Stomatal opening in abaxial epidermis of clone zh4 , 1 . 70k 无性系zh4在不同时间叶下表面的气孔开张情况， 1 . 70k
2.
Stomatal opening in abaxial epidermis of clone bl1 , 1 . 70k 无性系bl1在不同时间叶下表面的气孔开张情况， 1 . 70k
3.
Description : evergreen trees , up to 25 m high ; twigs , buds , petioles , abaxial surfaces of leaves and peduncles covered with yellowish brown rigid hairs 形态特徵：常绿乔木，高达25米；小枝、芽、叶柄、叶背和花梗均被黄棕色糙伏毛。
4.
Examples include certain species of lycopodium and selaginella , which have two rows of lateral leaves and one or two rows of smaller abaxial or adaxial leaves 例如石松属和卷柏属，植物体上具有双行较大的侧生叶，还有1行或2行较小的生于近轴面或远轴面的叶。
5.
Early leaf development is artificially divided into three main stages : the initiation of leaf primordium , the establishment of leaf adaxial - abaxial polarity , and the expansion of leaf blade 早期叶片发育包括三个主要过程：叶原基的起始，叶片腹背性的建立和叶片的延展。
6.
Flower - heads narrowly campanulate , 16 - 19 mm long , ca . 6 mm across , usually 2 - 4 in terminal clusters ; peduncle 2 - 8 mm ; involucral bracts ca . in 7 series , ribbed on abaxial surface , apex spiny 叶互生，卵形，长3 - 5 . 5厘米，宽2 - 4厘米，先端短尖，基部近截形，边缘具疏齿，两面被长柔毛，具基出脉3条；叶柄长3 - 5毫米。
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The waves should be sheared waves for the anisotropic aeo device and longitudinal waves for the isotropic aeo device . geometrical relationships of anisotropic acousto - optic effect in ln crystal and kdp crystals are studied by tangent - match condition . curves of incident angle vs . abaxial angle , diffractive angle vs . abaxial angle , extreme frequency vs . abaxial angle and acousto - optic merit vs . incident angle vs . abaxial angle are systematically gained and the design parameters are also calculated 利用相切-匹配条件法研究了铌酸锂晶体及kdp晶体的反常声光互作用几何关系,系统地得到了以离轴角为自变量的各参数的计算公式及相应的关系曲线,通过数值分析方法给出了声光优值随中心频率的变化曲线并给出了器件的设计参数。
8.
Leaves thick leathery , obovate - lanceolate , obovate or oblong - lanceolate , 4 - 12 cm long and 2 - 3 . 5 cm wide , apex rounded , sometimes emarginated , base cuneate , abaxial surface thinly covered with a grayish to fawn indumentum at first , later glabrescent ; petiole 1 - 1 . 5 cm long , glabrescent 叶厚革质，倒卵状披针形、倒卵形或长圆状披针形，长4 - 12厘米，宽2 - 3 . 5厘米，顶端近圆形，有时微缺，基部楔形，下面初时薄被灰白色或淡土黄色丛卷毛，后近无毛；叶柄长1 - 1 . 5厘米，后近无毛。
9.
In this paper the floral ontogeny and the ovary development of rivina humilis l . were observed . the results showed that ( 1 ) the tepal primordia initiated in 2 / 5 spirals . the abaxial one initiated first , then the adaxial one , finally the lateral two initiated nearly simultaneously . the third one initiated on the position near the first tepal , and there is a gap between itself and the second tepal . ( 2 ) the 4 stamineal primordia initiated in one whorl at the same time . ( 3 ) the carpellary primordium initiated from the abaxial side of flower primordium ; the carpellary primordium grew upwards and towards axis after it was formed , therefore an elliptic orifice was formed at the adaxial position of ovary , which was the remainder of the mouth of ovary before the ovary was fused completely . with the ovary maturing , the orifice was narrowed because of the ovary growth , at last fused completely . the gynoecium is composed of a single carpel . ( 4 ) in the series developmental sections of ovary , the ovular primordium was initiated on the adaxial meristem when the mouth of ovary was formed 对数珠珊瑚的花器官发生和子房的发育过程进行了观察.结果表明: ( 1 )数珠珊瑚花被呈2 / 5螺旋状发生,远轴侧的1枚先发生,其次为近轴侧的1枚发生,最后侧方的2枚花被几乎同时发生,第3枚花被在靠近第1枚的位置发生,第2枚和第3枚之间有1个空隙; ( 2 ) 4枚雄蕊是同时发生的; ( 3 )心皮发生于分生组织的远轴侧,心皮原基形成后,向上向轴生长,在子房成熟前在近轴侧非正中位形成1个孔,该孔为心皮最终愈合前的残迹,到子房成熟时,因子房的生长孔被挤压缩小,在进一步的生长过程中愈合.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
10.
The sequence analysis revealed that the as1 gene encodes a myb protein , which is a candidate transcription factor . in as1 and as2 mutants , the polarity formation in leaves is defective . cell differentiation along abaxial - adaxial , proximal - distal and media - lateral axes all shows an insufficient fashion 通过扫描电镜、干涉相差显微镜、组织切片、过量表达等手段研究了as1和as2的功能，包括观察观察突变体的组织、细胞结构及早期发育状况，同时采用gus表达、 rt - pcr 、原位杂交、 northern等手段分析基因的表达情况。
