Arid
DOI10.3103/S0095452717050061
First detection of cytomixis and its consequences in Thalictrum cultratum Wall. (Ranunculaceae)
Kumar, Puneet1; Singhal, V. K.2; Srivastava, S. K.1
通讯作者Kumar, Puneet
来源期刊CYTOLOGY AND GENETICS
ISSN0095-4527
EISSN1934-9440
出版年2017
卷号51期号:5页码:384-390
英文摘要

small fragments, 15) PMCs, variable sized pollen grains and pollen sterility (20%). The curre In current paper, we studied the meiotic chromosome number and details of cytomixis recorded for the first time in Thalictrum cultratum Wall. from the high altitude areas of northwest Himalaya (India). Cytomixis, the phenomenon of inter PMC (pollen mother cell) migration of chromatin material has been reported in many angiosperms and other groups of plants, but there is no published report in Thalictrum cultratum. All the presently studied accessions of the species existed at diploid level (x = 7). The present chromosome count of n = 14 has been reported for the first time from the study area. The cytological stability of any plant is an important consideration in view of its existence in nature. Meiotic disturbances can impose threat to the reproductive potential of plant. Current study reveals the occurrence of inter PMC migration of chromatin material. In present investigation, the phenomenon of cytomixis can be observed between 2 to 9 PMCs. Chromatin migration occurs through narrow and broad cytoplasmic channels or occasionally fused together during metaphase-I and anaphase-I. Cytomixis resulted in the formation of hypo- (n = 2, 2 + 1 small fragment, n = 3 + 3 small fragments, 4, 5 + extra mass of chromatin, 13) and hyperploid (n = 7 + 2 small fragments, 8 + 2 small fragments, 14, 14 + 2nt study reveals that cytomixis is responsible for formation of PMCs with variable chromosomes (hypoand hyperploid) and pollen grains of heterogeneous sizes and pollen sterility in T. cultratum. This is the first report of cytomixis in the species.


英文关键词chromatin migration chromosomes hypo-and hyperploid PMCs meiosis pollen grains
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000412021200009
WOS关键词POLLEN MOTHER CELLS ; MEIOTIC ABNORMALITIES ; L. RANUNCULACEAE ; HIMALAYAS INDIA ; COLD DESERTS ; MEIOSIS ; STERILITY ; REGIONS ; PLANT ; ROYLE
WOS类目Genetics & Heredity
WOS研究方向Genetics & Heredity
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/198268
作者单位1.Botan Survey India, Northern Reg Ctr, Dehra Dun 248195, Uttarakhand, India;
2.Punjabi Univ, Dept Bot, Patiala, Punjab, India
推荐引用方式
GB/T 7714
Kumar, Puneet,Singhal, V. K.,Srivastava, S. K.. First detection of cytomixis and its consequences in Thalictrum cultratum Wall. (Ranunculaceae)[J],2017,51(5):384-390.
APA Kumar, Puneet,Singhal, V. K.,&Srivastava, S. K..(2017).First detection of cytomixis and its consequences in Thalictrum cultratum Wall. (Ranunculaceae).CYTOLOGY AND GENETICS,51(5),384-390.
MLA Kumar, Puneet,et al."First detection of cytomixis and its consequences in Thalictrum cultratum Wall. (Ranunculaceae)".CYTOLOGY AND GENETICS 51.5(2017):384-390.
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