Papers

SCREENING OF ADVANCED WHEAT GENOTYPES TO BIPOLARIS LEAF BLIGHT UNDER INOCULATED AND FIELD CONDITIONS (Pages : 19 - 26)

K.K. ROY, K. MUSTARIN, M.M.E. RAHMAN AND M.M.A. REZA

Seventy six advanced wheat genotypes including checks (susceptible and resistant) were evaluated against Bipolaris leaf blight disease under artificially inoculated and natural field conditions during the two consecutive years from 2017-18 and 2018-19 at Bangladesh Wheat and Maize Research Institute, Nashipur, Dinajpur to determine the sources of resistance in wheat germplasm. The tested lines/varieties showed different levels of resistance and susceptible reactions against the disease. The screening results revealed that none of the tested advanced lines was found as immune or highly resistant. Under inoculated condition (two year mean), among the lines/varieties tested, 2 were graded as resistant, 8 moderately resistant, 22 moderately susceptible, 36 susceptible and the rest of 8 showed highly susceptible reaction whereas under field condition, 6 were graded as resistant, 49 moderately resistant, 17 moderately susceptible, and 4 line as susceptible. The advanced lines BAW 1254X, BAW 1278, BAW 1316, BAW 1317 and BAW 1318 were observed resistant to moderately resistant reaction under both inoculated and field conditions. The two resistant checks MILAN/SHA 7 and CHIRYA 3 showed resistant reaction under both conditions while the susceptible varieties (SONALIKA, KANCHAN and CIANO 79) displayed high level of disease infection. On the other hand, our adapted varieties SHATABDI, BARI Gom 29 and BARI Gom 30 showed resistant to moderately resistant reaction in both conditions but other varieties showed susceptible reactions. These above stated advanced lines were found as good materials to be incorporated in breeding for disease resistance program in future.Download


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