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中国科学院大学学报 ›› 2002, Vol. 40 ›› Issue (5): 428-432.DOI: 10.7523/j.issn.2095-6134.2002.5.006

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国产十四种苋属植物的染色体数目

宋葆华,张学杰,李法曾,万鹏   

  • 收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2002-09-10
  • 通讯作者: 宋葆华

Chromosome numbers of 14 species in Amaranthus from China

SONG Bao-Hua, ZHANG Xue-Jie, LI Fa-Zeng, WAN Peng   

  • Received:1900-01-01 Revised:1900-01-01 Published:2002-09-10
  • Contact: SONG Bao-Hua

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

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.

Key words: Amaranthus, Chromosome number, Basic chromosome number