level and an increase of endogenous ABA level in ovary,which restrained the mother cell division of gynospore.The low level ofendogenous GA1/3,iPAs contents and the increase of endogenous ABA contentcaused a serious lack of reducing sugar,starch,protein and potassium in ovary,which led to a cease of young embryo development.

其中,大孢子形成过程的停滞是由于栗园B素缺乏,致使授粉不良和子房内源GA1/3、iPAS等含量下降,ABA含量上升,从而抑制大孢子母细胞分裂;幼胚发育停滞则是由于子房内源GA1/3、iPAS等生长类激素的上升启动受阻,继续处于低水平,ABA上升,使子房中还原糖、淀粉、蛋白质和K素积累受阻,造成营养严重缺乏。

Longitudinal section of ovary of bisexual flower of half-inferior ovary,showing the part of under that heal with receptacle tissue.out for receptacle tisse,inside for ovary,×40

子房半下位两性花子房的纵切面,为下方与托杯组织愈合的子房部分,外方细胞较大的为托杯的组织,内方为子房,两者间形成较明显的界线。

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