Dry matter remobilization and associated traits, grain yield stability, N utilization, and grain protein concentration in wheat cultivars under supplemental irrigation

Moradi, L Ali; Siosemardeh, Adel; Sohrabi, Yousef; Bahramnejad, Bahman; Hosseinpanahi, Farzad

doi:10.1016/j.agwat.2021.107449

Cited by 22 publications

(23 citation statements)

References 32 publications

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“…The productivity of cultivated land is a huge and complex system, with specific functions, that has developed under the long‐term influence of natural, ecological, and social‐economic factors. The main determinants of grain yield are irrigation (Moradi et al, 2022), cultivated land area (Jiang et al, 2020), fertilizers (Martey et al, 2019), and pesticides (Rahman, 2013). Therefore, these are also the decisive driving factors of CLP.…”

Section: Methodsmentioning

confidence: 99%

Spatial–temporal pattern of cultivated land productivity based on net primary productivity and analysis of influencing factors in the Songhua River basin

et al. 2022

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Inefficient utilization puts the productivity of cultivated land in a low development state. The key challenge for the efficient utilization of cultivated land is to clarify how various factors affect the spatial differentiation pattern of cultivated land productivity (CLP), to improve food production. However, evaluating the impact of the intensity and direction of CLP on a large-scale is a difficulty and there is a gap in knowledge. In this study, we used net primary productivity (NPP) to calculate the productivity of cultivated land and reveal its spatial differentiation. Also, this study examined the spatio-temporal heterogeneity of CLP and determined the effect intensity and the direction of effect of various factors on productivity, using the Songhua River basin (SRB) in China as a research case. We used genetic algorithms to modify and improve a neural network model of factor dimensionality reduction, combined with path analysis, cluster analysis, and regression analysis, to identify the main factors impacting CLP, synergies between these factors, and effect intensity and direction. The results showed that: (1) the area of cultivated land in SRB decreased, but the NPP of cultivated land area increased, during 2000-2020; (2) spatially, NPP was relatively low in the middle of the basin and gradually increased towards the periphery; (3) The main positive factors were the normalized difference vegetation index (NDVI), slope, precipitation, evapotranspiration, and total nitrogen, while the main negative factors were temperature, ratio vegetation index, and total phosphorus. Individual principal factors and the synergy between these factors gave CLP different temporal and spatial heterogeneity. Collaborative management of the threshold range of various influencing factors would improve the CLP. This novel information on

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Section: Methodsmentioning

confidence: 99%

Spatial–temporal pattern of cultivated land productivity based on net primary productivity and analysis of influencing factors in the Songhua River basin

et al. 2022

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“…Studies in the United Kingdom ( Shearman et al, 2005 ), Australia ( Sadras and Lawson, 2011 ), China ( Xiao et al, 2012 ), Brazil ( Beche et al, 2014 ), and northwest Mexico ( Aisawi et al, 2015 ) have shown that grain yield is closely associated with dry matter (DM). In detail, during grain filling, grain accumulates DM from two sources: current assimilates transferred post-anthesis directly to the grain, and pre-anthesis assimilates redistributed from reserve pools stored in vegetative plant parts ( Santiveri et al, 2004 ; Moradi et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Wide belt sowing improves the grain yield of bread wheat by maintaining grain weight at the backdrop of increases in spike number

Zhang

Hua²,

Liu³

et al. 2022

Front. Plant Sci.

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Increasing the seeding belt width from 2 to 3 cm (conventional drilling sowing, CD) to 8–10 cm (wide belt sowing, WB) can markedly improve the grain yield of bread wheat. However, there are insufficient data to explain how WB affects dry matter (DM) remobilization, pre- and post-anthesis production, and ultimately grain weight and grain yield. In the present study, four bread wheat cultivars (Jimai44, Taishan27, Gaoyou5766, and Zhouyuan9369) with similar phenology characteristic were selected as experimental materials and two sowing patterns (CD and WB) were applied during the 2018–2019 and 2019–2020 growing seasons, to investigate the effects of sowing pattern on grain yield and its components of bread wheat. The results showed that WB increased the post-anthesis rate of canopy apparent photosynthesis (CAP) in comparison with CD, by 19.73–133.68%, across the two seasons and four bread wheat cultivars. Furthermore, WB significantly increased the activities of superoxide dismutase, peroxidase, and catalase, and decreased the malondialdehyde content of the flag and penultimate leaf, thereby extending the duration of the high-value CAP period by 1.95–2.51 days. The improved rate and duration of CAP in WB led to an increase in post-anthesis DM production of 13.33–23.58%, thus ensuring DM distribution to the grain of each bread wheat cultivar. Consequently, in WB, the grain weight was maintained, the grain yield was increased markedly by 9.65–15.80%, at the backdrop of increases in spike number and in turn grain number per unit area. In summary, WB could be applied widely to obtain a high yield of bread wheat.

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“…A slight water deficit applied at the jointing stage can inhibit the growth of ineffective tillers and improve the harvest index. It has been widely reported that dry matter remobilization efficiency and the harvest index can been enhanced by drought stress ( Tatar et al., 2020 ; Moradi et al., 2022 ). One benefit of soil drying at the later grain-filling stage is enhancing plant senescence, and thereby promoting a more rapid and efficient remobilization of pre-stored carbon from vegetative tissues to developing grains ( Yang et al., 2000 ).…”

Section: Discussionmentioning

confidence: 99%

“…In turn, an increase in Rn indicates that the nitrogen supplied to the grains is sufficient. The findings of previous studies have revealed that mild water deficits promote N availability and uptake ( Széles et al., 2012 ; Yan et al., 2020 ), whereas irrigation at the anthesis and grain-filling stages has been found to cause reductions in the N harvest index ( Moradi et al., 2022 ). GN is primarily determined by the N stored in the leaves at anthesis ( Zheng et al., 2020 ), and during the grain-filling stage, proteins deposited in the leaves are broken down into free amino acids that are remobilized to the grain via rachis ( Zhao et al., 2015 ; Hecke et al., 2020 ).…”

Section: Discussionmentioning

confidence: 99%

“…However, the relationship between stress intensity and protein concentration is non-linear, with drought stress experienced during the growth period generally promoting an increase in GPC (Barutcular et al, 2016;Rakszegi et al, 2019;Tatar et al, 2020;Kamara et al, 2022). Moreover, there is a negative association between GPC and total irrigation amount (Moradi et al, 2022). Wu et al (2020) also found that the concentration of grain protein was significantly increased by a water deficit during the grain-filling stage.…”

Section: Effects Of Drought Stress On the Enduse Functional Propertie...mentioning

confidence: 99%

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The end-use quality of wheat can be enhanced by optimal water management without incurring yield loss

Sheng

Wang

et al. 2022

Front. Plant Sci.

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In China, water-saving irrigation is playing important roles in ensuring food security, and improving wheat quality. A barrel experiment was conducted with three winter wheat (Triticum aestivum L.) genotypes and two irrigation pattens to examine the effects of regulated deficit irrigation (RDI) on wheat grain yield, water-use efficiency (WUE), and grain quality. In order to accurately control the soil water content, wheat was planted in the iron barrels set under a rainproof shelter, and the soil water content in the iron barrel was controlled by gravity method. The mechanisms whereby water management influences the end-use functional properties of wheat grain were also investigated. The results revealed that RDI improved the end-use functional properties of wheat and WUE, without significant yield loss (less than 3%). Moderate water deficit (60% to 65% field capacity) before jointing and during the late grain-filling stage combined with a slight water deficit (65% to 70% field capacity) from jointing to booting increased grain quality and WUE. The observed non-significant reduction in wheat yield associated with RDI may be attributed to higher rate of photosynthesis during the early stage of grain development and higher rate of transfer of carbohydrates from vegetative organs to grains during the later stage. By triggering an earlier rapid transfer of nitrogen deposited in vegetative organs, RDI enhances grain nitrogen content, which in turn could enhance dough elasticity, given the positive correlation between grain nitrogen content and dough midline peak value. Our results also indicate that the effects of RDI on grain quality are genotype dependent. Therefore, the grain end-use quality of some specific wheat genotypes may be enhanced without incurring yield loss by an optimal water management.

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Dry matter remobilization and associated traits, grain yield stability, N utilization, and grain protein concentration in wheat cultivars under supplemental irrigation

Cited by 22 publications

References 32 publications

Spatial–temporal pattern of cultivated land productivity based on net primary productivity and analysis of influencing factors in the Songhua River basin

Spatial–temporal pattern of cultivated land productivity based on net primary productivity and analysis of influencing factors in the Songhua River basin

Wide belt sowing improves the grain yield of bread wheat by maintaining grain weight at the backdrop of increases in spike number

The end-use quality of wheat can be enhanced by optimal water management without incurring yield loss

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