01379naa a2200229 a 450000100080000000500110000800800410001902400490006010000180010924501600012726000090028752006530029665000180094965000190096765000090098665000100099565000120100565000170101765000230103470000160105777300760107312046042021-10-26       1997    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.1023/A:10058541288362DOI1 aPRABHU, A. S.  aDifferential sensitivity of callus derived from immature panicles of rice cultivars to the non-specific toxin of Pyricularia grisea.h[electronic resource]  c1997  aAn in vitro screening procedure was adapted to study the sensitivity of callus to the toxin picolinic acid of Pyricularia grisea in four rice cultivars. The lethal dose LD50 was determined on the basis of probit-log dosage response curve. The values of LD50 were 10, 51, 129 and 151 ppm for Tetep, Newbonnet, Labelle and M 201, respectively. The callus culture of cultivar Tetep, with a known broad spectrum of resistance, exhibited a high toxin sensitivity whereas the highly susceptible cultivar M 201 showed low sensitivity indicating the absence of relation between host plant specific resistance to blast and resistance of the callus to toxin.  aBlast disease  aPicolinic acid  aRice  aArroz  aBrusone  aOryza Sativa  aPyricularia Grisea1 aRUSH, M. C.  tPlant Cell, Tissue and Organ Culturegv. 50, n. 1, p. 13-18, July 1997.