中国樟科5属9种植物的核型研究

STUDIES ON THE KARYOTYPE OF 9 SPECIES OF 5 GENERA OF LAURACEAE IN CHINA

摘要: 报道了我国樟科(Lauraceae)5属9种植物核型研究结果,其中7种染色体数目为首次报道。核型结果为:樟(Cinnamoumcamphora)20m＋4sm;油樟(Cinnamoumlongepaniculatum)20m十4sm;黑亮楠(Linderamegaphylla)18m(2SAT)＋6sm;山苍子(Linderacubeba)16m＋8sm;香叶树(Linderacommunis)22m＋2sm;川钓樟(Linderapulcherrima)20m＋2sm＋2st(SAT);红果黄肉楠(Actinodaphnecuplaris)22m+2sm;楠木(Phoebezhennana)18m＋6sm(4SAT);赛楠(Nothaphoebecavaleriei)24m。樟科属间核型差异显著,研究的5个属有1A、2A、1B、2B 4种类型,1B核型在植物中少见报道。

Abstract: The chromosome numbers and karyotypes of 9 species of 5 genera of ChineseLauraceae plants were reported. Seven species of these were first reported on their chromosome numbers. The results of karyotype analysis are:Cinnamoum camphora 20 m +4 sm;C. longepaniculatum 20 m + 4 sm;Lindera megaphylla 18 m (2SAT) + 6 sm;L.cubeba 16 m+8 sm;L. communis 22 m+2 sm; L. pulcherrima 20 m+ 2 sm+2 st(SAT);Actinodaphne cuplaris 22m +2 sm;Phoebe zhennana 18 m + 6 sm (4SAT); Nothaphoebe cavaleriei 24 m. There were distinct differences between genera of. Lauraceae plants in their karyotypes. Four types, lA, ZA, IB, ZB, were found in five genera. 1B karyotype is rarely reported in plant.