[1]张静珍,阎秀丽,王世幸,等.地被菊开花过程中花瓣表面形态和细胞学变化[J].黑龙江农业科学,2018,(02):11-16.[doi:10.11942/j.issn1002-2767.2018.02.0011]
　ZHANG Jing-zhen,YAN Xiu-li,WANG Shi-xing,et al.Morphological and Cellular Changes of Ground-cover Chrysanthemum Under Different Flowering Stages[J].HEILONGJIANG AGRICULTURAL SCIENCES,2018,(02):11-16.[doi:10.11942/j.issn1002-2767.2018.02.0011]
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地被菊开花过程中花瓣表面形态和细胞学变化

《黑龙江农业科学》[ISSN:1002-2767/CN:23-1204/S] 卷: 期数: 2018年02期 页码: 11-16 栏目: 出版日期: 2018-02-10
Title:
Morphological and Cellular Changes of Ground-cover Chrysanthemum Under Different Flowering Stages
作者:
张静珍; 阎秀丽; 王世幸; 王奎玲; 刘庆华; 姜新强
青岛农业大学 园林与林学院，山东 青岛 266109
Author(s):
ZHANG Jing-zhen; YAN Xiu-li; WANG Shi-xing; WANG Kui-ling; LIU Qing-hua; JIANG Xin-qiang
College of Landscape Architecture and Forestry,Qingdao Agricultural University,Qingdao 266109，China
关键词:
地被菊; 花瓣表皮细胞; 细胞扩展
Keywords:
ground-cover Chrysanthemum;  flower epidermal cell;  cell expansion
DOI:
10.11942/j.issn1002-2767.2018.02.0011
文献标志码:
A
摘要:
为促进地被菊花型育种，以地被菊白鹭不同开花过程中的花瓣为试材，采用扫描电子显微镜和常规石蜡切片的方法，通过测定不同开花阶段花瓣的花序直径、舌状花面积、鲜重和干重以及细胞类型，比较地被菊不同开花阶段花瓣表面形态和细胞扩展的动态变化。结果表明：随着开花过程的进行，地被菊白鹭花序直径、舌状花面积、鲜重和干重均呈现逐渐增大的趋势，地被菊开花过程的完成是伴随着舌状花逐渐增大的结果；舌状花近轴面和远轴面扫描电子显微结果显示，不同开花阶段近轴面和远轴面舌状花细胞排列较为一致，同一阶段细胞类型各不相同；随着开花过程的进行，近轴面菱形细胞和长方形细胞呈现先增加后降低的趋势，远轴面条形细胞呈现逐渐增加的趋势，近轴面和远轴面细胞扩展速率均呈现先上升后降低的趋势，S3的细胞扩展速率显著高于其它开花阶段；地被菊舌状花细胞均由上表皮细胞、中层z组织和下表皮细胞组成，S1、S2时细胞形状规则，排列整齐，S3、S4时细胞呈现横向生长，不同细胞间隙疏松。
Abstract:
In order to promote the use of ground-cover Chrysanthemum type breeding，the ray flores of ground-cover Chrysanthemum Bailu under different flowering stages were used as materials.Scanning electronic microscopy and conventional paraffin section methods were used to explore the petal microstructure differences of Chrysanthemum Bailu.Comparative analysis under different flowering stages was conducted using different flower characteristics indexes,including inflorescence diameter,flower area,fresh weight,dry weight and types of cellular changes.These results illustrate the morphological and cellular dynamic changes of ligulate floret,and plays synergistic roles for Chrysanthemum flower breeding.The results showed that as the flower opening,the flower indexes including inflorescence diameter,flower area,fresh weight and dry weight of ray flores increases.The ligulate floret gradually increases resulted in the full flower opening in ground-cover Chrysanthemum.The adaxial and abaxial epidermal of ligulate floret under different flowering stages were measured.The cellular arrangement was almost the same under different flowering stages,while different cell types were found in the same flowering stage.As the flower opening,the rhombus and rectangle cell increased initially and then decreased in the adaxial epidermal,whereas the elongate cell constantly increased in the abaxial epidermal.The cell elongation rate of adaxial and abaxial display the same trend.The cell elongation rate of S3 was significantly higher compared with other flowering stages.The structure of ground-cover Chrysanthemum comprises of upper epidermal cell,middle layers and lower epidermal cell.The cell shapes in S1 and S2 arranges trimly,while loosely in S3 and S4.

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备注/Memo

收稿日期：2017-12-31基金项目：国家级大学生创新创业训练计划资助项目（201710435019）。第一作者简介：张静珍（1998-），女，浙江省丽水市人，在读学士，从事园林植物种质资源与遗传改良研究。E-mail：2424307686@qq.com。通讯作者：姜新强（1983-），男，山东省运城市人，博士，讲师，从事园林植物种质资源与遗传改良研究。E-mail：jiangxinqiang8@163.com。

更新日期/Last Update: 2018-04-08