Potential productivity realization of common winter wheat plants under drought
Abstract
Aim. The goal of this work was to study the effect of soil drought on the reproductive ability of common winter wheat plants (Triticum aestivum L.). Methods. Wheat plants of cultivars Kujalnik and Ladijinka were grown under optimal nutrition and well-water conditions to the earing-flowering phase, after that the experimental plants were transferred to drought regime for 8 days, after that the optimal water supply was restored to the end of vegetation. During the experiment, the stem and ear length were measured. Ripened plants were analyzed according to the structure of the yield. Results. It is established that the effect of drought in the critical phase of ontogenesis the earing-flowering led to the decreasing the stem and ear length, the mass of the ear and grains, number of grains on plant. Conclusions. Water deficit in the soil in the critical phase of earing-flowering led to a decrease in the productive of winter wheat plants due to the inhibition of growth of stem and ear, decreasing grain number and the mass of ear and grains.
Keywords: Triticum aestivum L, stem, ear, productivity, drought.
References
Barnabas B., Jager K., Feher A. The effect of drought and heat stress on reproductive processes in cereals. Plant. Cell Environ. 2008. Vol. 31. P. 11–38. doi: 10.1111/j.1365-3040.2007.01727.x.
Weng X., Wang L., Hu J., Du H., Xu C., Xing Y. Xiao J., Zhang Q. Grain number, plant height and heading date 7 is a central regulator of growth, development and stress response. Plant Physiol. 2014. Vol. 164. P. 735–747. doi: 10.1104/pp.113.231308.
Bancal P. Early development and enlargement of wheat floret primordial suggest a role of partitioning within spike to grain set. Field Crops Res. 2009. Vol. 110. P. 44–53. doi: 10.1016/j.fcr.2008.06.014.
Zhuk O.I. Adaptive evolution of plant water regime and drought tolerance of plants. Factors in experimental evolution of organisms. 2010. Vol. 8. P. 12–16. [in Russian]
Zhuk O.I. Plant adaptation evolution under biotic and abiotic conditions. Faktori eksperimental'noi evolucii organizmiv. 2011. Vol. 11. P. 24–29. [in Russian]
Jaleel, C.A.P. Wahid A., Farooq M., Somasundaram R., Panneerselvam R. Drought stress in plants: a review on morpho-logical characteristics and pigment composition. Int. J. Agric. Biol. 2009. Vol. 11. P. 100–105.
Zhuk O.I. Water transport in plants. The Journal of V.N. Karazin Kharkiv. Series: biology. 2010. Vol. 11, No. 905. P. 212–217. [in Ukrainian]
Zhuk O.I. Formation of plant adaptive response on water deficit. Physiology and biochemistry of cultivated plants. 2011. Vol. 43, No. 1. P. 26–37. [in Russian]
Zhuk O.I., Grygorjuk I.P., Grodzinsky D.M. Cell plant growth under water stress. Physiology and biochemistry of cultivated plants. 1999. Vol. 31, No. 2. P. 83–93. [in Ukrainian]
Zhuk O.I. The apical dominance in winter wheat. Faktori eksperimental'noi evolucii organizmiv . 2017. Vol. 21. P. 133–137. [in Ukrainian] doi: 10.7124/FEEO.v21.822
Zhuk O.I. Productivity of winter wheat plants under drought. Faktori eksperimental'noi evolucii organizmiv. 2018. Vol. 23. P. 63–67. [in Ukrainian] doi: 10.7124/FEEO.v23.991
Zhuk O.I. Reproductive ability of common winter wheat plants under drought. Faktori eksperimental'noi evolucii organizmiv. 2019. Vol. 24. P. 86–91. [in Ukrainian] doi: 10.7124/FEEO.v24.1084
