查询词典 leaf-shaped

The leaf primordium divides tangentially, then divides in various directions, and forms a young leaf.

叶原基首先进行切向分裂，然后进行各个方向的分裂形成幼叶。

Leaf buttress A leaf primordium, appearing as a protuberance on the side of the stem apex, produced by periclinal division of the tunica and corpus, and associated with a procambium.

叶原座：顶端分生组织上的侧生突起发育成叶的原基，与原形成层有关。

The spore germination and gametophyte development of 21 ferns are studied. It indicates that :① the development period of prothallium and young sporophyte of the same species is different due to seeding time of spores;② the optimal temperatures of spores germination and gametophyte development of 21 ferns are about 15 -24 ℃;③ the rate of spore germination of rare ferns is much lower than the ferns which occur large populations in nature;④ the treatment with GA 3 can accelerate the germination of the spores;⑤ the prothallium changes from large to small, green to yellow when young sporophyte comes out. The prothalliums of all 21 ferns die away after the appear of the 3rd leaf of sporophytes;⑥ shapes of the 1st and 2nd leaves of the young sporophyte are different from those emerged later;⑦ spores cultured in dark can not germinate;⑧ a prothallium can develop only one young sporophyte though it has many archegoniums, and the spore propagation with leaf mould substrate is an economical method.

摘 要：以腐叶土为培养基质，对 21 种蕨类植物进行了孢子萌发和原叶体发育的研究，结果表明：①不同时期播种的同种蕨类的孢子，发育出原叶体和幼孢子体所历经的时间长短不同；②孢子萌发和配子体生长发育的适宜温度约为 15 ～ 24 ℃；③稀有蕨类的孢子萌发率低，而在野外能形成较大种群的蕨类的孢子萌发率高；④用 GA 3 处理孢子可以促进萌发；⑤当原叶体上长出幼孢子体时，原叶体由大变小，由绿变黄， 21 种蕨类的原叶体都在幼孢子体上长出第 3 片叶时消失；⑥幼孢子体上长出的第 1 、 2 片叶在形态上与以后长出的叶不同；⑦孢子萌发需要光；⑧ 1 片原叶体尽管有多个颈卵器，但仅发育出 1 株幼孢子体；⑨利用腐叶土进行蕨类孢子繁殖是一种经济实用的繁殖方法。

According to pubescence on the abaxial surface of the leaf and on the petiole, and leaf marginal shape, 18 (4%) of the 450 sampled individuals were assigned to intermediate types between the two species.

根据叶片背面和叶柄的被毛情况及叶缘形状3个定性性状，在总共450个个体中，共得到18个(4%)中间过渡类型个体。

Significant selection effects of leaf blade pubescence status on resistance to bean pyralid were found in R1-R6 stages. It indicated that the pubescence status on leaf blade can be used as an indirect indicator for the resistance to bean pyralid in marker-assisted selection breeding.

在大豆生长的R1-R6期，两群体中叶片茸毛着生状态都有明显的选择效应，因而大豆叶片茸毛着生状态可作为豆卷叶螟抗性的指示性状，用于抗豆卷叶螟的标记辅助选择育种。

There existed significant difference of pubescence angle on leaf blade in breeding lines of TA and NTA populations, and very significant correlation was found between pubescence angle on leaf blade and resistance to bean pyralid.

方差分析表明TA和NTA群体家系间叶片茸毛着生角度也存在极显著的差异。

The explant are rhizome and leaf of Pyrola calliantha It has the best result by using 0.1% HgCl_2 for 7min for the explant of rhizome, for 5min for the explant of leaf.

对外植体的消毒方法已经掌握，用0.1%的升汞对鹿蹄草茎段的灭菌采用7min最佳，用0.1%的升汞对鹿蹄草叶片的灭菌采用5min最佳。

The knitting went pretty smoothly for this one, except on the third day. I was watching CSI, and somehow added one stitch to the right of the leaf lace panel. All the increases are supposed to be along the raglan sleeve lines where stitch markers were placed. There are also two stitch markers for the leaf lace panel to mark the beginning and the end. I was really into what was on TV and didn't look to see which stitch marker I was at, I did a M1 before the lace panel marker...

编织过程其实很顺利，只有在第三天时因为太专心看CSI，在叶子蕾丝右侧记号圈前加了一针，它是应该延著拉克兰袖线记号圈处加针，蕾丝两侧也放记号圈，但只是用来标示蕾丝，啊我顾看电视碰到记号圈也没看清楚就给它加针。。。

The research aimed to study the application of self-made leaf chamber groups on measuring the photosynthetic characteristics of Ranunculus ternatus Thunb., to solve the problem of Ranunculus ternatus Thunb. not to be measured during the measurement of photosynthetic characteristics because it leaf was small, grew attaching land, and to provide convenient for microphyll plants during the measurement of photosynthetic characteristics.

［目的］研究自制群体叶室在猫爪草光合特性测定中的应用，以解决在猫爪草光合特性测量中，猫爪草叶片小、贴地生长不易测量的困难，为小叶植物的光合测量提供方便。

Result The results showed that it has the characteristics of good sealing, easy connecting, simple and practical use and rapid time-saving, and the effects are good to measure photosynthetic characteristics of Ranunculus ternatus Thunb. using open measurement pattern. It solved problems that the original leaf chamber groups had large room so the petiole was broke easily when the leaves were clamped and the leaves growing attaching land are measured difficultyly after leaf chamber groups and photosynthesis instrument was assembled.

结果］结果表明，这种叶室密封性好，接驳容易，简单实用，操作方便，快速省时，采用开路测量模式测量猫爪草光合特性效果良好，解决了原配叶室存在叶室较大，夹住叶片时极易折断叶柄及叶室和光合仪组装完成后难以对贴地生长叶片进行测量等问题。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。