The Taxonomy and the SEM Observation on Tubercles on Lemma of Yihuang Wild Rice

作     者：HE Xiao-peng HE Hao-hua PENG Xiao-song FU Jun-ru LIU Yi-bai WU Qiang HUA Yu-jian XU Bo-gan WANG Xiang-kun 

作者机构：College of Agronomy Jiangxi Agricultural University/Key Laboratory of Crop Physiology Ecology and Genetic Breeding of Jiangxi Province Nanchang 330045 P.R.China Fuzhou Agricultural Research Institute Fuzhou 344000 P.R.China Forest Workstation of Zhongfan Town of Yihuang County in Jiangxi Province Yihuang 344400 P.R.China College of Agronomy and Biotechnology China Agricultural University Beijing 100094 P.R.China 

出 版 物：《Agricultural Sciences in China》 (中国农业科学（英文版）)

年 卷 期：2006年第5卷第7期

页      面：491-497页

学科分类：0710[理学-生物学] 09[农学] 0901[农学-作物学] 0902[农学-园艺学] 

基　　金：supported by the National Natural Science Foundation of China(30560073) the Key Technologies R&D Program of Jiangxi Province,China(200210100210) 

主　　题：Yihuang wild rice taxonomy tubercle characters on lemma wild rice Leersia L. sayanuka Ohwi 

摘      要：To distinguish the taxonomy of Yihuang wild rice found in Yihuang County, Jiangxi Province, China in 1999, the botanical characteristics of Yihuang wild rice were retrieved by genus, and species; at the same time, the tubercle characters on lemma in Yihuang wild rice, O. rufipogon, 0. officinalis, 0. meyeriana, and O. granulata, were also observed by scanning electron microscopy. The retrieval result by genus showed that Yihuang wild rice is Leersia Soland. Ex Swartz., not Oryza L., Hygroryza Nees and Chikusichloa Koidz. The retrieval result by species showed that Yihuang wild rice is L. sayanuka Ohwi, not L. hexandra Swartz., L. japonica （Makino） Honda and L. oryzoides （L.） Swartz. The results of the SEM observation on tubercles on lemma showed that the tubercle characters on lemma of Yihuang wild rice belongs to ＂inlaid- silica-peak＂ type, which is different from the three types of wild rice existing in China, O. rufipogon, O. officinalis, O. Meyeriana, and also O. granulata, but is similar to L. tisseranti, thereby gives a proof of the above retrieval results. It could be concluded that Yihuang wild rice does not belong to Oryza L., but to Leersia sayanuka Ohwi of Leersia Soland. Ex Swartz.