[1]何俊平,朱家成,王建平,等.甘蓝型油菜幼苗显微组织结构与抗寒性的关系[J].江苏农业学报,2017,(01):19-26.[doi:10.3969/j.issn.1000-4440.2017.01.004 ]
 HE Jun-ping,ZHU Jia-cheng,WANG Jian-ping,et al.The relationship between seedling microtructure and cold resistance of Brassica napus[J].,2017,(01):19-26.[doi:10.3969/j.issn.1000-4440.2017.01.004 ]
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甘蓝型油菜幼苗显微组织结构与抗寒性的关系()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2017年01期
页码:
19-26
栏目:
遗传育种·生理生化
出版日期:
2017-02-28

文章信息/Info

Title:
The relationship between seedling microtructure and cold resistance of Brassica napus
作者:
何俊平朱家成王建平文雁成曹金华蔡东芳赵磊王东国张书芬
(河南省农业科学院经济作物研究所,农业部黄淮海油料作物重点实验室,河南省油料作物遗传改良重点实验室,河南郑州450002)
Author(s):
HE Jun-pingZHU Jia-chengWANG Jian-pingWEN Yan-chengCAO Jin-huaCAI Dong-fangZHAO LeiWANG Dong-guoZHANG Shu-fen
(Institute of Industrial Crops, Henan Academy of Agricultural Sciences, Key Laboratory of Oil Crops in Huanghuaihai Plains, Ministry of Agriculture, Henan Provincial Key Laboratory for Oil Crops Improvement, Zhengzhou 450002,China)
关键词:
甘蓝型油菜抗寒性显微结构叶片
Keywords:
Brassica napus L.cold resistancemicrostructureleafstem
分类号:
S565.401
DOI:
10.3969/j.issn.1000-4440.2017.01.004
文献标志码:
A
摘要:
为研究甘蓝型油菜显微组织结构与其抗寒性的关系,采用石蜡切片法对不同温度和低温胁迫不同时段下的2份抗寒型及2份寒敏感型甘蓝型油菜材料幼苗叶片与茎进行制片,再利用光学显微镜观察叶片与茎的显微组织结构并拍照,进而比较分析各同类组织结构间的异同。结果表明,不同温度和低温胁迫不同时段下,各材料幼茎解剖结构间无明显差异;常温下,抗寒材料叶片叶肉及主脉显微结构各组织间的辨识度与界限清晰度优于寒敏感材料,抗寒材料主脉显微结构中维管束鞘外围薄壁细胞的细胞壁厚度小于寒敏感材料;-2 ℃胁迫下,寒敏感材料叶片叶肉各组织的排列较抗寒型材料更为杂乱无章,随着胁迫时间的延长,抗寒材料叶肉细胞间隙较寒敏感材料有显著增多增大趋势。可见,叶片是油菜感知低温逆境胁迫及传导胁迫信号的主要器官;叶片叶肉与主脉显微结构中各组织间的辨识度、界限清晰度以及主脉维管束鞘外围薄壁细胞的细胞壁厚度可作为评判油菜抗寒性强弱的参考指标。
Abstract:
In this study, the relationship between microstructure and cold resistance of rapeseed (Brassica napus) was elucidated. The seedlings of two cold-resistant materials and two cold-sensitive materials of Brassica napus were taken as the experimental materials. And then the paraffin sectioning method was taken to make sectioning paraffin blocks of leaves and stems. The microstructure of leaves and stems was observed and photographed by optical microscope. Finally, the differences and similarities of microstructure of each same organ were compared and analyzed. The results showed there was no significant difference among stem microstructure of each material at different temperature and different periods of low temperature. At room temperature, the identification and boundary clarity of each tissue of the leaf and main vein microstructure in cold-sensitive materials were better than those in cold-sensitive materials, but the cell wall thickness of parenchyma cell around vascular bundle sheath of the main vein microstructure in cold-resistant materials was thinner than that in cold-sensitive materials. Under -2 ℃ stress, the arrangement directions of each tissue of leaves anatomical structure in cold-sensitive materials were messier than that in cold-resistant materials. While the treating time was prolonged, compared with cold-sensitive materials, the number and size of intercellular space of leaves in cold-resistant materials increased significantly. In conclusion, the leaves were the key organ owning perception and signal transduction of low temperature stress. The identification and boundary clarity of each tissue of the leaf and main vein microstructure, and the cell wall thickness of parenchyma cell around vascular bundle sheath of the main vein microstructure can be used as reference-criteria to evaluate the cold resistance of rapeseed.

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备注/Memo

备注/Memo:
收稿日期:2016-04-07 基金项目:国家现代农业产业技术体系建设专项基金项目(CARS-13);河南省重大科技专项(151100111200);国家自然科学基金面上项目(31271763) 作者简介:何俊平(1979-),女,河南扶沟人,博士,副研究员,主要从事油菜遗传育种研究。(Tel)15639786687;(E-mail)peace0120@163.com 通讯作者:张书芬,(Tel)13838551969;(E-mail)shufenzhang2010@163.com
更新日期/Last Update: 2017-04-12