摘要
利用光学显微镜对33份杂草稻及6份栽培稻材料的叶片下表皮中央长细胞及其各级乳突、气孔器及其乳突的结构特征进行了观察、统计后作主成分分析及聚类分析。主成分分析后得到3个在各个性状因子中贡献率最大的主成分,分别是中央长细胞大乳突、中乳突及小乳突的数目、大小,气孔密度。叶表皮结构特征在各供试材料之间有一定的变异和特异性,在杂草稻分类鉴定及亲缘关系的研究中具有一定的价值。
The characteristics of long cells, papillae with different sizes, stomata on leaf-back in 33 accessions of weedy rice （Oryza sativa f. spontanea） and 6 accessions of cultivated rice （Oryza sativa L. ） were observed with a light microscopy （LM）. The principal component analysis （PCA） and cluster analysis were conducted using the above data. Three principal components were obtained, in which the number and diameter of the large, medium and small papillae on the long cells, stomatal density contributed most variance. The morphological features of the leaf epidermis varied significantly among the accessions, The results may be valuable for the taxonomic identification and studies on origins of weedy rice.
出处
《中国水稻科学》
CAS
CSCD
北大核心
2009年第5期495-502,共8页
Chinese Journal of Rice Science
基金
国家973计划资助项目(2007CB109202)
关键词
杂草稻
叶下表皮
聚类分析
气孔密度
乳突
weedy rice
leaf lower epidermis
cluster analysis
stomatal density
papillae
