干旱区生态环境知识资源中心(Arid): 无芒隐子草叶片解剖结构对荒漠草原不同退化梯度的响应

Arid

	无芒隐子草叶片解剖结构对荒漠草原不同退化梯度的响应
其他题名	The Response of Cleistogenes songorica Leaf Anatomical Structure to Desert Grassland Deterioration Gradient
	张文霞 1; 王春光 2; 殷晓飞 3; 王海超 2
来源期刊	生态环境学报
ISSN	1674-5906
出版年	2018
卷号	27 期号:10 页码:1809-1817
中文摘要	以荒漠草原优势种无芒隐子草(Cleistogenes songorica)叶片解剖结构为研究对象,根据荒漠草原退化程度,在内蒙古鄂尔多斯鄂托克旗境内选择轻度退化区(LD)、中度退化区(MD)、重度退化区(HD)和对照(CK)4种试验区,对不同试验区无芒隐子草叶片解剖结构中的上表皮和下表皮细胞厚度、上角质层和下角质层厚度、中脉厚度、叶片厚度、叶片宽度、泡状细胞厚度、机械组织厚度、维管束直径、维管束鞘细胞厚度、花环细胞厚度等12个指标进行观测,应用方差分析和对应分析法,研究无芒隐子草对干旱生境的适应性,探讨其解剖结构参数与由干旱胁迫引起的荒漠草原退化梯度之间的相关性.结果表明,随着荒漠草原退化程度的加剧,叶片宽度(1 083.54~1 067.08 mum)呈显著减少趋势(P<0.05),上表皮细胞厚度(5.43~6.69 mum)、下表皮细胞厚度(6.04~7.32 mum)、上角质层厚度(2.17~2.74 mum)、下角质层厚度(1.79~2.42 mum)、中脉厚度(114.52~165.36 mum)、叶片厚度(87.90~106.44 mum)、泡状细胞厚度(35.43~46.03 mum)、机械组织厚度(21.60~39.39 mum)、维管束直径(44.61~58.52 mum)呈显著增加趋势(P<0.05),维管束鞘细胞厚度、花环细胞厚度在草原退化4种不同梯度中无显著差异.与草原退化相关性显著的解剖性状主要是叶片宽度、叶片厚度、中脉厚度、上表皮和下表皮细胞厚度、上角质层和下角质层厚度、泡状细胞厚度、机械组织厚度和维管束直径.在由干旱胁迫引起的荒漠草原不同退化程度下,无芒隐子草叶片形成了与生境相适应的解剖结构,部分结构指标与草原退化呈相关性显著.研究结果可为无芒隐子草的保护利用和荒漠草原退化程度的监测提供理论依据.
英文摘要	This paper studied the leaf anatomical structure of Cleistogenes Songorica, a dominant plant in desert grassland, to explore its ecological adaptability to dry environment and the correlation between the parameters of its anatomical structure and the degradation gradient caused by drought. Cleistogenes songorica samples were taken from the desert grassland in Otog Banner, Inner Mongolia, China to set up four research groups: the comparison (CK), light degraded (LD), moderately degraded (MD) and heavily degraded (HD). Cleistogenes songorica leaf’s anatomical structure of each degradation degree was observed and compared with variance analysis and correspondence analysis. 12 indicators were involved in the research, which were thickness of upper epidermis, thickness of lower epidermis, cuticle thickness of upper epidermis, cuticle thickness of lower epidermis, thickness of leaf, thickness of main vein, thickness of bulliform cell, thickness of mechanical tissue, thickness of vascular bundle, width of leaf, thickness of vascular bundle sheath cells and thickness of Kranz mesophyll cells. The results showed that with the degradation of the grassland, the width of the leaf (1 083.54~1 067.08 mum) had a tendency of remarkable decrease (P<0.05), while the thickness of upper epidermis (5.43~6.69 mum), thickness of lower epidermis (6.04~7.32 mum), cuticle thickness of upper epidermis(2.17~2.74 mum), cuticle thickness of lower epidermis(1.79~2.42 mum), thickness of main vein (114.52~165.36 mum), thickness of leaf (87.90~106.44 mum), thickness of bulliform cell (35.43~46.03 mum), thickness of mechanical tissue (21.60~39.39 mum), thickness of vascular bundle (44.61~58.52 mum) had a tendency of sharp increase(P<0.05), but the thickness of vascular bundle sheath cells and thickness of Kranz mesophyll cells had no remarkable difference. 10 indicators studied had remarkable difference with the degradation of the grassland, which were width of leaf, thickness of leaf, thickness of main vein, thickness of upper epidermis, thickness of lower epidermis, cuticle thickness of upper epidermis, cuticle thickness of lower epidermis, thickness of bulliform cell, thickness of mechanical tissue and thickness of vascular bundle. The research showed the leaf of Cleistogenes songorica takes an anatomical structure adapting to the habitat of the desert steppe caused by drought stress and most structure indicators have significant correlation with the degradation of the grassland. The results provide theory basis to protect and utilize Cleistogenes songorica and to detect the degradation of the grassland.
中文关键词	无芒隐子草 ; 荒漠草原 ; 叶片 ; 退化梯度 ; 解剖结构
英文关键词	Cleistogenes songorica desert grassland deterioration gradient leaf anatomical structure
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6353547
来源机构	内蒙古农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/238085
作者单位	1.内蒙古农业大学机电工程学院;;鄂尔多斯应用技术学院电子信息工程系, ;;, 呼和浩特;;鄂尔多斯, 内蒙古;;内蒙古 010018;;017000, 中国; 2.内蒙古农业大学机电工程学院, 呼和浩特, 内蒙古 010018, 中国; 3.呼和浩特职业学院机电工程学院, 呼和浩特, 内蒙古 010018, 中国
推荐引用方式 GB/T 7714	张文霞,王春光,殷晓飞,等. 无芒隐子草叶片解剖结构对荒漠草原不同退化梯度的响应[J]. 内蒙古农业大学,2018,27(10):1809-1817.
APA	张文霞,王春光,殷晓飞,&王海超.(2018).无芒隐子草叶片解剖结构对荒漠草原不同退化梯度的响应.生态环境学报,27(10),1809-1817.
MLA	张文霞,et al."无芒隐子草叶片解剖结构对荒漠草原不同退化梯度的响应".生态环境学报 27.10(2018):1809-1817.