Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/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
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ISSN | 0006-3134 |
EISSN | 1573-8264 |
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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