scholarly journals Nitrogen fixation sensitivity related to water use efficiency at reproductive development in soybean

2020 ◽  
Vol 66 (No. 7) ◽  
pp. 345-350
Author(s):  
Yan Jiang ◽  
C. Andy King ◽  
Larry C. Purcell ◽  
Shaodong Wang
Keyword(s):  
Nitrogen Fixation ◽  
Water Use Efficiency ◽  
Water Use ◽  
Reproductive Development ◽  
Genotypic Difference ◽  
Acetylene Reduction Activity ◽  
Reduction Activity ◽  
Glycine Max L ◽  
Seed Fill ◽  
Use Efficiency

Soybean [Glycine max (L.) Merr.] nitrogen fixation is sensitive differentially to drought among different genotypes at different growth and development stages, which directly affects soybean yield. Acetylene reduction activity (ARA) response to a gradual drought and rewatering period at late podding (late R<sub>3</sub>) and late seed fill (late R<sub>5</sub>) were evaluated in two different water use efficiency (WUE) genotypes. Drought-stressed plants with high WUE (PI 372413) decreased ARA more insensitively than that of low WUE (PI 548534), and drought-stressed plants with low WUE (PI 548534) maintained low ARA level after stress alleviation at late R<sub>5</sub>. The recovery ability of N<sub>2</sub> fixation was a genotypic difference with WUE at late reproductive development (late R<sub>5</sub>), especially. Analysing relation between fraction of transpirable soil water (FTSW) and relative ARA, it was confirmed that PI 372413 with high WUE was more insensitive to water deficit and had drought tolerance by N<sub>2</sub> fixation and recovery ability with a threshold of 0.139–0.147 FTSW than PI 548534 with a threshold of 0.192–0.209 FTSW. The ability to recover N<sub>2</sub> fixation following drought during the reproductive developmental stage would be of an important value in the actual planting environment.  

Cultivar complementarity for symbiotic nitrogen fixation and water use efficiency in pea-oat intercrops and its effect on forage yield and quality

2018 ◽  
Vol 226 ◽  
pp. 28-37 ◽  
Author(s):  
Ioannis T. Tsialtas ◽  
Dimitrios Baxevanos ◽  
Dimitrios N. Vlachostergios ◽  
Christos Dordas ◽  
Anastasios Lithourgidis
Keyword(s):  
Nitrogen Fixation ◽  
Water Use Efficiency ◽  
Water Use ◽  
Symbiotic Nitrogen Fixation ◽  
Forage Yield ◽  
Yield And Quality ◽  
Use Efficiency

scholarly journals Response of Soybean [Glycine max (L.)Merrill] to Irrigation at Different Growth Stages

2019 ◽  
Author(s):  
S A Jaybhay ◽  
Philips Varghese ◽  
S P Jaybhay ◽  
B D Idhol ◽  
B N Waghmare ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Growth Stages ◽  
Flower Initiation ◽  
Seed Filling ◽  
Net Returns ◽  
Glycine Max L ◽  
Maximum Water ◽  
Use Efficiency ◽  
Initiation Stage

A field experiment was carried out in rainy seasons of 2009, 2010 and 2011 to study the effect of irrigation schedules on yield, water use efficiency and other traits in soybean. Seven irrigation schedules consisted of irrigations at seedling stage (15–20 days after sowing), flower initiation stage, seed filling stage (20 days after flower initiation) and four different combinations of these 3 stages. Irrigation at flower initiation + seed filling stages produced the highest seed yield (3221 kg/ha). Maximum average values for seed index (14.59 g) and harvest index (50.87%) were recorded in this treatment. This treatment also recorded maximum net returns (₹ 44028/ha) followed by irrigation at seedling + flower initiation + seed initiation stages (₹ 42046/ha) and flower initiation stage (₹ 41880/ha). Control (no irrigation) had maximum water use efficiency (84.85 kg/ha/cm) followed by irrigation at flower initiation stage (83.30 kg/ha/cm). Studies indicated that irrigation to the soybean crop at flower initiation and seed filling stages helps to obtain the optimum yield and earn maximum net returns.

Nitrogen fixation by lablab (Lablab purpureus) and lucerne (Medicago sativa) rotation crops in an irrigated cotton farming system

2001 ◽  
Vol 41 (2) ◽  
pp. 219 ◽  
Author(s):  
L. M. McDonald ◽  
P. Wright ◽  
D. A. MacLeod
Keyword(s):  
Nitrogen Fixation ◽  
Water Use Efficiency ◽  
Water Use ◽  
Biomass Production ◽  
Green Manure ◽  
Farming Systems ◽  
Moisture Stress ◽  
Full Irrigation ◽  
Lablab Purpureus ◽  
Use Efficiency

Cotton producers in Australia are interested in including legume green manure crops in their farming systems. Lablab and lucerne are 2 crops that have been considered for this role. The object of this study was to determine their biomass production, nitrogen fixation, water use and water-use efficiency within a 1-year out-of-cotton rotation. Both species were grown under full irrigation, and partial irrigation, where periods of moisture stress occurred. During the period of the rotation, lablab produced more biomass and fixed more nitrogen than lucerne. Its biomass production was increased (from 9655 to 16 024 kg/ha) by full irrigation compared with partial irrigation, while lucerne biomass similarly increased (from 6563 to 8040 kg/ha). Lablab also fixed more nitrogen (177 kg N/ha) than lucerne (111 kg N/ha). Lucerne used more water than lablab and thus lablab had higher water-use efficiency of biomass production and nitrogen fixation. The study indicates that lablab produces more green manure with greater water-use efficiency than lucerne within a 1-year out-of-cotton rotation.

Dark-adapted leaf conductance, but not minimum leaf conductance, predicts water use efficiency of soybean (Glycine max L. Merr.)

2013 ◽  
Vol 93 (1) ◽  
pp. 13-22 ◽  
Author(s):  
Alison E. Walden-Coleman ◽  
Istvan Rajcan ◽  
Hugh J. Earl
Keyword(s):  
Glycine Max ◽  
Water Use Efficiency ◽  
Water Use ◽  
Leaf Conductance ◽  
Physiological Basis ◽  
Plant Water Use ◽  
Whole Plant ◽  
Glycine Max L ◽  
Use Efficiency ◽  
Soybean Leaves

Walden-Coleman, A. E., Rajcan, I. and Earl, H. J. 2013. Dark-adapted leaf conductance, but not minimum leaf conductance, predicts water use efficiency of soybean (Glycine max L. Merr.). Can. J. Plant Sci. 93: 13–22. The conductance to water vapor of dark-adapted leaves (gdark) has been shown to be negatively correlated with whole-plant water use efficiency (WUE) in soybean, but the physiological basis of this relationship is unknown. It is also not clear how gdark compares with the minimum leaf conductance of wilted leaves (gmin), a trait that has been studied extensively across a broad range of species. We compared gdark to gmin of soybean leaves and found that gdark values were consistently much higher than gmin values measured on the same leaves. Also, across seven soybean varieties known to differ for WUE, gdark but not gmin was correlated with WUE. Thus, gdark and gmin should be considered distinct traits. We measured gdark at two different leaf positions, and found that gdark measured at the lower leaf position (two main stem nodes below the youngest fully expanded leaf) was best correlated with WUE. We then used this method to screen a selection of current commercial soybean varieties adapted to Ontario, Canada, for variation in gdark. The range in gdark among the commercial varieties was as broad as that measured previously among more diverse genotypes, suggesting that Ontario soybean varieties might also vary widely for WUE.

Physiological effects of cerium oxide nanoparticles on the photosynthesis and water use efficiency of soybean (Glycine max (L.) Merr.)

2017 ◽  
Vol 4 (5) ◽  
pp. 1086-1094 ◽  
Author(s):  
Zhiming Cao ◽  
Cheyenne Stowers ◽  
Lorenzo Rossi ◽  
Weilan Zhang ◽  
Leonardo Lombardini ◽  
...  
Keyword(s):  
Glycine Max ◽  
Water Use Efficiency ◽  
Cerium Oxide ◽  
Water Use ◽  
Cerium Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Physiological Effects ◽  
Coating Property ◽  
Glycine Max L ◽  
Use Efficiency

CeO2NPs displayed concentration and coating property dependent effects on soybean photosynthesis and water use efficiency.

scholarly journals Genetic Diversity, Nitrogen Fixation, and Water Use Efficiency in a Panel of Honduran Common Bean (Phaseolus vulgaris L.) Landraces and Modern Genotypes

Plants ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 1238 ◽  
Author(s):  
Jennifer Wilker ◽  
Sally Humphries ◽  
Juan Rosas-Sotomayor ◽  
Marvin Gómez Cerna ◽  
Davoud Torkamaneh ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Nitrogen Fixation ◽  
Phaseolus Vulgaris ◽  
Water Use Efficiency ◽  
Common Bean ◽  
Water Use ◽  
Agronomic Traits ◽  
Snp Array ◽  
Phaseolus Vulgaris L ◽  
Use Efficiency

Common bean (Phaseolus vulgaris L.) provides critical nutrition and a livelihood for millions of smallholder farmers worldwide. Beans engage in symbiotic nitrogen fixation (SNF) with Rhizobia. Honduran hillside farmers farm marginal land and utilize few production inputs; therefore, bean varieties with high SNF capacity and environmental resiliency would be of benefit to them. We explored the diversity for SNF, agronomic traits, and water use efficiency (WUE) among 70 Honduran landrace, participatory bred (PPB), and conventionally bred bean varieties (HON panel) and 6 North American check varieties in 3 low-N field trials in Ontario, Canada and Honduras. Genetic diversity was measured with a 6K single nucleotide polymorphism (SNP) array, and phenotyping for agronomic, SNF, and WUE traits was carried out. STRUCTURE analysis revealed two subpopulations with admixture between the subpopulations. Nucleotide diversity was greater in the landraces than the PPB varieties across the genome, and multiple genomic regions were identified where population genetic differentiation between the landraces and PPB varieties was evident. Significant differences were found between varieties and breeding categories for agronomic traits, SNF, and WUE. Landraces had above average SNF capacity, conventional varieties showed higher yields, and PPB varieties performed well for WUE. Varieties with the best SNF capacity could be used in further participatory breeding efforts.

scholarly journals Evaluation of soybean [Glycine max (L.) Merr.] genotypes for yield, water use efficiency, and root traits

PLoS ONE ◽  
2019 ◽  
Vol 14 (2) ◽  
pp. e0212700 ◽  
Author(s):  
Harrison Gregory Fried ◽  
Sruthi Narayanan ◽  
Benjamin Fallen
Keyword(s):  
Glycine Max ◽  
Water Use Efficiency ◽  
Water Use ◽  
Root Traits ◽  
Glycine Max L ◽  
Use Efficiency
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