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  2009, Vol. 23 Issue (5): 495-502     DOI: 10.3969/j.issn.10017216.2009.05.08
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Cluster Analysis of Weedy Rice and Cultivated Rice Based on the Structural Characteristics of Leaf Lower Epidermis
YANG Lin, DAI Wei-min, QIANG Sheng, SONG Xiao-ling*
Weed Research Laboratory, Nanjing Agricultural University, Nanjing 210095, China; *Corresponding author, E-mail:
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Abstract 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.
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DAI Wei-min
SONG Xiao-ling*
Key wordsweedy rice   leaf lower epidermis   cluster analysis   stomatal density   papillae     
Received: 1900-01-01;
Cite this article:   
YANG Lin,DAI Wei-min,QIANG Sheng et al. Cluster Analysis of Weedy Rice and Cultivated Rice Based on the Structural Characteristics of Leaf Lower Epidermis[J]. , 2009, 23(5): 495-502 .
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