Identifying the most important traits affecting grain yield of wild wheat (Triticum boeoticum) under drought stress conditions

Document Type : Research Paper

Authors

1 Department of Agronomy and Plant Breeding, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran

2 Department of Agronomy and Plant Breeding, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran.

3 Department of Molecular Plant Biotechnology, Faculty of Agricultural Biotechnology , National Institute of Genetic Engineering and Biotechnology, Tehran, Iran

4 Department of Biotechnology, Institute of Science and High Technology and Environmental Science, Graduate University of Advanced Technology, Kerman, Iran

Abstract

Boeoticum specie is a valuable drought-tolerance gene source to breed wheat yield under stress. This study was done to identify the most important traits affecting grain yield of 10 boeoticum ecotypes under drought stress conditions for two years. Water use efficiency, fertile spikes number per plant and seed number per plant showed the highest positive and significant (p≤0.01) correlation with grain yield per plant. Water use efficiency, fertile spikes number per plant, seed number per the main spike, biological yield per plant, and water use (with a negative regression coefficient), as the most important traits, were entered into the regression model, respectively. The most direct effect on increasing grain yield was water use efficiency. Seed number per plant and fertile spikes number per plant, due to increased water use efficiency, showed the most indirect effect on grain yield.  Ecotype 5, as a drought-tolerant ecotype, showed a high water use efficiency by allocating more assimilates to yield components. It had a high grain yield. On the other hand, ecotype 6 was introduced as the most drought-susceptible ecotype with low-economical yield. In this study, high water use efficiency increased the traits related to seed number per plant. The ratio of assimilating allocation to aboveground or under-ground parts was the main mechanism for the adaptation of ecotypes. Therefore, selection based on these mechanisms will lead to the identification of drought-tolerant ecotypes for future wheat breeding programs.

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References 
 
Akpinar, B.A., S.J. Lucas, H.Budak, 2013. Genomics approaches for crop improvement against abiotic       stress. Science World Journal, 361921;1-9. doi: 10.1155/2013/361921. Ali, I., E. Shakor, 2012. Heritability, variability, genetic correlation, and path analysis for quantitative       traits in durum and bread wheat under dry farming conditions. Mesoptamia Journal of Agriculture,       40: 27-39.  Blum, A., 2011. Plant breeding for water-limited environments. Springer, New York. Budak, H., M. Kantar, K.Y.Kurtoglu, 2013. Drought tolerance in modern and wild wheat. Scientific       World Journal 548246;1-16. doi: 10.1155/2013/548246. Dawari, N.H., O.P. Luthra, 1991. Character association studies under high and low environments in       wheat (Triticum aestivum L.). Indian Journal of Agricultural Research, 25; 68-72. Dencic, S., R. Kastori, B. Kobiljski, B. Duggan, 2000. Evaluation of grains yield and its components in       wheat cultivars and landraces under near-optimal and drought conditions. Euphytica, 113; 43-52. Dewey, D.R., K.H. Lu, 1959. A correlation and path coefficient in wheat, character association studies       under high and low environments analysis of components of crested wheatgrass and production.       Agronomy Journal, 51; 515-518. Harb, S., M. Khodarahmiand, B.Sorkhi, 2012. Evaluation of genetic diversity for morphological and       phenological traits in Iranian landrace wheat. Proceeding of 12th Iranian Genetics Congress. Tehran,            Iran. Khaleghi, A., K. Arzani, N. Moalemi, M. Barzegar, 2014. Study of the use application of Kaolin leaves       on fluorescence and permitted chlorophyll of olive grainling (Olea europea L.) Dezfol cultivar under      drought stress. Plant production, 37 (2); 127-139. Leilah, A.A., S. Al-Khateeb, 2005. Statistical analysis of wheat yield under drought conditions. Journal       of   Arid Environments, 61; 483-496. Liu, JX., DQ. Liao, R. Oane, L. Estenor, XE. Yang, ZC. Li, J. Bennett, 2006. Genetic variation in the       sensitivity of anther dehiscence to drought stress in rice. Field Crops Research, 97; 87-100. Lopez, G., B. Pallas, S. Martinez, PE. Lauri, JL. Regnard, CE. Durel, E. Costes, 2017. Heritability and       genetic variation of plant biomass, transpiration, and water use efficiency for an apple core collection.       Acta Horticulture, 1172; 317-322. Mansourfar, K. 2013. Statistical advanced methods. Tehran University Press. 460 pp. Mguis, Kh., A. Albouchi, M. Abassi, A. Khadhri, M. Ykoubi-Tej, A. Mahjoub, N. Ben Brahim, Z.       Ouerghi, 2013. Responses of leaf growth and gas exchanges to salt stress during the reproductive  
 352                                                                                                                        DESERT, 27-2, 2022 
 
     stage in wild wheat relative to Aegilops geniculata roth and wheat (Triticum durum Desf.). Acta      Physiologiae     Plantarum, 35; 1453-1461. Moghaddam, M., M.A. Mazinani, S.S. Alavinia, M.R. Shakiba, A.A. Mehrabi, A.R.       Pouraboughaddareh, 2012. Study of genetic diversity in T. boeoticum populations under normal and       water-deficit stress conditions. Journal of Cereal Research, 2(1); 17-30. Mohammadi, S. 2014. Relationship between grains yield and its components in wheat cultivars under       full irrigation conditions and end-of-season moisture stress using multivariate statistical methods.       Iranian Journal of Field Crops Research, 12(1); 99-109. Mojtabaie-Zamani, M., M. Nabipour, M. Meskarbashi, 2014. Investigation of reaction of bread wheat       genotypes to heat stress during grains filling period in Ahvaz condition. Plant Productions, 37(4);       119-130.  Moll, R.H., E.J. Kamparth, 1977. Effect of population density up on agronomic traits associated with       genetic increases in yield of Zea mays L. Agronomy Journal, 69; 81-84 Moosavi, S.S., F. Abdi, M.R. Abdollahi, S. Thmasebi Enferadi, M. Maleki, 2020. Phenological,       morpho-physiological, and proteomic responses of Triticum boeoticum to drought stress. Plant       Physiology and Biochemistry, 156; 95-104. Moosavi, S.S., F. Kianersi, M.R. Abdollahi 2013. Application of multivariate statistical methods in the       detection of effective traits on bread wheat (Triticum aestivum L.) yield under moisture stress       conditions. Cereal Researches, 3(2); 119-130.  Moosavi, S.S., F. Kianersi, M.R. Abdollahi, D. Afioni, 2016.  Evaluation of grain yield of bread wheat       promising lines and identification of agro-morphological traits associated with yield under terminal       moisture stress conditions. Journal of Crop Production and Processing 18; 91-103.  Moosavi, S.S., M. Nazari, M. Maleki, 2017. Responses of above and below-ground traits of wheat wild       relative (Aegilops tauschii) and bread wheat (Triticum aestivum L.) to imposed moisture stress.       Desert, 22(2); 209-220. Munns, R.R., A. James, Xu Athman, B.A. Conn, S.J.C. Jordans, 2012. Wheat grains yield on saline soils       is improved by an ancestral Na+ transporter gene. Nature Biotechnology, 30; 360-173. Naderi, A., M.R. Eslahi, 2019. Evaluation of susceptibility of some phonological stages of wheat       genotypes in response to drought stress. Plant productions 42(1); 133- 148. Naghavi, M.R., R. Amirian, 2005. Morphological characterization of accessions of Aegilops tauschii.           International Journal of Agriculture and Biology, 7; 392-394. Nazari, M., K. Goharrizi, S.S. Moosavi, M. Maleki 2019. Expression changes in the TaNAC2 and       TaNAC69-1 transcription factors in drought stress-tolerant and susceptible accessions of Triticum       boeoticum. Plant Genetic Resources; Characterization and Utilization, 17(6); 471-479. doi;            10.1017/S1479262119000303. Nazari, M., S.S. Moosavi, M. Maleki, 2018. Morpho-physiological and proteomic responses of Aegilops       tauschii to imposed moisture stress. Plant Physiology and Biochemistry, 132; 445-452. Passioura, J.B., 1996. Drought and drought tolerance. Plant Growth Regulation, 20; 79-83. Pour-Aboughadareh A.A., S.S. Alavikia, M. Moghaddam, A.A. Mehrabi, M.A. Mazinani, 2016.       Diversity of agro-morphological traits in populations of einkorn wheat (Triticum boeoticum and       Triticum urartu)     under normal and water-deficit stress conditions. Journal of Crop Breeding, 8;       37-46.  Saba, J., Sh. Tavana, Z. Qorbanian, E. Shadan, F. Shekari, F. Jabbari, 2018. Canonical correlation       analysis to determine the best traits for indirect improvement of wheat grains yield under terminal       drought stress. Journal of Agricultural Science and Technology, 20; 1037-1048. Sayyah, S.S., M. Ghobadi, S. Mansoorifar, R. Zebarjadi, 2010. Studying terminal drought stress effect       on grains yield, yield components, and some morpho-physiological traits in irrigated wheat       genotypes.   M.Sc. Thesis, Kermanshah Razi University, Kermanshah, Iran. Solomon, K.F., M.T.Labuschagne, 2004. Inheritance of evapotranspiration and transpiration       efficiencies in diallel F hybrids of durum wheat (Triticum turgidum L. var. durum). Euphytica, 136;       69-79. Vafabakhsh, J., M. Nassiri Mahallati, A. Koocheki, M. Azizi, 2009. Effects of water deficit on water       use efficiency and yield of Canola cultivars (Brassica napus L.). Iranian Journal of Field Crops       Research, 7(1); 280- 292.