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国产十四种苋属植物的染色体数目
引用本文:宋葆华,张学杰,李法曾,万鹏.国产十四种苋属植物的染色体数目[J].中国科学院研究生院学报,2002,40(5):428-432.
作者姓名:宋葆华  张学杰  李法曾  万鹏
摘    要:报道了国产14种苋属植物的染色体数目。部分种的染色体数目为2n=34,即反枝苋Amaranthus   retroflexus,刺苋A.spinosus,红苋A.cruentus,腋花苋A.roxburghianus,合被苋A.polygonoides,皱果苋A.   viridis,凹头苋A.lividus,苋A.tricolor。其他种的染色体数目为2n=32,即尾穗苋A.caudatus,绿穗苋A.   hybridus,千穗谷A.hypochendriacus,繁穗苋A.paniculatus,北美苋A.blitoides,白苋A.albus。其中腋花   苋的染色体数目为首次报道。该属染色体基数为x=16,17。两种染色体基数在苋属2个组(sect.Ama-   ranthus和sect.Blitopsis)中均存在。由于苋属植物染色体大多为小型染色体,因此对苋属植物目前尚不  能进行详尽的核型分析。

关 键 词:苋属  染色体数目  染色体基数

Chromosome numbers of 14 species in Amaranthus from China
SONG Bao-Hua,ZHANG Xue-Jie,LI Fa-Zeng,WAN Peng.Chromosome numbers of 14 species in Amaranthus from China[J].Journal of the Graduate School of the Chinese Academy of Sciences,2002,40(5):428-432.
Authors:SONG Bao-Hua  ZHANG Xue-Jie  LI Fa-Zeng  WAN Peng
Abstract:In this paper, chromosome numbers of 14 species of the genus Amaranthus from China are reported: A. retroflexus 2n=34, A. caudatus 2n=32, A. hybridus 2n=32, A. spinosus 2n =34, A. cruentus 2n=34, A. hypochendriacus 2n=32, A. paniculdatus 2n=32, A. roxburghianus 2n=34, A. blitoides 2n=32, A. polygonoides 2n=34, A. albus 2n=32, A. viridis 2n = 34, A. lividus 2n = 34, A. tricolor 2n = 34. The number in A. roxburghianus is reported here for the first time. The basic chromosome numbers in this genus are x = 16 and x = 17 and both numbers are found in sect. Amaranthus and sect. Blitopsis. The chromosomes in this genus are very small in size, hampering a detailed karyotype analysis.
Keywords:Amaranthus  Chromosome number  Basic chromosome number
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