带有光亮叶柄的一种北美蕨类。
叶柄的，与叶柄有关的，或长在叶柄上的。
叶柄薄壁细胞存在晶体，叶柄的导管管径比较大，有大量的通气组织。
The crystals exist in parenchyma cells of its petioles. Its petioles have big vessels and much aerenchyma.
每个维管束的韧皮部外面有数层厚壁细胞，增加叶柄的机械支持作用。
There are some sclerenchymatous cells outside the phloem of each vascular bundle to increase the supporting force of the petiole.
结果表明：TDZ对赤霞珠离体叶片、叶柄不定芽再生有诱导作用，对叶片、叶柄的最高诱导率分别为18.06%和28.57%；
The result indicated that TDZ had effect on the adventitious buds induction of "Carbernet Sauvignon". Adventitious bud regenerating rate from leaf and petiole is 18.06% and 28.57%, respectively.
无柄的叶没有叶柄。
植株各部位非水溶性氮含量占全氮的比例，叶片在90%以上，高于茎和叶柄，随生育时期变动很小。
The NWSN /total nitrogen ratio was bigger than 90 % in trifoliolates, higher than that in stems and that in petioles, but they changed hardly with growing stages.
在测定的30份大田病株茎杆、叶柄、叶脉样品中，阳性样品率为100%。
The rate of positive samples was 100% by the ELISA among 30 stems, petioles and veins from naturally diseased cottons.
以安祖花的叶片、叶柄、带腋芽茎段为外植体进行组织培养，对其快速繁殖进行了研究。
To establish the technical system of rapid propagation, the young leaves, petioles, and stems with buds of Anthurium andraeanum were cultured.
采用正交设计方法，研究了NAA、6-BA、MS培养基对明党参叶片与叶柄愈伤组织诱导的影响。
Effects of NAA, 6-BA, MS culture medium on leaf and petiole callus induction of Changium smyrnioides Wolff were studied by orthogonal design.
结果与结论：随着高温胁迫时间的延长，半夏叶片和叶柄中MDA含量显著增加，而块茎中MDA含量增加却不显著。
Result and Conclusion: By stress time increasing, the content of MDA in lamina and petiole increased obviously, but it increased invisibly in tuber.
在茎和叶柄上，粘液毛发生于某些特化的小型表皮细胞上，花柄表皮上有无特化的细胞，尚未确定。
In stems and petioles, slime hairs were found on certain specialized smaller epidermal cells only, which are uncertain on pedicels.
赤霉酸（GA_3）处理菜豆叶柄和棉苗子叶柄外植体，离区的纤维素酶活力增加，而吲哚乙酸（IAA）则抑制离区纤维索酶的活力。
The paper studied effects of GA_3 and IAA on cellulase activity in abscission zone from petiole of primary leaves of bean, cotyledon petioles and boll petioles of cotton.
双子叶植物典型的营养叶由两个主要部分组成：叶片和叶柄。
A typical foliage leaf of a plant belonging to the dicotyledons is composed of two principal parts: blade and petiole.
古果属茎枝细弱、叶子细而深裂、叶柄基部多膨突等特征，反映了该属的水生草本特征。
The delicate stems, thin and highly dissected leaves and swollen bases of the leaf stalks imply Archaefructus as aquatic and herbaceous angiosperms in nature.
一年生长枝叶片的叶宽、叶长、叶面积、叶柄长、叶基角均随叶序的增加逐渐减小，叶形指数和有缺刻叶的比例则增加。
In long shoot, the leaf width, leaf length, leaf area, petiole length and basal Angle decreased, but the leaf index and the ratio of lobation increased as its arrangement increased.
由叶柄或叶基部生长出的变态的叶，为发育产生的外部结构。
Stipule A modified leaf found as an outgrowth from the petiole or leaf base.
据此，甜菜生育前期叶柄中的蔗糖合成酶活性可作为选育或鉴定高糖型品种的参考指标。
Thus, the sucrose synthase activities in sugarbeet stalks of early growth stage could be used as a reference index in selecting or identifying high sugar content varieties.
暴马丁香叶柄表皮外覆有一层发达的角质层，韧皮部外有较发达的韧皮纤维。
In the petiole of Suringa reticulata (Blume) Hara var. mandshurica (Maxim. ) Hara, there are thick cuticle on the epidermis, developed phloem fiber surround the phloem.
18世纪末期，芹菜经培育形成大而多汁的肉质直立叶柄。
The varieties with large, fleshy, succulent, upright leafstalks were developed in the late 18th century.
小叶柄胶值、侧脉及中脉乳管数量的遗传力较高。
Both the petiolule latex yield and the latex vessel number in lateral veins or midribs have a greater heritability.
黄色叶柄处具有窄小复叶的北美蕨类。
North American fern with narrow fronds on yellowish leafstalks.
加入外源硝态氮培养后叶片硝酸还原酶活性的增加程度与叶柄硝态氮含量相一致。
The percentage increase of blade NRA after cultivated by extra-source nitrate was positively related to the petiole nitrate-N concentration.
系统感染长叶车前花叶病毒的青菜叶片叶柄分别作冰冻切片，运用免疫酶标技术对叶片叶柄内的病毒进行显色定位。
Chinese cabbage leaf blade and leaf stalk of Brassica Chinensis systematically infected with Ribgrass Mosaic virus was separately made by the freezing cut transection.
与玉米间作的大豆，宜选育叶片大小中等、披针形或短椭圆形、叶柄短而粗、叶色深绿的品种。
The soybean variety under-sowing with maize ought to select that the leaf is middle size, lanceolate or elliptic, deep green colour, and the petiole is short and thick;
卷完所有叶子或者达到你想要的尺寸后，紧紧捏住叶柄，并用园艺胶布把它们绕起来。
When you have added all your leaves or reached the desired size, pinch the leaf stems tightly and begin to wrap with florist tape.
结果表明：两品种叶柄硝酸盐浓度与施氮量和产量均有显著的正相关关系。
The results showed: that the petiole nitrate concentration in two cotton genotypes was significantly positive correlated with rates of N applied and yields.
结果表明：两品种叶柄硝酸盐浓度与施氮量和产量均有显著的正相关关系。
The results showed: that the petiole nitrate concentration in two cotton genotypes was significantly positive correlated with rates of N applied and yields.
应用推荐