Effect of sowing dates, seeding rates, awn and flag leaf removal on yield and its components of Adana-99 bread wheat cultivar

Shang  Haseeb Abdulqader  Noori1

1 Department of Food Science, College of Agricultural Sciences, University of Sulaimani, Kurdistan Region, Iraq

Original: 24/12/2017, Revised: 09/01/2018, Accepted: 06/02/2018, Published online:

DOI Link:  https://doi.org/10.17656/jzs.10697


The experiment was performed, to assess the effect of different planting dates (15th Nov. 2015 to 25th Feb. 2016) each 20 days interval, different plant densities (120, 140, 160,180, 200 and 220) kg/ha and different removal treatments (control, awn, flag leaf and both- awn+flag leaf) removal and their interaction on grain yield and yield components of bread wheat cultivar (Adana-99). The experimental arrangement was a (6×6×4) factorial RCBD with three replicates. Grain yield with some of its components was measured such as (spike length, spike weight, number of spikelet/spike, number of grain/spike, weight of grain/spike, 1000- grain weight, harvest index, biological yield and grain yield). The results of grain yield and its components can be summarized as follows: the planting dates significantly affect on these characters, (15th Nov. 2015) showed maximum values for all characteristics with the exception of  harvest index produced by (25th Dec. 2015). The result of the effect of plant density on studying characters was significant, plant density 120 kg/ha produced maximum values for all characters with the exception of harvest index recorded by 180 kg/ha, biological yield produced by 220 kg/ha and grain yield recorded by 200 kg/ha. While the effect of removal treatments on yield and its components significantly responded to these effects. The control treatments produced maximum values for all characters with the exception of harvest index produced by both (awn+flag leaf) removal treatments.

Key Words: Wheat, Planting dates, plant densities, removal treatments, yield and its components.  


[1] Mollasadeghi, V. and Shahryari, R. Important morphological markers for improvement of yield in bread wheat, Advences Environ Biol, Vol. (5), No.3, pp.538-542. (2012).

 [2] Minhas, P.S., J. Rane, and R.K. Pasala. “Abiotic Stresses in Agriculture: An Overview. In Abiotic Stress Management for Resilient Agriculture”. Springer, ISBN: 9811057435, pp.3-8. (2017).

[3] Tiwari, M., D. Sharma, and P.K. Trivedi. “Artificial Micro RNA mediated gene silencing in plants: progress and perspectives”. Plant molecular biology,  Vol. (86), No.1-2, pp.1-18. (2014). 

[4] Ahmadi, A., Ehsanzadeh, P. and Jabari, F.“Introduction to plant physiology, University of Tehran, Tehran. pp.653. (2004).

[5] Madani A., Shirani-Rad A., Pazoki A., Nourmohamadi G., Zarghami R. and Mokhtassi- Bidgoli A.“The impact of source or sink limitations on yield formation of winter wheat (Triticum aestivum L.) due to post- anthesis water and nitrogen deficiencies”, Plant soil Environment, Vol. (56), pp.218-227. (2010).

[6] Emam, Y. and Seghatoleslami, MJ. Crop Yield. Shiraz University Press. Iran, ISBN.964-462-362-2 593. (2005).

[7] Alpay, B., T. Genctan, and O. Bilgin. “Effect of removal of any photosynthetic organs of yield components in bread wheat (Triticum aestivum L.) ”, Bangladesh j. Agril. Res. Vol. (36), No.1, pp.1-12. (2011).

[8] Reynolds, M. and Tuberosa, R. “Translational  research impacting on crop productivity in drought- prone environments”, Current opinion in Plant Biology, Vol. (11), pp.171-179. (2008).

[9] Saeidi, M., F. Moradi and S. Jalali- honarmand. “The effect of post anthesis source limitation treatments on wheat cultivars under water deficit”, Australian journal of crop science, Vol. (6), No.7, pp.1179-1187. (2012).

[10] Alvaro, F.C., L.F. Royo, M. Garcia and D. Villegas. “Grain filling and dry matter translocation responses to source- sink modifications in a historical series of durum wheat”, Crop science, Vol. (48), pp.1523-1531. (2007).

[11] Alam, M.S., A. H.M. Rahman, M.N. Nesa, S.k. Khan and N.A. Siddique. “Effect of source and/ or sink restriction on the grain yield in wheat ”, Journal of Applied Sciences Research, Vol.(4), No.3, pp.258-261. (2008).

[12] Maydup, M.L., M. Anotnietta, J.J. Guiamet, C. Graciano, J.R. Lopez and E.A. Tambussi. “The contribution of ear photosynthesis to grain filling in bread wheat (Triticum aestivum L.) , Field crops Research, Vol. (119), pp.48-58. (2010).

[13] Minhas, A.S.,  A.S Randhawa and  K. Chand. Effect of awns and leaf-blades on the grain yield of wheat (Triticum aestivum L. Em Thell) ”, CABI, the journal of research, Punjab agricultural university, pp.2. (2006).

[14] Larry, CP, Rosalind, AB, Reaper, JD and Earl, DV. “Radiation use efficiency and biomass production in soybean at different plant population densities ”, Crop Sci. Vol. (42), pp.172-177. (2002).

[15] Maddonni, G.A., Otegui, M.E. and Cirilo, A.G. “Plant population density, row spacing and hybrid effect on maize canopy architecture and light attenuation ” , Field Crop Research. Vol.(71), pp.183-193. (2001).

[16] Naseri, R., Fasihi, KH., Hatami, A. and Poursiahbidi, MM. “Effect of planting pattern on yield, yield components, oil and protein contents in winter safflower cv.sinai under rainfed conditions , Iranian Journal of Crop Science, (In Persian), Vol. (12), No.3, pp.227-238. (2010)..

[17] Kabesh, M.O., Sary, G.A., EL-Naggar, H.M., EL-Kramany, M.F. and S.H.B. Gehan. “Effect of sowing  methods and some bio-organic fertilization treatments on economic yield and yield parameter of wheat ”, Res. J. Agric. Biol. Sci. Vol. (5), pp.97-102. (2009).

[18] Nakano, H. and Morita, S. Impact of grain rate and nitrogen level on grain yield and protein content of the bread wheat cultivar Minaminkaore” in southwest Japan ”, Plant Produc. Sci. Vol. (12), pp.109-115. (2009).   

[19] Munir, A.T., A. Rahman and M. Tawaha. “Impact of seeding rate, seeding date, rate and method of phosphorus application in faba bean (Vicia faba L.) in the absence of moisture stress , Biotechnol. Agron. Soc. Environ. Vol. (6), No.3, pp.171-178. (2002).

[20] Tanveer, S.K., Hussain, I., Kissana, N.S., Abbas, S.G. and Sohail, M. “Influence of various planting methods on yield components and economic yield of wheat ”. Asian J. Plant Sci. Vol. (2), pp.811-813. (2003).

[21] Shahazad, M.A., Din, W.U., Sahi, S.T., Khan, M.M., Ehsanullah and Ahmad, M., “Influence of planting times, grain treatment on economic yield and feature of wheat ”, Pak, J. Agri. Sci. Vol. (44), No.4, pp.581-583. (2007).

[22] Iqbal, M.S., Yar, A., Akram, H.M., Ali, A., Iqbal, J. and Anser, M.R. “Plant density and date of sowing influence on seed yield of wheat ”, Agric. Res. Vol. (39), No.3-4, pp.217-220. (2001).

[23] El-Shami, M.E.M., Abdel-Karim, A.A., Hanna, N.S., Towfelis, M.B., Tammam, A.M., Gedan, M.K., AbdelAleem, M.M., Menshawy, A.M. and Ashoush, H.A., Gemmiza 9: a new Egyptian high yielding and rust resistant bread wheat cultivar for Delta region ”, J. Agric. Sci. Mansoura Univ. Vol. (25), No.12, pp.7407-7419. (2000).

[24] Hefnawy, F.A., Wahaba, M.F., “Effect of water stress in late growth stage of some wheat cultivar ”, J. Agric. Sci. Mansoura Univ. Vol. (28), No.2, pp.729-745. (2003).

[25] El-Gizway, N.K.B., “Yield and nitrogen efficiency as influenced by rates and sources of nitrogen fertilizers of some wheat varieties ”, In: The 11th conference of Agronomy, Agron. Dept., Fac. Agric., Assiut Univ. November 15-16. (2005).

[26] Al-Rawi and Khalfalah. “Design and Analysis of Agricultural Experiments ”, College of Agriculture and Forestry, Mosul University. (in Arabic). pp.361-363. (1980).   

[27] Egliq, D.B. “Seed biology and yield of grain crops”, CAB International, ISBN:0851992412, PP.154-171. (1998).

 [28] Dokuyucu, T., Akkaya, A., and Yikitoglu, D., “The effect of different sowing dates on  growing periods, yield and yield components of some bread wheat (Triticum aestivum L.) cultivars grown in the East Mediterranean region of Turkey ”, Journal of Agronomy, Vol. (3), No.2, pp.126-130. (2004).

[29] Tanveer. S.K., Hussain, L., Asif, M., Mujahid, M.Y., Muhammad, S., Qmar, M., and Asim, M., The  Performance of different wheat cultivar/ line as affected by different planting dates and seeding rates under high rainfall after of potohar ”, Pakistan journal of Agriculture Science, Vol. (46), No.2, pp.102-106. (2009).

[30] DSSAT.net, “About DSSAT: the decision support system for Agrotechnology transfer”, <http://www.dssat.net>.  (2011).

[31] Li, Y. Cui, Z., Ni, Y., Zheng, M., Yang, D., Jin, M., Chen, J., Wang, Z., and Yin, Y. “Plant density effect on grain number and weight of two winter wheat cultivars at different spikelet and grain positions ”, Plos one. Journal. Pone. Vol. (11), No.5. (2016).

[32] Hiltbrunner, J., Streit, B., Liedgens, M. “Are seeding densities an opportunity to increase grain yield of winter wheat in a living mulch of white clover? ”, Field Crop Res. Vol. (102), No.3, pp.163-171. (2007).

[33] Grassini, P., Thorbun, J., Burr, C. and Cassman, K.G. High- yield irrigated Maize in the Western US Corn Belt:1. On the farm, yield potential, and impact of agronomic practices ”, Field Crop Res. Vol. (120), No.1, pp.133-141. (2011).

[34] Lioveras, J., Manent, J., Viudas, J., Lopez, A., Santiveri, P. “Seeding rates influence on yield and yield components of irrigated winter wheat in a Mediterranean climate”, Agron. J.  Vol. (96), No.5, pp.1258-1265. (2004).

[35] Luo, L.P., Yu, Z.u., Wang, D., Zhang, Y.L., Shi, Y. “Effect of plant density and soil moisture on photosynthetic characteristics of flag leaf and accumulation and distribution of dry matter in wheat ”, Acta Agron Sin. Vol. (37), No.6, pp.1049-1059. (2011).

[36] Dornbusch, T., Baccar, R., Watt, J., Hillier, J., Bertheloot, J, Fournier,. C. “Plasticity of winter wheat modulated by sowing date, plant population density and nitrogen fertilization: dimensions and size of leaf blades, sheathes and inter nodes in relation to their position on a stem ”, Field Crop Res. Vol. (121), No.1, pp.116-124. (2011).

  [37] Yu, S.M., S.F. Lo and T.H.D. Ho.“Source–sink communication: regulated by hormone, nutrient, and stress cross-signaling ”,  Trends in plant science, Vol. (20), No.12, pp.844-857. (2015).

   [38] Singh, G. and N.K.S. Kaur, “The relative importance of flag leaf blade of grain filling in wheat genotypes ”, Agril. Sci. Digest., Vol. (10), No.2, pp.105-109. (1990).

[39] Xiaojuan, Li., H. Wang, H. LI, L. Zhang, N. Ten, Q. Lin , J. Wang, T. Kuang, Zh. LI, B. LI, A. Zhang and J. Lin. Awns play a dominant role in carbohydrate production during the grain-filling stages in wheat (Triticum aestivum L.) ”, Physiology planitarium, Vol. (127), No.4, pp.701-709. (2006).

   [40] Hanson B. “Planting rate influence on yield and agronomic traits of hard red spring wheat in   northeastern North Dakota Langdon ”, Res. Ext. Center NDSU Agric. Report I. (2001)

    [41] Habibullah, A., Nazir, H. Nazeer, A. Rehman and I. Faqi. “Response of row spacing and seed rate on yield and yield components of wheat ”. Pak.J .PI. Sci.Vol. (13), No.2, pp.143-146. (2007).

[42] Mahbood, A., Arian,  A.M., Khanzada, S., H. Mazher, Naqive, M. Umer and A.N. Nisar. “Yield and   quality parameters of wheat genotypes as affected by sowing dates and hight temperature stress ”, Pak. J. Bot. Vol. (37), No.3, pp.575-584. (2005).

  [43] Singh, S. and M. Pal. “Growth, yield and phonological response of wheat cultivars to delayed sowing ”, Ind. J. of  PP. Phys. Vol. (8), No.3, pp.277-286. (2003).

  [44] Subhan, F., M. Khan and G.H. Jamro. “Effect of different planting date, seeding rate and weed control method on grain yield and yield components in wheat ”, Sarhad J. of Agri. Vol. (20), No.1, pp.51- 55. (2004).

 [45] Singh, D. and D Singh. “Effect of leaf- blade and awn on grain yield of rainfed wheat (Triticum aestivum L.) at different stage of spike development ”, Indian journal of agricultural Sciences, Vol. (62), No.7, pp.468-471. (1992).  

   [46] Zeidan. M.S., Amany, A. and El- Krmany, M.F. “Effect of N- Fertilizer and plant density on yield and quality of maize in sandy soil ”, Res J. of Agric. And Biol. Sci. Vol. (2), No.4, pp.156-161. (2006).  

  [47] Abid, M., K. Alam, A. Salam, and Sh. Iqbal.  Effect of flag leaf removal on grain yield, its components and quality of hexaploid wheat ”, Vol. (19). No.3. (1991).

  [48] Amanullah, Z., K. Ahmad and D. Jan. Performance of wheat cultivars sown at different seeding rate under drought stress condition ”, Archives of Agronomy and soil Sci. Vol. (56), pp.99-105. (2008). 

  [49] Melahat, A. B. Effect of removal of some photosynthetic structures of some yield components in wheat ”, Tarim Bilimleri Dergisi, Vol. (11), No.4, pp. 364-367. (2005).