Genotypic variation in pre- and post-anthesis dry matter remobilization in Iranian wheat cultivars: associations with stem characters and grain yield
The amount of carbohydrate accumulation and remobilization in the wheat stem can be estimated by monitoring changes in stem dry matter. Eighty-one wheat cultivars were examined in the Moghan region of Iran during the 2010–2011 and 2013–2014 growing seasons. Pre- and post-anthesis dry matter remobilization was quantified in the tested cultivars and their associations with stem characteristics and grain yield were investigated. There was substantial variation in stem length, weight, and specific weight among the tested cultivars. The majority of the cultivars did not show pre-anthesis dry matter remobilization in the stem or internodes. In contrast, most of them used stem dry matter that had been stored after anthesis, suggesting that under the given conditions, current photosynthesis along with post-anthesis dry matter remobilization could meet most of the sink demand. Generally, there were no significant associations between stem length and dry matter remobilization (r = –0.05 to 0.03; P ≥ 0.05). Stem weight (r = 0.42 to 0.65; P ≤ 0.01) and specific stem weight (r = 0.44 to 0.60; P ≤ 0.01) measured at 16 days after anthesis correlated positively and significantly with dry weight loss from the stem. Intriguingly, no clear relationships were found between dry matter remobilization and grain yield (r = –0.13 to 0.04; P ≥ 0.05), suggesting that there are no simple relationships between these traits. The association between dry matter remobilization and grain yield may be different depending on the examined cultivars.
Blum A. (1998): Improving wheat grain filling under stress by stem reserve mobilization. Euphytica, 100: 77–83. https://doi.org/10.1023/A:1018303922482
BONNETT G. D., INCOLL L. D. (1992): The Potential Pre-anthesis and Post-anthesis Contributions of Stem Internodes to Grain Yield in Crops of Winter Barley. Annals of Botany, 69, 219-225 https://doi.org/10.1093/oxfordjournals.aob.a088333
Borrell A (): The Influence of the Rht1 and Rht2 Alleles on the Deposition and Use of Stem Reserves in Wheat. Annals of Botany, 71, 317-326 https://doi.org/10.1006/anbo.1993.1041
Cruz-Aguado Jorge A, Rodés Rosa, Pérez Isel P, Dorado Maydelı́n (2000): Morphological characteristics and yield components associated with accumulation and loss of dry mass in the internodes of wheat. Field Crops Research, 66, 129-139 https://doi.org/10.1016/S0378-4290(00)00070-8
Davidson D. J., Chevalier P. M. (1992): Storage and Remobilization of Water-Soluble Carbohydrates in Stems of Spring Wheat. Crop Science, 32, 186- https://doi.org/10.2135/cropsci1992.0011183X003200010038x
Ehdaie B., Shakiba M.R. (1996): Relationship of internode–specific weight and water–soluble carbohydrates in wheat. Cereal Research Communications, 24: 61–67.
Ehdaie B., Waines J.G. (1996): Genetic variation for contribution of preanthesis assimilates to grain yield in spring wheat. Journal of Genetic and Breeding, 50: 47–56.
Ehdaie B., Alloush G. A., Madore M. A., Waines J. G. (2006): Genotypic Variation for Stem Reserves and Mobilization in Wheat. Crop Science, 46, 735- https://doi.org/10.2135/cropsci2005.04-0033
Flood RG, Martin PJ, Gardner WK (1995): Dry matter accumulation and partitioning and its relationship to grain yield in wheat. Australian Journal of Experimental Agriculture, 35, 495- https://doi.org/10.1071/EA9950495
Inoue T., Inanaga S., Sugimoto Y., El Siddig K. (2004): Contribution of Pre-Anthesis Assimilates and Current Photosynthesis to Grain Yield, and their Relationships to Drought Resistance in Wheat Cultivars Grown Under Different Soil Moisture. Photosynthetica, 42, 99-104 https://doi.org/10.1023/B:PHOT.0000040576.52128.ed
Joudi Mehdi, Ahmadi Ali, Mohamadi Valiollah, Abbasi Alireza, Vergauwen Rudy, Mohammadi Hamid, Van den Ende Wim (2012): Comparison of fructan dynamics in two wheat cultivars with different capacities of accumulation and remobilization under drought stress. Physiologia Plantarum, 144, 1-12 https://doi.org/10.1111/j.1399-3054.2011.01517.x
Joudi Mehdi, Ahmadi Ali, Mohammadi Valiollah, Abbasi Alireza, Mohammadi Hamid (2014): Genetic changes in agronomic and phenologic traits of Iranian wheat cultivars grown in different environmental conditions. Euphytica, 196, 237-249 https://doi.org/10.1007/s10681-013-1027-7
LATIRI K., LHOMME J. P., LAWLOR D. W. (2013): GRAIN FILLING OF DURUM WHEAT THROUGH ASSIMILATE REMOBILISATION UNDER SEMI-ARID CONDITIONS. Experimental Agriculture, 49, 197-211 https://doi.org/10.1017/S0014479712001238
Ludwig Fulco, Asseng Senthold (2010): Potential benefits of early vigor and changes in phenology in wheat to adapt to warmer and drier climates. Agricultural Systems, 103, 127-136 https://doi.org/10.1016/j.agsy.2009.11.001
Ma J., Huang G.B., Yang D.L., Chai Q. (2014): Dry matter remobilization and compensatory effects in various internodes of spring wheat under water stress. Crop Science, 53: 1–9.
Nakashima Kazuo, Yamaguchi-Shinozaki Kazuko (2006): Regulons involved in osmotic stress-responsive and cold stress-responsive gene expression in plants. Physiologia Plantarum, 126, 62-71 https://doi.org/10.1111/j.1399-3054.2005.00592.x
Pheloung PC, Siddique KHM (1991): Contribution of Stem Dry Matter to Grain Yield in Wheat Cultivars. Australian Journal of Plant Physiology, 18, 53- https://doi.org/10.1071/PP9910053
Saint Pierre Carolina, Trethowan Richard, Reynolds Matthew (2010): Stem solidness and its relationship to water-soluble carbohydrates: association with wheat yield under water deficit. Functional Plant Biology, 37, 166- https://doi.org/10.1071/FP09174
SCHNYDER HANS (1993): The role of carbohydrate storage and redistribution in the source-sink relations of wheat and barley during grain filling - a review. New Phytologist, 123, 233-245 https://doi.org/10.1111/j.1469-8137.1993.tb03731.x
Scofield Graham N., Ruuska Sari A., Aoki Naohiro, Lewis David C., Tabe Linda M., Jenkins Colin L. D. (2009): Starch storage in the stems of wheat plants: localization and temporal changes. Annals of Botany, 103, 859-868 https://doi.org/10.1093/aob/mcp010
Užík M., Žofajová A. (2006): Translocation and accumulation of dry matter in winter wheat genotypes. Cereal Research Communications, 34, 1013-1020 https://doi.org/10.1556/CRC.34.2006.2-3.232
Zhang Jingjuan, Xu Yunji, Chen Wei, Dell Bernard, Vergauwen Rudy, Biddulph Ben, Khan Nusrat, Luo Hao, Appels Rudi, Van den Ende Wim (2015): A wheat 1-FEH w3
variant underlies enzyme activity for stem WSC remobilization to grain under drought. New Phytologist, 205, 293-305 https://doi.org/10.1111/nph.13030
Zhang Y.P., Zhang Y.H., Xue Q.W., Wang Z.M. (2013): Remobilization of water soluble carbohydrates in non–leaf organs and contribution to grain yield in winter wheat under reduced irrigation. International Journal of Plant Production, 7: 97–116.