Assessment of intra- and inter-specific competition between wheat (Triticum aestivum) and wild oat (Avena fatua) by reciprocal yield model and competition indices
1
Assist. Prof., Islamic Azad University, Miandoab branch
2
Assoc. Prof., Tabriz University
3
Assist. Prof., Tabriz University
4
Lecturer, Islamic Azad University, Miandoab branch
Abstract
To determine intra- and inter-specific competition between wheat and wild oat by reciprocal yield model and other competition indices, a pot factorial experiment based on completely randomized design with 4 replications was carried out. The treatments were including four densities of wheat and wild oat as additive series (0, 2, 5 and 8 plants/pot). Results showed that interspecific competition coefficient of wild oat on wheat was greater than that of wheat on wild oat. Both species had low intraspecific competition effects relative to interspecific effects. Wheat plants were more susceptible to intraspecific competition than wild oat and relative competitive ability of wheat was lower than wild oat. Therefore, wheat plants were more affected by wild oat plants comparing to wheat plants. Relative yield in studied mixed relations was less than 1 or equal 1 indicating that wild oat and wheat plants compete on the same resources. Based on relative crowding coefficients analysis, wild oat was competitor than wheat. According to relative competitive effects, competitive ability of wild oat regard to biological and grain yield were 3.48 and 2.9 times of wheat, respectively.
Sorkhi Lalelou, F., Dabbagh Mohammadi Nasab, A., Shafag Kolvanagh, J., & Fateh, M. (2012). Assessment of intra- and inter-specific competition between wheat (Triticum aestivum) and wild oat (Avena fatua) by reciprocal yield model and competition indices. Cereal Research, 2(2), 137-147.
MLA
Farshad Sorkhi Lalelou; Adel Dabbagh Mohammadi Nasab; Jalil Shafag Kolvanagh; Mojtaba Fateh. "Assessment of intra- and inter-specific competition between wheat (Triticum aestivum) and wild oat (Avena fatua) by reciprocal yield model and competition indices". Cereal Research, 2, 2, 2012, 137-147.
HARVARD
Sorkhi Lalelou, F., Dabbagh Mohammadi Nasab, A., Shafag Kolvanagh, J., Fateh, M. (2012). 'Assessment of intra- and inter-specific competition between wheat (Triticum aestivum) and wild oat (Avena fatua) by reciprocal yield model and competition indices', Cereal Research, 2(2), pp. 137-147.
VANCOUVER
Sorkhi Lalelou, F., Dabbagh Mohammadi Nasab, A., Shafag Kolvanagh, J., Fateh, M. Assessment of intra- and inter-specific competition between wheat (Triticum aestivum) and wild oat (Avena fatua) by reciprocal yield model and competition indices. Cereal Research, 2012; 2(2): 137-147.
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