Assess Using Paclobutrazol in Reducing Negative Effects of Late Sowing of Wheat (Triticum aestivum L.) Cultivars
الموضوعات :Neda Bakhtiyarinejad 1 , Mehran Mombeini 2 , Abdollah Bahrani 3 , Mahroo Mojtabaie Zamani 4
1 - PhD. Student of Agrotechnology, Department of Agriculture, Ramhormoz Branch, Islamic Azad Uni-versity, Ramhormoz, Iran.
2 - Assistant Professor, Department of Agriculture, Ramhormoz Branch, Islamic Azad University, Ramhormoz, Iran.
3 - Assistant Professor, Department of Agriculture, Ramhormoz Branch, Islamic Azad University, Ramhormoz, Iran.
4 - Assistant Professor, Department of Agriculture, Ramhormoz Branch, Islamic Azad University, Ramhormoz, Iran.
الکلمات المفتاحية: Planting date, leaf area, Growth Regulator, Seed yield</i>, <i>Grain filling,
ملخص المقالة :
BACKGROUND: The use of plant growth regulators is a agronomic strategy that researchers are interested in to compensate or moderate the negative effect of environmental stress. One of the most important physiological effects of these factors is increasing the tolerance of plants to environmental stresses.OBJECTIVES: This research was conducted with the aim of investigating the effect of delay in planting on leaf area index and seed growth process and yield formation of three wheat cultivars and how these cultivars respond to paclobutrazol consumption.METHODS: Current research was done in two cropping years 2020-21 and 2021-22 in a farm located in Izeh city, in the northeast of Khuzestan province. It was implemented as a split factorial in the form of randomized complete block design (RCBD) with three replications. The main factor included planting date (November 16, December 11, and January 5) and the secondary factor factorially included bread wheat cultivars (Karim, Mehregan, and Chamran 2) and the use of paclobutrazol (0, 60, 120 mg.lit-1).RESULT: The results showed that with the application of paclobutrazol, the length of the filling period and seed yield increased significantly. The leaf area index increased up to the application of 60 mg.lit-1, but the seed filling rate was not affected by the application of paclobutrazol. The highest seed filling period was observed on the sowing date of November 16 (21 days) and the lowest on the sowing date of January 5 (19 days). With delay in planting, the duration of seed filling period decreased. On the planting dates of November 16 and December 11, the use of 60 mg.lit-1 of paclobutrazol and on the delayed planting date of January 5, the use of 120 mg.lit-1 of paclobutrazol led to an increase in seed yield compared to the conditions of not using paclobutrazol. The effect of using paclobutrazol on seed yield is positive, and by increasing the use of paclobutrazol (120 mg.lit-1), it moderates the negative effects caused by the delay in planting.CONCLUSION: With the application of 60 mg.lit-1 of paclobutrazol, the seed yield of Chamran 2 cultivar was higher on the two planting dates of November 16 (6940.85 kg.ha-1) and December 11 (6779.47 kg.ha-1) compared to other treatment levels.
Andarzian, B., G. Hoogenboom, M. Bannayan. and M. Shirali. 2015. Determining optimum sowing date of wheat using CSM-CERES-Wheat model. J. Saudi Soc. Agri. Sci. 14: 189-199.
Awan, K. A., J. Ali. and M. Akmal. 2017. Yield comparison of potential Wheat varieties by delay sowing as rainfed crop for peshawar climate. Sarhad J. Agri. 33(3): 480-488.
Baygi, Z., S. Seifzadeh, A. H. Shirani Rad, S. A. valadabadi. and A. Jafarinejad. 2018. Seed yield and yield components of some spring wheat varieties affected by different dates in Neishabour. J. Crop Ecophysiol. 11(4): 905-920.
Bijand, A., M. Kafi. and H. R. Sharifi. 2017. Management of developmental stages of six wheat varieties by changing planting dates and nitrogen fertilizer levels in the rokh cold plain of Khorasan Razavi. Cereal Res. 6(4): 477-488.
Darzi Ramandi, H., H. Najafi Zarini, V. Shariati, K. Razavi. and S. K. Kazemitabar. 2018. Evaluation of the relationship between kernel size, phenological characteristics and seed yield of local Wheat genotypes under water deficit stress conditions. J. Crop Breed. 10(26): 76-94.
Desta, B. and G. Amare. 2021. Paclobutrazol as a plant growth regulator. Chemical and Biological Technologies in Aagriculture. 8(1):1-15.
DOI: 10.1186/s40538- 020- 00199-z.
Egli, Dennis. B. 2001. Seed biology and yield of seed crops. University of Kentucky.
FAO. 2021. FAOSTAT Database. http://faostat.fao.org.
Ghatei, A ., A. Bakhshandeh, A .Abdali Mashhadi, S. A. Siadat, K. Alami Saeid. and M. H. Gharineh. 2017. Effect of nitrogen fertilizer and cytokinin application on seed yield and physiological traits of wheat (Triticum aestivum L. cv. Chamran) under terminal heat stress condition. Iranian J. Agri. Sci. 4(18): 273-287.
Hosseinzadeh Bandbafha, H., D. Safarzadeh, E. Ahmadi. and A. Nabavi Pelesaraei. 2018. Optimization of energy consumption of dairy Farms using data envelopment analysis. A case study: Qazvin city of Iran. J. Saudi Soc. Agri. Sci. 17(3): 217-228.
Liu, J., H. Qijin, G. Zhou, Y. Song,Y. Guan, X. Xiao, W, Sun, Y. Shi, K. Zhou, S. Zhou,Y. Wu, S. Ma. and R. Wang. 2023. Effects of sowing date variation on winter Wheat yield: Conclusions for suitable sowing dates for high and stable yield. Agronomy. 13(4)991: 1-13.
Jalili Honarmand, M. and M. A. Aboutalebian. 2020. Effect of phosphate fertilizer type and nitrogen application method on tuber yield and growth indices of three Potato (Solanum tuberosum L.) cultivars. J. Crop Ecophysiol. 2(54): 237-256.
Khan, N. A., S. Khan, N. Naz, M. Shah, S. Ahmad, H. Sher. and A. Khan. 2017. Effect of heat stress on growth, physiological and biochemical activities of wheat (Triticum aestivum L). Intl. J. BioSci. 11(4): 173-183.
Mi, N., Cai, F. Y. Zhang, R. Ji, S. Zhang. and Y. Wang. 2018. Differential responses of maize yield to drought at vegetative and reproductive stages. Plant, Soil and Environment. 64: 260-267.
Mojtabaie Zamani, M., M. Nabipour. and M. Mesgarbashee. 2014. Evaluation of stem soluble carbohydrate accumulation and remobilization in spring bread wheat genotypes under terminal heat stress conditions in Ahwaz in Iran. J. Agri. Sci. Iran. 15(3): 277-294.
Mojtabaie Zamani, M., M. Nabipour. and M. Mesgarbashee. 2015. Responses of bread wheat genotypes to heat stress during seed filling period under Ahvaz conditions. Plant Prod. 37(4): 119-130.
Moshattati, A., S. A. Siadat, A. M. Bakhshandeh. and M. R. Jalal-Kamali. 2018. The effect of growth and development periods on seed yield of spring bread wheat under terminal heat stress in Ahwaz. Environmental Stresses in Crop Sciences. 11(1): 197-209.
DOI: 10.22077/ESCS.2017.355.1067.
Musavi, S. F., M. R. Siahpoosh. and K .Sorkheh. 2021. Influence of sowing date and terminal heat stress on phenological features and yield components of bread wheat genotypes. J. Plant Prod. 44(2): 157-170. 10.22055/PPD.2019.28957.1744.
Nouriyani, H. 2014. The effect of paclobutrazol on the redistribution of photosynthetic materials to the seed of three wheat cultivars (Triticum aestivum L.) in heat stress conditions. Sci. Res. Quarterly J. Plant Physiol. 7(25): 76-94.
Nouriyani, H. 2017. Effect of paclobutrazol levels on seed growth process and yield of three cultivars of wheat (Triticum aestivum L.) under post-anthesis heat stress conditions. Environmental Stresses in Crop Sci. 9(4): 407-415.
http://dx.doi.org/10.22077/escs.2017.468.
Omidi, M., M. R. Siahpoosh, R. Mamghani. and M. Modarresi. 2014. The effects of terminal heat stress on yield, yield components and some morpho-phenological traits of wheat genotypes in Ahwaz weather conditions. Crop Prod. J. 6(4): 33-53.
Peake, A. S., K. L. Bell, R. A. Fischer, M. Gardner, B. T. Das, N. Poole. and M. Mumford. 2020. Cultivar-management interaction to reduce lodging and improve seed yield of irrigated spring wheat: Optimising plant growth regulator use, N application timing, row spacing and sowing date. Frontiers in Plant Sci. 11(401): 1-16.
Pradhan, G. P., P. V. V. Prasad, A. K. Fritz, M. B. Kirkham. and B. S. Gill. 2012. High yemperature tolerance in Aegilops species and its potential transfer to Wheat. Crop Sci. 52(1): 292-304.
Radmehr, M., G. A. Lotf Ali Ayane. and R. Mamaghani. 2014. Investigating the reactions of late, medium and early bread wheat genotypes with respect to different planting dates 1- The effect of planting date on the phenological, morphological and yield characteristics of four bread wheat genotypes. Seedlings and seeds. 21(2): 175-189. Available from: https:/./sid.ir/paper/20289/fa.
Reynolds, M., J. Foulkes, R. Furbank, S. Griffiths, J. King, E. Murchie, M. Parry. and G. Slafer. 2012. Achieving yield gains in wheat. Plant, Cell and Environment, 35(10): 1799-1823.
Sara, R. T., G. M. Deborah. and M. C. Bert. 2015. Effects of paclobutrazol and fertilizer on the physiology, growth and biomass allocation of three fraxinus species. Urban Forestry and Urban Greening. 14: 590-598.
Shirinzadeh, A., H. G .Heidari Sharif Abad, Gh. Nourmohammadi, E. Majidi Haravan. and H. Madani. 2017. Effect of planting date on growth periods, yield, and yield components of some bread wheat cultivars in Parsabad Moghan. International Journal of Farming and Allied Sciences. Intl. J. Farm Alli Sci. 6(4): 109-119.
Souqi, H., M. Khoudarahmi, S. Bagheri kia, and M. Nazari. 2020. Response of seed yield of new bread Wheat (Triticum aestivum L.) cultivars to sowing date based on agro-climatic indices under Gorgan environmental conditions. Seed and Plant. 36(1): 1-31.
Yeshitela, T., P. J. Robbertse. and P. J. C. Stassen. 2004. Paclobutrazol suppressed vegetative growth and improved yield as well as fruit quality of ‘Tommy Atkins’ mango (Mangifera indica) in Ethiopia. New Zealand J. Crop and Horticultural Sci. 32: 281-293.
