RESISTANCE OF SOME NEWLY BRED WHEAT LINES FOR NET BLOTCH DISEASE UNDER RAINFED CONDITIONS | ||||
| Journal of Plant Production | ||||
| Article 8, Volume 27, Issue 12, December 2002, Page 8073-8080 PDF (479.55 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2002.257192 | ||||
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| Authors | ||||
| Ahlam M. Gowily1; K. I. Zaki1; S. A. N. Afiah2 | ||||
| 1Plant Protection Dept., Desert Res. Center, El-Matareya, Cairo, Egypt. | ||||
| 2Plant Genet. Res. Dept., Desert Res. Center, El-Matareya, Cairo, Egypt. | ||||
| Abstract | ||||
| Two field experiments were carried out at Maryout Research Station of Desert Research Center under rainfed conditions with one supplementary irrigation at sowing date. Ten bread wheat genotypes were used to be tested for net blotch disease resistance, yield and its components under such conditions. Mean squares for all traits recorded in both growing seasons as well as combined data indicate that, years were insignificant for all cases. Mean squares for the ten genotypes were significant for all traits recorded in both growing seasons and also their combined data. Interaction, genotype x years were significant for spikes / plant, grains / spike and 1000-grain weight. The differences were more pronounced among genotypes. The newly bred lines (Mar. 5 and L- 263) seemed to be the superior genotypes regarding the combined data of grain yield and severity of net blotch disease. Sahel-1 and L- 144 ranked in the second order for yielding ability while, the score of disease severity classified them as moderately resistant for L-144 (3.1 – 5) and moderately sensitive for Sahel-1 (5.1- 7). Severity of net blotch disease negatively associated with yielding capacity over all wheat genotypes tested. Results obtained in both seasons and combined data over them proved the superiority of Gemmeiza 3 for 1ooo grain weight, L – 263 and Sids – 6 for number of grains / spike and Maryout 5 and L – 263 for grain yield / plant and severity of net blotch disease. | ||||
| Keywords | ||||
| Triticum aestivum L; Rainfed conditions; Net blotch disease; Helminthosporium teres; Newly bred lines; Correlation | ||||
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