Arid
DOI10.1508/cytologia.75.363
Male Meiosis, Microsporogenesis and Pollen Grain Study in Inula cuspidata CB Clarke (Asteraceae)
Kaur, Dalvir; Singhal, Vijay Kumar; Gupta, Raghbir Chand
通讯作者Singhal, Vijay Kumar
来源期刊CYTOLOGIA
ISSN0011-4545
出版年2010
卷号75期号:4页码:363-368
英文摘要

Male meiosis, microsporogenesis and pollen grain studies have been made on 11 accessions of Inula cuspidata C. B. Clarke from the cold desert regions of the Kinnaur district, Himachal Pradesh, India. All the accessions share the same meiotic chromosome number,n=10. Out of these, 10 accessions show regular chromosome pairing resulting into normal 10 bivalents formation. The meiotic analysis in these accessions reveals that 2 bivalents are of comparatively large size. These large-sized bivalents in 6 accessions show abnormalities in their disjunctions resulting into laggards/bridges during anaphases/telophases and micronuclei in tetrads and consequently some pollen sterility. In one of the accessions of l. cuspidata scored from Tapri, meiotic course is irregular due to the presence of a high frequency of univalents during the first meiosis. These univalent chromosomes during subsequent stages of meiosis fail to organize at the spindle plate and remain scattered in the cytoplasm. Consequently, the majority of the PMCs in the accession depict irregular anaphases/telophases, formation of multiple nuclei and abnormal sporads (dyads, triads, polyads and tetrads with micronuclei). The accession forms a large number of malformed pollen grains consisting of unstained/sterile and heterogeneous sized stained/fertile pollen grains. The accession showing such a abnormal meiotic behaviour could be attributed to its hybrid nature where the chromosome of the 2 putative parents is left unpaired during earlier stages of prophase I.


英文关键词I. cuspidata Male meiosis Univalents Pollen sterility Heterogeneous sized pollen grains
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000289383200005
WOS关键词CYTOLOGICAL INVESTIGATIONS ; INDIAN COMPOSITAE ; MUTANT
WOS类目Cell Biology ; Genetics & Heredity
WOS研究方向Cell Biology ; Genetics & Heredity
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/163798
作者单位Punjabi Univ, Dept Bot, Patiala 147002, Punjab, India
推荐引用方式
GB/T 7714
Kaur, Dalvir,Singhal, Vijay Kumar,Gupta, Raghbir Chand. Male Meiosis, Microsporogenesis and Pollen Grain Study in Inula cuspidata CB Clarke (Asteraceae)[J],2010,75(4):363-368.
APA Kaur, Dalvir,Singhal, Vijay Kumar,&Gupta, Raghbir Chand.(2010).Male Meiosis, Microsporogenesis and Pollen Grain Study in Inula cuspidata CB Clarke (Asteraceae).CYTOLOGIA,75(4),363-368.
MLA Kaur, Dalvir,et al."Male Meiosis, Microsporogenesis and Pollen Grain Study in Inula cuspidata CB Clarke (Asteraceae)".CYTOLOGIA 75.4(2010):363-368.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Kaur, Dalvir]的文章
[Singhal, Vijay Kumar]的文章
[Gupta, Raghbir Chand]的文章
百度学术
百度学术中相似的文章
[Kaur, Dalvir]的文章
[Singhal, Vijay Kumar]的文章
[Gupta, Raghbir Chand]的文章
必应学术
必应学术中相似的文章
[Kaur, Dalvir]的文章
[Singhal, Vijay Kumar]的文章
[Gupta, Raghbir Chand]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。