Document Type : Research Paper


Assistant Professor, North Khorasan Agricultural and Natural Resources Research and Education Center, AREEO, Bojnord, Iran.


In order to evaluate grain yield of wheat cultivars in two planting dates and determination of proper cultivars for autumn and entezari culture, a study is carried out during two years, between 2015 and 2017 in Torogh research station in Mashhad. Two planting dates of autumn and entezari culture are the main plot and 16 genotypes of wheat (14 cultivars and 2 promising lines), including Baran, Rasad, Sardari, Sabalan, Crosssabalan, Rijav, Karim, Koohdasht, Dehdasht, Azar2, Homa, Ohadi, Ghaboos, and Aftab cultivars are the subplot. Results show that significant difference exist between cultivars in terms of agronomic characteristics and grain yield. Flowering date of cultivars differ and no cultivar start flowering in the optimum temperature range for flowering. Cultivars of Karim and Rijav with mean yield of 1430 and 1326 kg/ha, respectively, have had the maximum yield and cultivars of Ohadi and Rasad with mean yield of 893 and 925 kg/ha, respectively, the minimum. The difference between maximum and minimum grain yield is about 60%. Delay in planting leads to delay in pollination in all cultivars; therefore, autumn planting date could be recommended. Also for autumn planting, cultivars of Karim and Rijav can be advised and for entezari planting date only spring cultivars such as Karim and Aftab are recommended.


Anonymous. (2017). Yearbook of agricultural statistics. Agricultural Jihad of Khorasan Razavi Organization. Deputy of programming and economic affairs, from Http:// (In Persian)
Bloomfield, M.T., Hunt, J.R., Trevaskis, B., Ramm, K., & Hyles, J. (2018). Ability of alleles of PPD1 and VRN1 genes to predict flowering time in diverse Australian wheat (Triticum aestivum) cultivars in controlled environments. Crop & Pasture Science, 69, 1061-1075.
Brdar, M.D., Kraljević-Balalić, M.M., & Kobiljski, BD. (2008). The parameters of grain filling and yield components in common wheat (Triticum aestivum L.) and durum wheat (Triticum turgidum L. var. durum). Central European Journal of Biology, 3, 75-82.
Cammarano, D., Payero J., Basso B., Stefanova, L., & Grace, P. (2012). Adapting wheat sowing dates to projected climate change in the Australian subtropics: analysis of crop water use and yield. Crop & Pasture Science, 63, 974-986.
Cane, K., Eagles, H.A., Laurie, D.A., Trevaskis, B., Vallance, N., Eastwood, R.F., Gororo, N.N., Kuchel, H., & Martin, P.J. (2013). Ppd-B1 and Ppd-D1 and their effects in southern Australian wheat. Crop & Pasture Science, 64, 100-114.
Dastfal, M., Brati V., Emam Y., Haghighatnia H., & Ramazanpour, M. (2011). Evaluation of Grain Yield and Its Components in Wheat Genotypes under Terminal Drought Stress Conditions in Darab Region. Seed and plant production, 27, 195-217. (In Persian)
Dreccer, M.F., Borgognone, M.G., Ogbonnaya, F.C., Trethowan, R.M., &Winter, B. (2007). CIMMYT-selected derived synthetic bread wheats for rainfed environments: Yield evaluation in Mexico and Australia. Field Crops Research, 100, 218-228.
Flohr, B.M., Hunt, J.R., Kirkegaard, J.A., & Evans, J.R. (2017). Water and temperature stress define the optimal flowering period for wheat in south-eastern Australia. Field Crops Research, 209, 108-119.
Kirkegaard, J.A., & Hunt, J.R. (2010). Increasing productivity by matching farming system management and genotype in water-limited environments. Journal of Experimental Botany, 61, 4129-4143.
Modhej, A., Naderi A., Emam Y., Aynehband A., Normohamadi G., & Kaivan E. (2011). Evaluation of the effects of post-anthesis heat stress and nitrogen levels on grain yield and grain growth of wheat genotypes under Khuzestan conditions. Agronomy Journal (Pajouhesh & Sazandegi), 92, 9-17. (In Persian)
Morgan, G., Shaffer, O.J., Vietor, D., & Baughman, T.A. (2011). Wheat Grain Yield Responses to Seeding Date and Rate under Rainfed Conditions in Texas. Online. Crop Management, doi:10.1094/CM-2011-0518-01-RS.
Otegui, M.E., & Slafer, G.A. (2004). Increasing cereal yield potential by modifying developmental traits. Proceedings of the 4th International Crop Science Congress, 26 Sep-1 Oct 2004, Brisbane, Australia. Web site
Powell, N., Ji X., Ravash R., Edlington J., & Dolferus, R. (2012). Yield stability for cereals in a changing climate. Functional Plant Biology, 39, 539-552.
Regan, K.L., Siddique, K.H.M., Tennant, D., & Abrecht, D.G. (1997). Grain yield and water use effciency of early maturing wheat in low rainfall Mediterranean environments. Australian Journal of Agricultural Research, 48, 595-603.
Sharifi, H.R. (2016). Response of Phenological Development Stages, Grain Yield and Yield Components of Bread Wheat Cultivars with Different Growth Habits to Delayed Planting. Seed and Plant Production, 32, 21-44. (In Persian)
Sharma, D.L., D’Antuono, M.F., Anderson, W.K., Shackley, B.J., Zaicou-Kunesch, C.M., & Amjad, M. (2008). Variability of optimum sowing time for wheat yield in Western Australia. Australian Journal of Agricultural Research, 59, 958-970.
Tapley, M., Ortiz, B.V., Santen, E., Balkcom, K.S., Mask, P., & Weaver, D.B. (2013). Location, Seeding Date, and Variety Interactions on Winter Wheat Yield in Southeastern United States. Agronomy Journal, 105, 509-518.
Wang, B., Liu, D.L., Asseng, S., Macadame, I., & Yua, Q. (2015). Impact of climate change on wheat flowering time in eastern Australia. Agricultural and Forest Meteorology, 209, 11-21.