Arid
DOI10.1007/s10535-010-0031-1
Cytomixis and associated meiotic abnormalities affecting pollen fertility in Clematis orientalis
Kumar, P.; Singhal, V. K.; Kaur, D.; Kaur, S.
通讯作者Singhal, V. K.
来源期刊BIOLOGIA PLANTARUM
ISSN0006-3134
EISSN1573-8264
出版年2010
卷号54期号:1页码:181-184
英文摘要

Present cytological investigations from the cold desert regions of Lahaul-Spiti and Kinnaur (India) record the first ever tetraploid (2n= 32) chromosome count and cytomixis in Clematis orientalis L. var. acutifolia Hook. f. et Thoms. The phenomenon of cytomixis (9.33 - 29.80 %) involving chromatin transfer among 2 - 3 proximate pollen mother cells (PMCs) during male meiosis occurs through narrow and broad cytoplasmic channels from early prophase to tetrad stage. However, frequency of its occurrence during the later meiotic stages is rather low. Chromatin transfer results into the formation of hypo-, hyperploid and enucleated PMCs. Various meiotic abnormalities associated with cytomixis such as chromatin stickiness, pycnotic chromatin, interbivalent connections, out of plate bivalents, late disjunction of bivalents, and laggards and bridges resulted into some pollen sterility (16.33 - 49.30 %) and heterogeneous pollen grains size.


英文关键词chromatin stickiness coenocytes heterogeneous size of pollen grains laggards and bridges micronuclei morphovariants
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000276699500031
WOS关键词L. ; MEIOSIS ; SIZE
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/163457
作者单位Punjabi Univ, Dept Bot, Patiala 147002, Punjab, India
推荐引用方式
GB/T 7714
Kumar, P.,Singhal, V. K.,Kaur, D.,et al. Cytomixis and associated meiotic abnormalities affecting pollen fertility in Clematis orientalis[J],2010,54(1):181-184.
APA Kumar, P.,Singhal, V. K.,Kaur, D.,&Kaur, S..(2010).Cytomixis and associated meiotic abnormalities affecting pollen fertility in Clematis orientalis.BIOLOGIA PLANTARUM,54(1),181-184.
MLA Kumar, P.,et al."Cytomixis and associated meiotic abnormalities affecting pollen fertility in Clematis orientalis".BIOLOGIA PLANTARUM 54.1(2010):181-184.
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