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根状茎

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Nov.. The main symptoms of the bacterial disease on Vigna angularis were canker of stalk.The strains were straight or curved rods; polar flagellum one; Gram-negative; could infect Vigna angularis、 Glycine max、 Vigna radata、 Vigna umbellate、 Phaseolus vulgaris、 Pisum sativum、 Pisum sativum var.humlie; oxidase negative; nitrate reduction negative; 5% glucose agar mucilage positive; esculin hydrolysis positive; starch negative; milk hydrolysis positive; H_2S positive; acid from L-arabinose, D-mannose, D-galactose, cellobiose, trehalose and fructose; 5%NaCl positive; G+Cmol%-69%.

红小豆溃疡病主要症状为茎部溃疡;各菌株菌体均杆状;极生鞭毛1根;革兰氏染色阴性;人工接种能侵染多种豆科植物;好氧;氧化酶阴性;硝酸盐反应阴性;5%葡萄糖营养琼脂黏液生长阳性;七叶灵水解阳性;淀粉水解阴性;牛奶分解产碱;产生硫化氢;能从阿拉伯糖等产酸;最大耐盐量为5%;G+Cmol%为69%等特征,根据《手册》9th ed相关部分,确定该病由野油菜黄单胞菌苜蓿致病变种Xanthomonas campestris pv.alfalfae(Riker,Jones et Davis 1935)Dye 19781引起。

Unarmed woody rhizomatous perennial plant distinguished from wild sarsaparilla by more aromatic roots and panicled umbels; southeastern North America to Mexico.

一种木质、有地下茎的多年生植物,与裸茎楤木不同,它有更多的芳香的根和圆锥状伞形花序;产自从北美东南部到墨西哥的地区。

For the BM-rice,the sclerenchyma of leaves was shrunken,vascular bundle of leaves was reduced,the strumae of outer epidermis of stem was sparse and the link of phloem of root was loosed and dispersed.

2通过扫描电镜观察,脆性突变水稻的组织结构发生了较大变化:叶片薄壁组织扩张,厚壁组织收缩,维管束数目减少;茎杆外表皮硅质瘤状结构分布稀疏;根中柱韧皮部组织排列稀疏,连接松散。

Stems cespitose or single, glabrescent.

根纤维状。茎丛生的或单身,后脱落。

Whitish hairy plant with featherlike leaves and a few stout stems each bearing an especially handsome solitary large yellow flower head; mountainous regions north central United States.

一种白色、多毛的植物,具有羽状叶、几根粗壮的茎和极其美丽的大而单生的黄色头状花序;生长在美国中北部的山区。

Any of various North American perennials of the genus Heuchera having palmately lobed basal leaves and leafless stalks bearing numerous small greenish, white, or reddish flowers.

矾根草,老鹳草一种北美的矾根属多年生植物,有掌状垂片基生叶和无叶茎,茎上有很多淡绿色、白色或浅红色的小花

Radical leaves: stipules ovate, herbaceous, adnate to petiole; petiole sheathing at base; leaf blade imparipinnate; leaflets opposite, rarely alternate, broadly elliptic or obovate-oblong; cauline leaves few, with few leaflets, or simple and then margin 3-lobed or 2- or 3-serrate.

胚根叶:托叶卵形,草本,贴生于叶柄;叶柄具鞘的在基部;叶片奇数羽状;小叶对生,很少互生,宽椭圆形或倒卵形长圆形;很少的茎生叶,有很少传单,3浅裂的或单的然后空白边2或3使成锯齿波。

The spongy, parenchymatous central tissue in some stems and roots.

某些茎和根中央的海绵状薄壁组织。

Roots fleshy. Leaves almost all basal; stem leaves alternate; petiole long; pinnatifid to pinnatisect.

根肉质。叶几乎所有基部;茎生叶互生;叶柄长;对羽状全裂羽状半裂。

Shrubs, usually aerial hemiparasites on other seed plants, often spreading along host by runners, more rarely terrestrial root-parasitic shrubs or trees, nodes not articulated, glabrous or hairy, hairs often stellate or verticillate. Leaves opposite or alternate, stipules absent; petiole often indistinct; leaf blade simple, usually pinnately veined, margin entire.

灌木,通常半寄生在其它种子植物的树上,通过匍匐茎在寄主身上延伸,很少为根寄生的地生灌木或乔木,节没有关节,无毛或有毛,通常为星状毛或具毛轮,对生叶或交替,托叶无;叶柄不明显;单叶,通常羽状脉,边缘全缘。

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