Effects of Drought Stress on Morphophysiological Traits, Biochemical Characteristics, Yield, and Yield Components in Different Ploidy Wheat

Wang, Jian Yong; Xiong, You‐Cai; Li, Feng Min; Siddique, Kadambot H. M.; Turner, Neil C.

doi:10.1016/bs.agron.2017.01.002

Cited by 68 publications

(51 citation statements)

References 63 publications

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“…where Y is the tuber yield (kg ha −1 ) and FN is the quantity of synthetic N fertilizer application (kg N ha −1 ). Data were analyzed using the methods of meta-analysis described in previous studies [30,[34][35][36][37]. The weighted means of the logarithmic response ratios was calculated for all independent studies as individual experiments often differ in their statistical precision.…”

Section: Discussionmentioning

confidence: 99%

“…The weighted means of the logarithmic response ratios was calculated for all independent studies as individual experiments often differ in their statistical precision. The homogeneity statistic Q was used to test whether variances were significantly different [34,35]. A mixed or random effects model was employed to determine whether mulching significantly affected each dependent variable using the statistical software MetaWin 2.1 (Systat Software, Inc, San Jose, CA, USA) with a resampling of 9999 iterations [35][36][37].…”

Section: Discussionmentioning

confidence: 99%

“…The Kolmogorov-Smirnov test indicated that the distribution of yield and NUE was not normal. We used the bootstrapping test (sampling with replacement of the size equal to the initial size of the subset repeated n = 9999 times) to generate means and 95% confidence intervals (CIs) for yield and NUE in the study, as well as subgroups of yield and NUE [35,37]. A negative change indicated a decrease in the respective variable with mulching relative to no mulching, whereas a positive value indicated an increase.…”

Section: Discussionmentioning

confidence: 99%

“…A negative change indicated a decrease in the respective variable with mulching relative to no mulching, whereas a positive value indicated an increase. Means of the different categorical variables were considered significantly different from one another if their 95% bootstrapping CIs did not overlap [35,36]. The frequency distribution of effect size was plotted and the frequency of effect size was fit to a Gaussian distribution function using SigmaPlot v. 12.5 software (Jandel Scientific, Corte Maders, CA, USA).…”

Section: Discussionmentioning

confidence: 99%

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Mulching-Induced Changes in Tuber Yield and Nitrogen Use Efficiency in Potato in China: A Meta-Analysis

et al. 2019

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In dry environments, potato (Solanum tuberosum L.) is grown under mulching for water conservation and improving tuber yield and nitrogen use efficiency (NUE). A meta-analysis was conducted to determine how mulching improved tuber yield and NUE in potato and how yield and NUE is influenced by fertilization, tillage practices, and growing environment in China. A search of peer-reviewed publications was performed to collect data on the effects of mulching on yield and NUE in potato grown in China. The data included were from field studies with a mulching and a no mulching treatment and data on tuber yield and NUE. A total of 169 publications (17 in English and 152 in Chinese) containing 1802 observations from 105 sites were compiled into the dataset. Mulching significantly increased both tuber yield and NUE by an average of 24% compared to no mulching, respectively. Plastic film mulching was more effective in improving yield and NUE than straw mulching. The yield and NUE increase were highest under plastic film mulching on ridge-furrow plots and straw mulching on flat plots. Mulching was more effective at improving yield and NUE in the Northwest dryland region at a plant density between 55,000 and 70,000 plants ha−1 and with application of synthetic N and P2O5 at rates of 100−200 kg ha−1, K fertilization at 0−100 kg K2O ha−1, and without organic fertilization. Integrated use of organic fertilizer and mulching was found to reduce synthetic N and P fertilizer input by 50% and K fertilizer input by 100% for production without affecting yield and NUE. These results demonstrate that mulching increases yield and NUE in potato in China, but the benefits occur when the growing region, tillage, and fertilization practices are appropriately considered.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Mulching-Induced Changes in Tuber Yield and Nitrogen Use Efficiency in Potato in China: A Meta-Analysis

et al. 2019

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“…Maich et al, (2017) reported elevated temperature caused a reduction in grain yield between 6-21% as compared normal grown varieties. Aynehband et al, (2011) andWang et al, (2017) reported that grain weight depends on different dates of sowing and water availability.…”

Section: Mean Sum Of Squarementioning

confidence: 99%

Stem Reserve Mobilization in Relation to Yield under Different Drought and High Temperature Stress Conditions in Wheat (Triticum aestivum L.) Genotypes

Ram¹,

Kumar²,

ta³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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Bottom‐up redistribution of biomass optimizes energy allocation, water use and yield formation in dryland wheat improvement

Guo

et al. 2021

J Sci Food Agric

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BACKGROUND Modern wheat cultivars have been developed having distinct advantages in many aspects under drought stress, such as plasticity in biomass allocation and root system architecture. A better understanding of the biomass allocation mechanisms that enable modern wheat to achieve higher yields and yield‐based water use efficiency (WUEg) is essential for implementing best management strategies and identifying phenotypic traits for cultivar improvement. We systematically investigated the biomass allocation, morphological and physiological characteristics of three ploidy wheat genotypes under 80% and 50% field water‐holding capacity (FC) conditions. Some crucial traits were also assessed in a complementary field experiment. RESULTS The diploid and tetraploid genotypes were found to allocate more biomass to the root system, especially roots in the topsoil under drought stress. Our data illustrated that lower WUEg and yield of these old genotypes were due to excessive investment in the root system, which was associated with severely restricted canopy development. Modern hexaploid genotypes were found to allocate smaller biomass to roots and larger biomass to shoots. This not only ensured the necessary water uptake, but also allowed the plant to distribute more assimilates and limited water to the shoots. Therefore, the hexaploid genotypes have evolved a stable plant canopy structure to optimize WUEg and grain yield. CONCLUSION This study demonstrated that the biomass shift from below ground to above ground or a more balanced root:shoot ratio tended to optimize water use and yield of the modern cultivars. This discovery provides potential guidance for future dryland wheat breeding and sustainable management strategies. © 2021 Her Majesty the Queen in Right of Canada Journal of The Science of Food and Agriculture © 2021 Society of Chemical Industry. Reproduced with the permission of the Minister of Agriculture and Agri‐Food Canada.

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Effects of Drought Stress on Morphophysiological Traits, Biochemical Characteristics, Yield, and Yield Components in Different Ploidy Wheat

Cited by 68 publications

References 63 publications

Mulching-Induced Changes in Tuber Yield and Nitrogen Use Efficiency in Potato in China: A Meta-Analysis

Mulching-Induced Changes in Tuber Yield and Nitrogen Use Efficiency in Potato in China: A Meta-Analysis

Stem Reserve Mobilization in Relation to Yield under Different Drought and High Temperature Stress Conditions in Wheat (Triticum aestivum L.) Genotypes

Bottom‐up redistribution of biomass optimizes energy allocation, water use and yield formation in dryland wheat improvement

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