叶斑

In the first chapter, using fragments of COI gene, we studied the phylogenetic relationships among species of five familes of Acridoidea with MP and Bayesian methods. The results were as follows:(1) Species of Acrididae, Gomphoceridae and all the Arcypterinae species of Arcypteridae are monophyletic. Species of Oedipodidae are supported as a monophyleticgroup, Ceracrinae species of Arcypteridae cluter together to make a monophyletic group. Epistaurus aberrans and Xenocatantops humilis is a phylogenetic group, Stenocatantops splendens and Hieroglyphus banian is also a phylogenetic group.

我们首先利用COI基因序列片段，使用最大简约法、贝叶斯法研究了斑腿蝗科、剑角蝗科、斑翅蝗科、网翅蝗科和槌角蝗科5个科42种的系统发育关系，得到如下结果：（1）由所有网翅蝗亚科的物种与剑角蝗科绿洲蝗亚科和槌角蝗科的物种组成一个单系群；斑翅蝗科的物种组成一个单系群；网翅蝗科的竹蝗亚科的黄脊雷蓖蝗和青脊竹蝗聚在一起形成单系群；斑腿蝗科的长翅十字蝗和大斑外斑腿蝗亲缘关系较近，形成一个单系群；长角直斑腿蝗和等歧蔗蝗始终聚在一起，形成一个单系群。

Reported diseases include crown gall, bacterial wilt, little-leaf, seedling blight, angular leaf spot, leaf spot, brown spot, leaf rust, grey mold, shoot blight, stem canker, and butt rot. Several non-infectious diseases including the leaf red spot, gummosis, herbicide in jury, typhoon damage and genetic albinism and an unidentified leaf crinkle disease are also described.

报告之桉树病害包括癌肿病、青枯病及小叶病等细菌注病害；苗腐病、角斑病、叶斑病、玫瑰桉叶斑病、叶锈病、灰霉病、褐斑病、枝枯病、溃疡病及冠腐病等真菌性病害；此外非病原性病害包括红斑病、流胶病、除草剂药害、风害及遗传性白化症等，以及病因不明之尾叶桉皱叶病亦在文内叙述之。

Phytophthora capsici is an important fungal pathogen that causes seed rot, seedling damping-off, root and crown rot, leaf spots, stem lesions, foliar blight, and fruit rot in many solanaceous crops and cucurbits (cantaloupe, cucumber, summer squash, pumpkin, watermelon). Rottingof seedlings prior to emergence (preemergence damping-off) and blighting of recently emerged seedlings (postemergence damping-off) can occur.

茄科疫病菌为一重要病原真菌，其在许多茄科作物与葫芦科作物(如哈密瓜、胡瓜、栉瓜、南瓜、西瓜)中会引起种腐病及种苗的猝倒、根腐及冠腐、叶斑、茎部病灶、叶枯和果腐病，而幼苗前猝倒病与后猝倒病亦皆会发生。

The Leaf spot is one of important diseases in golf courses. It causes leaf spot and leaf blight on many species of grasses, and can influence sights and destroy quality of grasses.

叶斑病是发生在高尔夫球场草坪上的一种重要病害，主要引起多种草坪草的叶斑和叶枯，严重影响草坪景观，破坏草坪质量。

Variegation on plant leaves is a specific constitution consisting of two and more type of different genetic cells.

植物叶斑是由两种或者两种以上基因型细胞组成的特殊组织结构，在植物发育研究和提高植物观赏性方面具有十分重要的意义。

One thing about variegated maples is that sometimes, some leaves may grow like a standard green-leaf maple without any variegation.

斑叶的枫树，有时候叶子会长成完全没有斑纹的标准绿叶，由於人们不想等待一年看看是否相同的枝干会再长出斑叶，就会将它给剪除了。

Besides, leaf variegation ratio was observed higher under shading.

本试验六品种变叶木在遮光环境下，叶面积、比叶面积会增加，比叶重会下降，叶片栅状组织及叶片厚度会变薄，气孔数减少；此外在遮光下，叶片的叶斑比例较高。

In this paper, the constitution of the variegation and the distribution of different protoplasts in muted fresh tissues of GWG variegated plant of Pelargonium zonal 'Ms.

Pollock'银边绿心型新鲜叶组织为材料，研究斑块结构切片及不同质体细胞的分布，以探索叶斑异化变型机制。

This plant is original Cercospora sp.

该植物是叶斑病原Cercospora sp。

Lesion numbers on the inducer-treated plants treat with BTH, JZG and TS were significantly less than on control plants, in the meantime, treatment with BTH, JZG and TS led to an increase in activities of chitinase and β-1,3-glucanase in tobacco leaf tissue. Indicated these inducers triggered SAR in tobacco plants; in the same, BTH, JZG and TS were sprayed on the 1st leaf on melon plant before challenge inoculation with Erysiphe cidhoracerum.

发酵液、3—氨基丁酸(3-amin-butyric acid，3—ABA)和茉莉酸(Jasmonic acid，JA)等9种供试诱导剂在珊西烟上进行筛选：用各种诱导剂分别处理珊西烟从下数第6片真叶，上部第7、8、9叶挑战接种TMV，调查比较发病后枯斑数，筛选结果表明，只有经BTH、JZG和TS三种诱导剂处理的珊西烟叶片上的TMV枯斑数较对照显著减少，并能诱导珊西烟叶片中几丁质酶和β-1，3-葡聚糖酶活性增强。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失