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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2017) [Effective from January 1, 2017]For more details click here
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2017)
[Effective from January 1, 2017]
For more details click here

ICV 2015: 85.95
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95
For more details click here
journals IJCMAS
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2015: 85.95
NAAS RATING 2017: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(4): 2683-2686
DOI: https://doi.org/10.20546/ijcmas.2017.604.312


Genetic Studies on Resistance to Jassid (Amrasca biguttula biguttula) in Segregating F2 Population of Interspecific (Gossypium hirsutum L. X Gossypium barbadense L.) Cotton
Utpal Roy1*, Rajesh S. Patil1, I.S. Katageri2, S.B. Patil3 and S.S. Udikeri3
1Department of Genetics and Plant Breeding
2Department of Biotechnology
 3Department of Entomology, University of Agricultural Sciences, Dharwad-580005, India
*Corresponding author
Abstract:

Studies on the genetic basis for resistance to jassid (Amrasca biguttula biguttula) was done in F2 segregating generation of one promising cross of interspecific cotton (Gossypium hirsutum L. X Gossypium barbadense L.) in the year 2015-16. The cross FQT-37 X SB-YF-425 segregated in the ratio of 13:3 for susceptibility and resistant. In the case of resistant type, all the plants were in grade II, implying moderate resistance. This gene action is called as inhibitory gene action. Here, one dominant gene produces the concerned phenotype, while its recessive allele produces contrasting phenotype. The second dominant gene, called inhibitory gene, has no effect of its own on the character in question; however, it can stop the expression of the dominant allele of the first gene. The development of high yielding jassid resistance genotypes has become more important in cotton cultivation today. Identification and use of a tolerant/resistant cultivar are of great relevance these days as it is eco-friendly and cost effective.


Keywords: Genetics, Interspecific cotton, Inhibitory gene action, Jassid, Resistance.
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How to cite this article:

Utpal Roy, Rajesh S. Patil, I.S. Katageri, S.B. Patil and Udikeri, S.S. 2017. Genetic Studies on Resistance to Jassid (Amrasca biguttula biguttula) in Segregating F2 Population of Interspecific (Gossypium hirsutum L. X Gossypium barbadense L.) Cotton.Int.J.Curr.Microbiol.App.Sci. 6(4): 2683-2686. doi: https://doi.org/10.20546/ijcmas.2017.604.312