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Use of expressed sequence tag microsatellite markers for population genetic research of Helicoverpa armigera (Lepidoptera: Noctuidae) from India

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Title Use of expressed sequence tag microsatellite markers for population genetic research of Helicoverpa armigera (Lepidoptera: Noctuidae) from India
Not Available
 
Creator Thiruvengadam Venkatesan
Vaddi Sridhar
Yan R. Tomason
Sushil Kumar Jalali
Gajanan T. Behere
Rajagopalan M. Shanthi
Ravinder Kumar
Venkata Gopinath Vajja
Padma Nimmakayala
Umesh K. Reddy
 
Subject Cotton bollworm, Helicoverpa armigera
Resistance
Microsatellite markers
 
Description Not Available
Cotton bollworm, Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae), is a serious
pest of several crops throughout the world, representing millions of United States of America
dollars worth of damage. This pest can adapt to various cropping systems in a wide geographical range
and has high migratory potential. It features high fecundity and can develop resistance to almost all
insecticides used for its management. Several investigations to develop microsatellite markers for
H. armigera have not been successful because of the paucity of microsatellites in the lepidopteran
genome. As well, collections of H. armigera from cotton fields of southern and western India were not
yet studied for molecular genetic diversity. The current study aimed to screen publicly available
expressed sequence tag resources for simple sequence repeats and assess their potential as DNA
markers for assessment of gene flow between collections of southern and western India. We identified
30 polymorphic microsatellites for potential use in diversity analysis of H. armigera collections.
Genetic diversity analysis revealed that the collections were widely diverse with population
differentiation index (Fst) of 0.17. Furthermore, gene flow analysis revealed a mean frequency of
private alleles of 11% within the collections. The microsatellite resources we developed could be
widely used for molecular diversity or population genetic research involving this important pest of
cotton and food crops.
Not Available
 
Date 2019-03-21T03:56:47Z
2019-03-21T03:56:47Z
2015-07-14
 
Type Research Paper
 
Identifier Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/17580
 
Language English
 
Relation Not Available;
 
Publisher Not Available