National Academy of Agricultural Sciences (NAAS)
|
PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Field experiment was conducted to study the role different weather variables on infection of Karnal bunt (KB) disease in Wheat. For the study eighty four recombinant inbred lines (RILs) of wheat cross, Aldan (resistant) and WH 542 (susceptible) were grown in randomized block design with three replications during season of year 2011-2012 and 2012-2013. The screening of material was made under artificial conditions in field areas. Inoculum was prepared from 10-12 days old active culture of N. indica. Five spikes of each entry were inoculated with 2 ml of inoculum using hypodermic syringe. Disease expression showed during both the years. After harvest, bunted grains were assessed for percent incidence (PI) and coefficient of incidence (CI). Humid Thermal Index (HTI) calculated was ranged from 1.9-5.4 during 2011-12 from November 2011 to April 2012 with average 3.8 for the season. Whereas, during year 2012-13, range of HTI was 2.1-5.2 with seasonal average 3.6. The data indicated that among various meteorological factors, rainfall has shown major effect on the infection of KB in wheat during both the years with very high R2 value 1.00. Study revealed that compared to other weather variables; rainfall played major role for establishment of infection at boot leaf stage of the crop.
Citations |
 |
 |
 |
 |
