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《Scientia Silvae Sinicae》 2008-05
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Pollen Morphology and Cultivar Classification of the Genus Chaenomeles

Zheng Lin Chen Hong Zhang Lei Zang Dekui(Forestry College,Shandong Agricultural University Taian 271018)  
The pollen grains of 19 cultivars in Chaenomeles were observed under SEM(Scan Electronic Microscope).The results showed that they all belonged to N_3P_4C_3 type,and were of prolate or perprolate and of radial symmetric.The length between poles varied from 48.64 to 39.95 μm and diameter of the equator ranged 25.28~20.97 μm.The cover was embellished with streak or striate,with pores in the tectum.Pollen submicroscopic morphology is valuable traits in cultivar classification in this genus.A retrieval key was established for cultivar classification based on pollen morphology variation.The result of cluster analysis suggested that there was close relationship among C.speciosa,C.japonica and C.× superba,and there was alienation between C.sinensis and the other 4 species,which was consistent with traditional classification result.
【Fund】: 山东省中青年科学家奖励基金(2004BS06003);; 山东农业大学博士基金(23215)
【CateGory Index】: S661
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