Vol. 7, Issue 1 (2019)
Screening of single cross hybrids of maize for resistance to turcicum leaf blight [Exserohilum turcicum (Pass.) Leonard and Suggs]
Author(s): BC Chandana and SK Deshpande
Abstract: In the present study an attempt has been made to screen the 72 hybrids along with parents to establish their disease performance under artificially inoculated condition against turcicum leaf blight. Disease score and percent disease index were recorded for the 72 hybrids and parents. The study revealed that 19 hybrids possessed a disease score of 0, 33 hybrids scored 1 and 20 scored disease score 2 at the time of tasseling. The range of per cent disease index was 0 to 28.6 per cent. During the season of crop growth there was much incidence of disease, which made possible differentiation of hybrids into different reaction. One hybrid possessed a disease score of 1, 15 hybrids scored 2, with highly resistant and resistant reaction, respectively. Among the crosses, the range of per cent disease index was 22.86 to 68.57 per cent. 34 hybrids showed less than 45 per cent disease index falling under moderately tolerant category and 26 hybrids showed more than 50 per cent disease index falling under susceptible category. Among the male lines RNLB4611, BM1 and BM32 recorded highest per cent disease, while the female lines viz., BM36, BM83 and BM259 found with high per cent disease index were found to be susceptible at 20DAT.
Pages: 2148-2152 | 302 Views 43 Downloads
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How to cite this article:
BC Chandana, SK Deshpande. Screening of single cross hybrids of maize for resistance to turcicum leaf blight [Exserohilum turcicum (Pass.) Leonard and Suggs]. Int J Chem Stud 2019;7(1):2148-2152.
