International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 1
First page : (467) Last page : (474)
Article doi: http://dx.doi.org/10.18782/2320-7051.5494
Resistance Screening of Groundnut Advanced Breeding Lines against Collar Rot and Stem Rot Pathogens
V. Divya Rani1*, Hari Sudini2, P. Narayan Reddy3, K. Vijay Krishna Kumar4 and
G. Uma Devi5
1Professor Jayashankar Telangana State Agricultural University, Hyderabad, Telangana, India
2International Crops Research Institute for the Semi-Arid Tropics, Patancheru, India
3Professor Jayashankar Telangana State Agricultural University, Hyderabad, Telangana, India
4Acharya N G Ranga Agricultural University, Andhra Pradesh, India
5Professor Jayashankar Telangana State Agricultural University, Hyderabad, Telangana, India
*Corresponding Author E-mail: divyavallapu@gmail.com
Received: 21.08.2017 | Revised: 29.09.2017 | Accepted: 6.10.2017
ABSTRACT
Forty groundnut advanced breeding lines along with susceptible checks JL-24, J-11 and TMV-2 were used for collar rot (Aspergillus niger) and stem rot (Sclerotium rolfsii) disease screening. Based on the per cent number of plants affected by the collar rot pathogen, the advanced breeding lines were categorized into four groups. The lines present in group I (Resistant) having < 15% incidence, group II (Moderately resistant) having 15.1 to 30%, group III (Susceptible) having 30.1 to 45 % and group IV (Highly susceptible) having > 45% incidence. Similarly among 40 breeding lines only three lines (ICGV86699, ICGV91114 and ICGV 89280) have shown stem rot disease reaction below 3 (up to 25 % plants were symptomatic) and considered to be moderately resistant to stem rot pathogen. The advanced breeding line ICGV99058 has recorded a disease reaction of 5 scale (> 50 % of the plants symptomatic) equal to the susceptible checks which is considered to be highly susceptible to stem rot pathogen.
Key words: Screening, Advanced breeding lines, Groundnut, Stem rot, Collar rot
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Divya Rani, V., Sudini, H., Reddy, P.N., Kumar, K.V.K. and Uma Devi, G., Resistance Screening of Groundnut Advanced Breeding Lines against Collar Rot and Stem Rot Pathogens, Int. J. Pure App. Biosci.6(1): 467-474 (2018). doi: http://dx.doi.org/10.18782/2320-7051.5494
