干旱区生态环境知识资源中心(Arid): Impact of Structural Heterozygosity on Pollen Fertility and Chiasma Frequency in Leontopodium jacotianum from the Cold Deserts of Ladakh (Jammu and Kashmir), India

Arid

DOI	10.1508/cytologia.84.251
	Impact of Structural Heterozygosity on Pollen Fertility and Chiasma Frequency in Leontopodium jacotianum from the Cold Deserts of Ladakh (Jammu and Kashmir), India
	Tantray, Younas Rasheed; Singhal, Vijay Kumar; Khan, Nissar Ahmad; Gupta, Raghbir Chand
通讯作者	Tantray, Younas Rasheed
来源期刊	CYTOLOGIA
ISSN	0011-4545
出版年	2019
卷号	84 期号:3 页码:250-253
英文摘要	Meiotic studies have been carried out on three plants of Leontopodium jacotianum from Cold deserts of Ladakh. The chromosome number of n=24 counted in all the plants adds a new tetraploid cytotype for the species. The plants collected from Zoji-La showed a normal meiotic course leading to high pollen fertility. However, the plants collected from Sankoo region of cold deserts of Ladakh, Jammu, and Kashmir showed abnormal meiosis caused by structural heterozygosity for reciprocal translocations. The structural heterozygosity was observed for the first time in the species. Chiasma frequency was also calculated by using one-way analysis of variance (ANOVA) in the plants to see the effect of reciprocal translocations. Besides reciprocal translocation, the plant also showed various meiotic abnormalities in the form of early disjunction of bivalents, chromatin bridges, and laggards. Structural heterozygosity and other meiotic abnormalities in the plant seem to be responsible for a reduction in pollen fertility.
英文关键词	Male meiosis Structural heterozygosity Cold desert Jammu and Kashmir Tetraploid Leontopodium jacotianum
类型	Article
语种	英语
国家	India
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000488419500012
WOS关键词	RECIPROCAL TRANSLOCATIONS ; HIMACHAL-PRADESH ; PARVATI VALLEY ; ASSOCIATIONS ; CHROMOSOMES ; L.
WOS类目	Cell Biology ; Genetics & Heredity
WOS研究方向	Cell Biology ; Genetics & Heredity
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215020
作者单位	Punjab Univ, Dept Bot, Patiala 147002, Punjab, India
推荐引用方式 GB/T 7714	Tantray, Younas Rasheed,Singhal, Vijay Kumar,Khan, Nissar Ahmad,et al. Impact of Structural Heterozygosity on Pollen Fertility and Chiasma Frequency in Leontopodium jacotianum from the Cold Deserts of Ladakh (Jammu and Kashmir), India[J]. Arizona State University,2019,84(3):250-253.
APA	Tantray, Younas Rasheed,Singhal, Vijay Kumar,Khan, Nissar Ahmad,&Gupta, Raghbir Chand.(2019).Impact of Structural Heterozygosity on Pollen Fertility and Chiasma Frequency in Leontopodium jacotianum from the Cold Deserts of Ladakh (Jammu and Kashmir), India.CYTOLOGIA,84(3),250-253.
MLA	Tantray, Younas Rasheed,et al."Impact of Structural Heterozygosity on Pollen Fertility and Chiasma Frequency in Leontopodium jacotianum from the Cold Deserts of Ladakh (Jammu and Kashmir), India".CYTOLOGIA 84.3(2019):250-253.