meristem的例句大全

In order to improve the present germplasm or create new germplasm, the prior researchers usually use the means of biotechnology, such as meristem culture, protoplast culture, somatic hybridization, gene transformation and somaclonal variation.

研究者大多通过西瓜茎尖培养、原生质体培养、体细胞杂交、基因转化和诱导体细胞无性系变异等生物技术途径来改良西瓜现有的品种或创造新种质。

The meristem of type B differentiated later and had more meristem tissue than type A. We have observed mature somatic embryogenesis in the materials incubated on the medium II. The white calli changed to green.

在培养基Ⅱ中，观察到了成熟的体细胞胚，40d后白色的胚性愈伤组织转绿。

In cells of the primary meristem and the front part of elongation zone, water stress could lead to acute increase of the gold particle density, and also in the cells of the elongation and root hair zone.

水分胁迫可导致初生分生组织或伸长区前部细胞金颗粒标记密度大增，伸长区中部及根毛区细胞的金颗粒密度也明显增加。

still, the rate of hi-ii is the highest, which further confirms the superiority of the hybrids in maize tissue culture. third, during the construction of apical meristem regeneration transformation system, callus biopsy results in various stages are observed and analyzed in detail.

在建立茎尖分生组织再生转化体系的过程中，详细地观察分析了各个阶段愈伤组织的切片结果。

quiescent center a group of cells in the center of the apical meristem in which mitotic divisions are rate or absent.

在根的顶端分生组织中心区域的一些细胞，它们几乎不进行有丝分裂。

new necrotic laticifers with cambium - like meristem continue to form in the inner bark and this makes the disease become irreversible

新的坏死乳管和形成层状分生组织继续在树皮内层形成，因而使该病成为不可恢复的。

tissue culture and rapid propagation technique of zoysia sinica hance meristem

中华结缕草茎尖的组织培养和快繁技术研究

vicia sativa root nodule is usually rod-shaped, it is mainly composed of many cortex cells and a very large central zone which contains meristem, infected tissue and senescent tissue.

箭舌豌豆根瘤为杆形，主要由皮层细胞和一个体积很大，含有分生组织、侵染组织，有时还有衰老组织的中心区域所组成。

pla1 is expressed in developing leaf primordia, bracts of the panicle, and elongating internodes, but not in the shoot apical meristem.

PLA1在发育中的叶原基、花序苞叶和伸长的节间表达，但在地上部顶端分生组织不表达。

effect of meristem tip virus-free in the welsh onion

热处理对大葱茎尖脱毒效果的影响

The outer layer of apical meristem, from which the epidermis is formed.

表皮''.'原'.''顶端''.'分'.''生组织的外层, 表皮就是从这里形成的.

Apical initials are the initial cells in the root or shoot apical meristem.

顶端原始细胞是跟或茎尖分生组织中的原始细胞.

Floral meristem undertake cell divisions actively and differentiate into sepals, petals, stamens and carpels gradually.

花的分生组织进行活跃的细胞分裂,并逐步分化形成萼片 、 瓣 、 蕊和雌蕊4个器官.

Cells of the procambium and ground meristem are more vacuolated than those of the protoderm.

原形成层和基本分生组织的细胞比原表皮层细胞更加液泡化.

Protophloem The first-formed PRIMARY PHLOEM, differentiated from the procambium in the region just behind the meristem.

原生韧皮部:最早形成的初生韧皮部,由位于分生组织中的原形成层分化而来.

Flowers are differentiated flom a few cells on the stem apical meristem of a plant.

花由茎顶分生组织的少数细胞分化而来.

The flower meristem identity genes can activate the homeotic genes to some extent.

花分生组织决定基因促进花序分生组织产生花分生组织并进一步分化产生花器官原基,但产生何种花器官则是由同源异型基因所控制的.

Research on Stem-apex Meristem Culture and Rapid Reproduction Technology of Sweet Potato.

脱毒马铃薯苗的快速繁殖技术.

The epidermis arises from the tunica meristem.

表皮来源于分生组织近外方的细胞.

Virus-free materials of Ophiopogon japonicus were obtained from meristem culture in vitro.

采用茎尖分生组织培养技术,获得了川麦冬的脱病毒试管苗.