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 |
India is among the topmost rice producers and consumers in the world. Rice crop is susceptible to various bacterial diseases and one such commonly known disease is Bacterial Blight (BB) caused by the pathogen Xanthomonas oryzae pv. oryzae (Xoo) and is known to severally impact rice crop yield. Rice variety HKR-47 is widely popular amongst rice farmers and consumers in Haryana because of its high yield, medium slender grains, and excellent cooking and eating qualities, however, HKR-47 exhibits less endurance to BB. The aim of the study conducted at CCS Haryana Agricultural University was to investigate the genetic potential of BC3F3 pyramided rice genotypes (cross HKR-47 x IRBB-60) having resistance genes (Xa21, xa13 and xa5). These genotypes were tested for virulence against BB under artificial conditions using Clip method of artificial inoculation. On average, five leaves per plant were inoculated and visual scoring was done after 14 days. Rating of disease reaction was based on a 0-9 scale of the standard evaluation system (SES) for rice. Rice genotypes with all three genes exhibited relatively low mean lesion length compared to single or double combinations thus establishing higher resistance of three-gene genotypes to BB. The lines obtained in our study can be used as genetic resources for BB resistance in breeding programs that will be paving the way for an environmentally-friendly means to achieve a better disease management.
Citations |
 |
 |
 |
 |
