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PANG Ji Liang WANG Li Lin HU Jiang Qin LIANG Hai Man LI Wen An (School of Life Sciences , Hangzhou Normal College, Hangzhou 310036; Schoolc of Life Sciences , Zhejiang University, Hangzhou 310012; Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032)  
Six types of floral homeotic variants of in vitro seedlings were observed in doubleflower sin-ningia. Type Ⅰ , red and green mosaic petals exist in the outermost whorl of petal-whorls, 2. 38 % Type Ⅱ , the outermost whorl of petal-whorls exhibit green petals with thin yellow edge, 25. 0 %. Type Ⅲ , green petals exist in the innermost side of normal red petal whorls, 1. 78 % . Type Ⅳ , multiple whorls of green petals exist in the inner side of normal sepals, no stamen and carpel, 1. 67 % . Type Ⅴ , it exhibits duplicated whorls of sepals in the outermost, 7.14 % . Type Ⅵ , it exists multiple whorls of green sepals, no petal, stamen and carpel, 0. 12 % . The total percentage of all types of floral homeotic variants is up to 38. 1 % . The distribution of nodal site of homeotic flowers were analyzed, and the results showed that the homeolic flower occurred mainly at the fourth and fifth nodes.
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