长芒猬草与华山新麦草属间杂种的形态学和细胞学研究

doi:10.7523/j.issn.2095-6134.2002.5.005

中国科学院大学学报 ›› 2002, Vol. 40 ›› Issue (5): 421-427.DOI: 10.7523/j.issn.2095-6134.2002.5.005

长芒猬草与华山新麦草属间杂种的形态学和细胞学研究

张海琴,周永红,郑有良,杨瑞武,丁春邦

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: 张海琴

Morphology and cytology of intergeneric hybrids between Hystrix duthiei ssp. longearistata and Psathyrostachys huashanica （Poaceae: Triticeae）

ZHANG Hai-Qin, ZHOU Yong-Hong, ZHENG You-Liang, YANG Rui-Wu, DING Chun-Bang

Received:1900-01-01 Revised:1900-01-01 Published:2002-09-10
Contact: ZHANG Hai-Qin

摘要/Abstract

摘要：

为研究长芒猬草Hystrix duthiei ssp．longearistata的染色体组成，将其与华山新麦草Psathyrostachys

huashanica进行了人工杂交，获得杂种F₁。对亲本及杂种F₁，花粉母细胞减数分裂染色体配对行为、繁育

特性和形态特征进行了比较分析。结果表明：杂种F₁的许多形态特征介于父母本之间，花粉完全不育，

结实率为0；杂种F₁花粉母细胞减数分裂中期Ⅰ染色体配对较高，55.12％的细胞形成5个或6个二价

体，其构型为：9.83Ⅰ+5.46Ⅱ+0.07Ⅲ，C-值为0.57。以上结果表明H．duthiei ssp．Longearistata含有

Ns染色体组。本文还讨论了Hystrix与Leymus的关系。

关键词: 长芒猬草, 华山新麦草, 属间杂交, 减数分裂, 染色体组, 染色体配体, 亲缘关系

Abstract:

In order to determine its genomic constitution, Hystrix duthiei ssp. longearistata was

crossed with Psathyrostachys huashanica. Hybrids were obtained successfully from this combination.

Morphology, fertility and chromosome pairing behavior in meiosis of the parents and their hybrids F₁

were investigated. The results showed obvious morphological differences between H. duthiei ssp.

longearistata and P. huashanica, and intermediate spikes of the F₁ plants between the two parental

species. The hybrids were completely sterile. Chromosome pairing at MI of PMCs in F₁ hybrids was

relatively high and 55.12% of PMCs showed 5 or 6 bivalents per cell. Meiotic configurations were

9.83 Ⅰ + 5.46 Ⅱ+ 0.07 Ⅲ, with C-value of 0. 57, which indicated that H. duthiei ssp.

longearistata and P. huashanica should share one Ns genome. The relationship between Hystrix

and Leymus was also discussed.

Key words: Hystrix duthiei ssp. Longearistata, Psathyrostachy huashanica, Intergeneric hybrid, Meiosis, Genome, Chromosome pairing, Relatipnship

张海琴,周永红,郑有良,杨瑞武,丁春邦. 长芒猬草与华山新麦草属间杂种的形态学和细胞学研究[J]. 中国科学院大学学报, 2002, 40(5): 421-427.

ZHANG Hai-Qin, ZHOU Yong-Hong, ZHENG You-Liang, YANG Rui-Wu, DING Chun-Bang. Morphology and cytology of intergeneric hybrids between Hystrix duthiei ssp. longearistata and Psathyrostachys huashanica （Poaceae: Triticeae）[J]. , 2002, 40(5): 421-427.

[1]	陈劲枫, 庄飞云, 逯明辉, 钱春桃, 任刚. 采用SSR和RAPD标记研究黄瓜属（葫芦科）的系统发育关系[J]. 中国科学院大学学报, 2003, 41(5): 427-435.
[2]	周永红,郑有良,杨俊良,颜济,贾继增. 利用RAPD分子标记评价仲彬草属的种间关系[J]. 中国科学院大学学报, 2000, 38(6): 515-521.

长芒猬草与华山新麦草属间杂种的形态学和细胞学研究

Morphology and cytology of intergeneric hybrids between Hystrix duthiei ssp. longearistata and Psathyrostachys huashanica （Poaceae: Triticeae）

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 2

编辑推荐

Metrics

本文评价

访问统计

联系我们