子叶

Keywords : monocotyledonous crop;dicotyledonous crop;EST-SSR;transferability of primer

中文关键词：单子叶作物；双子叶作物；EST-SSR；引物通用性

(1)29,28,26 of 30 pairs of EST-SSR primers from wheat respectively had amplification products in maize,oilseed rape and soybean,the rate of amplification was 96.7%,93.3%,86.7%,respectively;12 of 30 pairs EST-SSR primers from wheat showed polymorphism in monocotyledons wheat and maize,9 in dicotyledons oilseed rape and soybean,and 4 in both monocotyledonous and dicotyledonous crops.

基金项目：国家生命科学与技术人才培养基地科技创新基金项目(2007088)；国家油菜产业化项目科学家岗位"化杀岗位"（nycytx-00505）；国家自然科学基金项目(30871578)中文摘要：探讨单、双子叶作物间EST-SSR引物和标记的通用性。选取30对小麦、8对油菜和14对白菜的EST-SSR引物，分别以10个小麦、10个油菜、5个大豆品种和5个玉米自交系的基因组DNA为模板，进行PCR扩增及扩增产物的多态性分析。

Comprising seed plants that produce an embryo with paired cotyledons and net-veined leaves; divided into six subclasses: Magnoliidae and Hamamelidae; Caryophyllidae (an early and distinctive offshoot); and three more or less advanced groups: Dilleniidae; Rosidae; Asteridae.

由生长双子叶胚胎和网状叶脉叶子的种子植物组成；分为六个亚纲；木兰群和金缕梅亚纲等。

The research advance on organogenesis, somatic embryogenesis and protoplast regeneration system of soybean are introduced in this paper.

终于在20世纪80年代初期有了转机，人们选择了幼胚、幼胚子叶或胚轴为外植体，用异常高浓度的植物生长调节物质，建立了大豆的体细胞胚胎发生和器官发生再生系统。

The invention relates to a rapid breeding method which uses MS as the basic culture medium and respectively performs the tissue culture of a xuancheng pawpaw through inducing a sprout and a root.

一种用MS作基本培养基，分别通过芽和根诱导进行宣木瓜组织培养快速繁殖的方法，其特征在于采用宣木瓜种子子叶或种子胚进行组织培养。

Eustele The STELE arrangement found in most gymnosperms and dicotyledons in which the vascular tissue is arranged into a ring of discrete bundles separated by medullary rays, all contained within a single ring of endodermis and pericycle.

真中柱：发现于大多数裸子植物和双子叶植物的中柱类型，其维管组织由不连续的，被髓射线分开维管束排列成环状。所有的微观组织都包含在内皮层和中柱鞘以内。

Are preparatively cultured in the differentiation culture mediums(IBA 1 mg/L, BA0.4 mg/L) for two days, and AS is added in preparative culture medium and MSo bacterial liquid that has been centrifugated. The extents of colouration are not identical.

影响瞬时表达的因素很多，本实验主要对四个因素进行测试：预培养天数(1天、2天)、不同激素配比的分化培养(IBA 1.0mg/L BA 0.4mg/L、IBA 0.2mg/L BA 2mg/L)、是否加入乙酰丁香酮、外植体类型(子叶、真叶、下胚轴、根)。

When the embryonic original cell divided to form multicellur proembryos, the cell wall of the external cell was thickened to form a clear cell boundary to separate from ambient cells that was a phenomenon of isolation The protoderm began to be differentiated in the period of globular embryoid, and the procambium differentiated clearly in period of torpedo embryoid.

正常的球形胚和某些畸形球形胚继续发育，在心形胚或鱼雷胚阶段又出现出畸形胚，可以分为：①无茎端生长点；②原形成层发育不正常；③外形畸形，如有的是连胚，有的呈指状，有的呈叶片状等等。畸形胚有的败育，有的能继续发育，在子叶胚阶段形成畸形的植株。

Seeds 1 or 2, not comose; endosperm bony; cotyledons broadly ovate or subcordate, radicle superior.

种子1或2，不具丛毛；胚乳多骨；子叶宽卵形的或近心形，胚根上位。

If redroot pigweeds are the only weeds the minimum dosage of herbicide can be used based on the recommendation.

在不同高度的麦茬环境中，苗后防除双子叶杂草，应使用大雾滴喷头。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。