Conserved water use improves the yield performance of soybean (Glycine max (L.) Merr.) under drought

He, Jin; Du, Yongmei; Wang, Tao; Turner, Neil C.; Yang, Runjun; Jin, Yi; Yang, Xi; Zhang, Cong; Cui, Ting; Fang, Xiang‐Wen; Li, Feng Min

doi:10.1016/j.agwat.2016.07.008

Cited by 95 publications

(82 citation statements)

References 33 publications

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“…A similar association between leaf area at flowering, daily water use before flowering and grain yield was also observed in a recent study with soybean (He et al, 2017).…”

Section: Introductionsupporting

confidence: 52%

Bigger is not always better: Reducing leaf area helps stay-green sorghum use soil water more slowly

George‐Jaeggli

Mortlock

Borrell

2017

Environmental and Experimental Botany

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A B S T R A C TStay-green, a trait that confers delayed leaf senescence and improved grain yield under post-anthesis drought, has been associated with smaller canopies at flowering and increased water uptake during the post-flowering period. It has been shown that the main stay-green quantitative trait loci reduce leaf area via reduced tiller number and smaller leaves. To show that these canopy characteristics are directly linked to water savings, we grew near-isogenic lines with and without stay-green introgressions in large lysimeter pots and measured their weekly pre-anthesis water use and main-stem and tiller leaf area. Paradoxically, age-related senescence of lower leaves in stay-green lines was accelerated before flowering, contributing to their smaller leaf area at flowering. This process of reducing leaf area by shedding old leaves lower in the canopy, has not previously been described for the stay-green introgressions. We found that tiller leaf area rather than transpiration efficiency, or transpiration per leaf area, was the main driver of weekly transpiration and the reduced pre-flowering water use in stay-green lines. In soils with good water-holding capacity, any water savings during the pre-anthesis period increases water availability during the post-anthesis period, therefore allowing plants to retain photosynthetic capacity for longer by "staying green" during grain filling.Crown

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“…A similar association between leaf area at flowering, daily water use before flowering and grain yield was also observed in a recent study with soybean (He et al, 2017).…”

Section: Introductionsupporting

confidence: 52%

Bigger is not always better: Reducing leaf area helps stay-green sorghum use soil water more slowly

George‐Jaeggli

Mortlock

Borrell

2017

Environmental and Experimental Botany

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“…The reduction was 82% during pod lengthening due to the cumulative effects of reduced no. of flowers, pod abortion, and reduced pod production under soil moisture stress conditions (Atti et al 2004;He et al 2017;Wijewardana et al 2018). Total leaf area per plant also declined with increasing soil moisture stress (Figure 4(C)).…”

Section: Growth and Developmental Attributesmentioning

confidence: 92%

Physiological assessment of water deficit in soybean using midday leaf water potential and spectral features

Wijewardana

Alsajri

Irby

et al. 2019

Journal of Plant Interactions

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Drought is one of the major abiotic stresses that limit soybean production worldwide. This study was conducted to determine whether soybean cultivars with divergent growth habits respond differently to drought stress at the vegetative growth stage regarding canopy reflectance, physiological, and gas exchange traits under controlled conditions. Soil moisture content was positively correlated with midday leaf water potential. Pooled over cultivar, photosynthesis and stomatal conductance were highly correlated with midday leaf water potential, while Ci/Ca exhibited a weak positive correlation. These data indicate that, regardless of cultivar, the decrease in net photosynthesis is mainly due to stomatal closure. For both cultivars, drought stress increased soybean canopy reflectance in the visible range of the spectrum but decreased reflectance in the near-infrared region. The quantified physiological traits would be useful to understand plant water relations and canopy structure to help soybean growers to make field management decisions during the growing season.

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“…Crop yield could be restrained by drought stress has been well documented in previous studies [6,7,8,9,10]. For instance, drought stress could signi cantly decrease soybean grain yield by 24-50% but gain higher water use e ciency (WUE) [11]. Meanwhile, WUE is an important trait for indicating plant resistance under drought stress [12].…”

Section: Introductionmentioning

confidence: 89%

“…It has been reported that water shortage at owering stage negatively affected chickpea (Cicer arietinum Linn.) yield [17], but soybean (Glycine max L.) owering time was observed no response under drought stress [11]. Besides, root is always playing an important role in regulating crop productivity under drought stress, especially for the legume crop with nodules can x N 2 from atmosphere used as N nutrition [2,18,19].…”

Section: Introductionmentioning

confidence: 99%

Biochar addition alleviate the negative effects of drought and salinity stress on soybean productivity and water use efficiency

Zhang

Ding

Wang

et al. 2020

Preprint

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Background: Environmental stress is a crucial factor restricting plant growth as well as crop productivity, thus influencing the agricultural sustainability. Biochar addition is proposed as an effective management to improve crop performance. However, there were few studies focused on the effect of biochar addition on crop growth and productivity under interactive effect of abiotic stress (e.g., drought and salinity). This study was conducted with a pot experiment to investigate the interaction effects of drought and salinity stress on soybean yield, leaf gaseous exchange and water use efficiency (WUE) under biochar addition. Results: Drought and salinity stress significantly depressed soybean phenology (e.g. flowering time) and all the leaf gas exchange parameters, but had inconsistent effects on soybean root growth and WUE at leaf and yield levels. Salinity stress significantly decreased photosynthetic rate, stomatal conductance, intercellular CO2 concentration and transpiration rate by 20.7%, 26.3%, 10.5% and 27.2%, respectively. Lower biomass production and grain yield were probably due to the restrained photosynthesis under drought and salinity stress. Biochar addition significantly enhanced soybean grain yield by 3.1-14.8%. Drought stress and biochar addition significantly increased WUE-yield by 27.5% and 15.6%, respectively, while salinity stress significantly decreased WUE-yield by 24.2%. Drought and salinity stress showed some negative interactions on soybean productivity and leaf gaseous exchange. But biochar addition alleviate the negative effects on soybean productivity and water use efficiency under drought and salinity stress. Conclusions: The results of the present study indicated that drought and salinity stress could significantly depress soybean growth and productivity. There exist interactive effects of drought and salinity stress on soybean productivity and water use efficiency, while we could employ biochar to alleviate the negative effects. We should consider the interactive effects of different abiotic restriction factors on crop growth thus for sustainable agriculture in the future.

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Conserved water use improves the yield performance of soybean (Glycine max (L.) Merr.) under drought

Cited by 95 publications

References 33 publications

Bigger is not always better: Reducing leaf area helps stay-green sorghum use soil water more slowly

Bigger is not always better: Reducing leaf area helps stay-green sorghum use soil water more slowly

Physiological assessment of water deficit in soybean using midday leaf water potential and spectral features

Biochar addition alleviate the negative effects of drought and salinity stress on soybean productivity and water use efficiency

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