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1. A Comparison of Plant Temperatures as Measured by Thermal Imaging and Infrared Thermometry

Author:
Hackl, H.; Baresel, J. P.; Mistele, B.; Hu, Y.; Schmidhalter, U.
Source:
Journal of agronomy and crop science 2012 v.198 no.6 pp. 415-429
ISSN:
0931-2250
Subject:
canopy; crops; drought; image analysis; indicator species; leaf water potential; leaves; plant stress; salt tolerance; salts; soil; thermography
Abstract:
... The temperature of leaves and canopies of plants has long been recognised to be an indicator of plant water stress and can be assessed by thermometry or thermography. Considerable research has been carried out with each of these techniques individually; however, a comparable assessment has not been done to the best of our knowledge. Therefore, we compared the potential of high‐resolution thermogra ...
DOI:
10.1111/j.1439-037X.2012.00512.x

2. Effect of Elevated CO₂ and Temperature on Nitrogen Dynamics and Microbial Activity During Wheat (Triticum aestivum L.) Growth on a Subtropical Inceptisol in India

Author:
Rakshit, R.; Patra, A. K.; Pal, D.; ‐Kumar, M.; Singh, R.
Source:
Journal of agronomy and crop science 2012 v.198 no.6 pp. 452-465
ISSN:
0931-2250
Subject:
ammonia; nitrate reductase; wheat; dissolved organic carbon; roots; nitrites; population dynamics; shoots; carbon dioxide; Triticum aestivum; grain yield; mineralization; air temperature; nitrification; denitrification; microbial activity; nitrogen; microbial biomass; growth chambers; India
Abstract:
... Using phytotron growth chambers, a short‐term pot experiment under non‐limiting water condition was conducted to investigate the individual and interactive effects of elevated carbon dioxide (650 ± 10 μmol mol⁻¹ vs. ambient), temperature (3 °C above ambient vs. ambient) and different levels of urea–N (control, 100 % N and 200 % N of recommended dose) on growth and yields of wheat crop and changes ...
DOI:
10.1111/j.1439-037X.2012.00516.x

3. Gas Exchange of Five Warm‐Season Grain Legumes and their Susceptibility to Heat Stress

Author:
Herzog, H.; Chai‐Arree, W.
Source:
Journal of agronomy and crop science 2012 v.198 no.6 pp. 466-474
ISSN:
0931-2250
Subject:
chlorophyll; cowpeas; crops; electron transfer; flowering; fluorescence; gas exchange; growth chambers; heat; heat stress; leaves; mung beans; photosynthesis; soybeans; stomatal conductance; temperature
Abstract:
... Objective of this study was to compare the heat stress performance of four pulses from dry and hot areas (mungbeans, limabeans, and teparybeans and cowpeas) with that of soybeans. Two experiments were conducted in growth chambers, and data were pooled because results of both experiments were similar. Plants were raised up to flowering at 24/17 °C (day/night) and were then either exposed to these t ...
DOI:
10.1111/j.1439-037X.2012.00517.x

4. The Response of the Leguminous Fodder Plant Bituminaria bituminosa to Water Stress

Author:
Martínez‐Fernández, D.; Walker, D. J.; Romero, P.; Martínez‐Ballesta, M. C.; Correal, E.
Source:
Journal of agronomy and crop science 2012 v.198 no.6 pp. 442-451
ISSN:
0931-2250
Subject:
Bituminaria bituminosa; basins; biomass; breeding lines; drought; ethylene glycol; forage; hydroponics; leaf area; leaves; physiological response; proline; psoralens; root hydraulic conductivity; root shoot ratio; roots; shoots; soil water deficit; turgor; water content; water potential; Canary Islands; Spain
Abstract:
... Bituminaria bituminosa (L.) C.H. Stirton (Fabaceae) is a biennial–perennial species, which grows throughout the Mediterranean basin and Macaronesia. It is cultivated to provide livestock fodder and shows promise as a source of furanocoumarins. This is the first report on its physiological and growth responses to water deprivation. We assessed these in a pot assay, in the field and in hydroponic cu ...
DOI:
10.1111/j.1439-037X.2012.00515.x

5. Water Deficit during the Reproductive Period of Grass Pea (Lathyrus sativus L.) Reduced Grain Yield but Maintained Seed Size

Author:
Gusmao, M.; Siddique, K. H. M.; Flower, K.; Nesbitt, H.; Veneklaas, E. J.
Source:
Journal of agronomy and crop science 2012 v.198 no.6 pp. 430-441
ISSN:
0931-2250
Subject:
ovules; Lathyrus sativus; viability; flowering; seeds; seedlings; water use efficiency; shoots; farming systems; drought; leaf water potential; pods; pollen tubes; grain yield; toxins; legumes; seed yield; pollen; crops
Abstract:
... The grain legume grass pea (Lathyrus sativus L.) is adapted to drought‐prone environments, but the extent and mechanisms of its tolerance are not well understood. In a pot experiment, water deficit was imposed on plants by withholding water from first flowering until predawn leaf water potential (LWPₚd) was −3.12 MPa. Water deficit reduced dry matter, seed yield, harvest index and water use effici ...
DOI:
10.1111/j.1439-037X.2012.00513.x

6. Combined Effect of Zinc and Cadmium Levels on Root Antioxidative Responses in Three Different Zinc‐Efficient Wheat Genotypes

Author:
Sanaeiostovar, A.; Khoshgoftarmanesh, A. H.; Shariatmadari, H.; Afyuni, M.; Schulin, R.
Source:
Journal of agronomy and crop science 2012 v.198 no.4 pp. 276-285
ISSN:
0931-2250
Subject:
Triticum aestivum; Triticum turgidum subsp. durum; ascorbate peroxidase; cadmium; crops; durum wheat; enzyme activity; genotype; membrane permeability; nutrient solutions; roots; seedlings; superoxide dismutase; toxicity; zinc
Abstract:
... This work was undertaken to investigate the effect of zinc (Zn) nutrition on root antioxidative responses to cadmium (Cd) toxicity of three wheat genotypes differing in Zn efficiency. A hydroponic experiment was carried out in which two bread wheat genotypes (Triticum aestivum L. cvs. ‘Rushan’ and ‘Cross’) and one durum wheat genotype (Triticum durum L. cv. Durum) were exposed to three Zn2+ (10−11 ...
DOI:
10.1111/j.1439-037X.2012.00504.x

7. Effect of Nickel on Membrane Integrity, Lipid Peroxidation and Fatty Acid Composition in Wheat Seedlings

Author:
Gajewska, E.; Bernat, P.; Długoński, J.; Skłodowska, M.
Source:
Journal of agronomy and crop science 2012 v.198 no.4 pp. 286-294
ISSN:
0931-2250
Subject:
electrolytes; fatty acid composition; hydrogen peroxide; linolenic acid; lipid peroxidation; membrane permeability; nickel; palmitic acid; palmitoleic acid; roots; seedlings; shoots; wheat
Abstract:
... The influence of 50 and 100 μm Ni on membrane integrity, hydrogen peroxide content, lipid peroxidation as well as total fatty acid composition was studied in shoots and roots of wheat seedlings. In both organs, treatment with Ni led to significant increase in electrolyte leakage reflecting the metal‐induced enhancement of membrane permeability. In the shoots, it was accompanied by significant incr ...
DOI:
10.1111/j.1439-037X.2012.00514.x

8. Genotypic Differences in Root Hair Deformation and Subsequent Nodulation for Red Clover under Different Additions of Starter N Fertilization

Author:
Thilakarathna, R. M. M. S.; Papadopoulos, Y. A.; Fillmore, S. A. E.; Prithiviraj, B.
Source:
Journal of agronomy and crop science 2012 v.198 no.4 pp. 295-303
ISSN:
0931-2250
Subject:
Rhizobium leguminosarum bv. trifolii; Trifolium pratense; cultivars; deformation; diploidy; genetic variation; nitrogen content; nitrogen fertilizers; nitrogen fixation; nodulation; pastures; root hairs; tetraploidy
Abstract:
... Red clover cultivars, including diploid and tetraploid, are commonly used in legume‐based pasture mixtures. However, information on nodulation under different starter N regimens is limited. We hypothesized that there is genetic variability among different red clover cultivars for nodulation. A root hair deformation assay was conducted using three diploid (AC Christie, Tapani and CRS15) and three t ...
DOI:
10.1111/j.1439-037X.2012.00505.x

9. Independent and Combined Effects of Soil Warming and Drought Stress During Anthesis on Seed Set and Grain Yield in Two Spring Wheat Varieties

Author:
Weldearegay, D. F.; Yan, F.; Jiang, D.; Liu, F.
Source:
Journal of agronomy and crop science 2012 v.198 no.4 pp. 245-253
ISSN:
0931-2250
Subject:
Triticum aestivum; abscisic acid; biomass; climate; crops; drought; flowering; grain yield; greenhouses; harvest index; irrigation; leaves; seed abortion; seed set; shoots; soil heating; soil temperature; soil water; spring wheat; tillers; water content; water stress; Denmark
Abstract:
... Increase in soil temperature together with decrease in soil moisture during anthesis of spring wheat (Triticum aestivum L) crops is predicted to occur more frequently in a future climate in Denmark. The objective of this study was to investigate the responses of two Danish spring wheat varieties (Trappe and Alora) to soil warming (H), drought (D) and both (HD) during anthesis. The plants were grow ...
DOI:
10.1111/j.1439-037X.2012.00507.x

10. Rainfall Harvesting and Mulches Combination for Corn Production in the Subhumid Areas Prone to Drought of China

Author:
Xiaoli, C.; Pute, W.; Xining, Z.; Xiaolong, R.; Zhikuan, J.
Source:
Journal of agronomy and crop science 2012 v.198 no.4 pp. 304-313
ISSN:
0931-2250
Subject:
corn straw; drought; dryland farming; economic feasibility; furrows; grain yield; irrigation; mulching; plastic film; soil water storage; straw mulches; water harvesting; water use efficiency; China
Abstract:
... A field study was conducted to determine the effect of a combination of the plastic‐covered ridge and furrow rainwater harvesting (PRFRH) with different mulching materials, namely, 0.08‐mm‐thick plastic film (T1), 10‐cm‐thick corn straw (T2), 8 % biodegradable film (T3), liquid film (T4), bare furrow (T5) and conventional flat (CF), on corn production, soil water storage and water use efficiency ( ...
DOI:
10.1111/j.1439-037X.2012.00508.x

11. The Sustainability of Quinoa Production in Southern Bolivia: from Misrepresentations to Questionable Solutions. Comments on Jacobsen (2011, J. Agron. Crop Sci. 197: 390–399)

Author:
Winkel, T.; Bertero, H. D.; Bommel, P.; Bourliaud, J.; Chevarría Lazo, M.; Cortes, G.; Gasselin, P.; Geerts, S.; Joffre, R.; Léger, F.; Martinez Avisa, B.; Rambal, S.; Rivière, G.; Tichit, M.; Tourrand, J. F.; Vassas Toral, A.; Vacher, J. J.; Vieira Pak, M.
Source:
Journal of agronomy and crop science 2012 v.198 no.4 pp. 314-319
ISSN:
0931-2250
Subject:
developing countries; disasters; environmental impact; ethics; exports; farmers; grain yield; markets; social environment; soil degradation; sustainable agriculture; Bolivia
Abstract:
... Reviewing the situation of quinoa production in southern Bolivia, Jacobsen (2011, J. Agron. Crop Sci. 197: 390) argues that the booming export market has a negative effect on the environment and on the home consumption of quinoa, thereby leading to an environmental disaster in the region. In view of the scarcity of scientific knowledge on the rapid social and environmental dynamics in the region, ...
DOI:
10.1111/j.1439-037X.2012.00506.x

12. Waterlogging and Hypoxia have Permanent Effects on Wheat Root Growth and Respiration

Author:
Araki, H.; Hossain, M. A.; Takahashi, T.
Source:
Journal of agronomy and crop science 2012 v.198 no.4 pp. 264-275
ISSN:
0931-2250
Subject:
Triticum aestivum; carbon dioxide; emissions; flooded conditions; flowering; hydroponics; hypoxia; root growth; root systems; roots; seedlings; shoots; sugars; wheat
Abstract:
... Waterlogging causes long‐lasting damage to wheat (Triticum aestivum). Root growth and respiration were investigated after heading in waterlogged, pot‐grown, wheat plants and also in hydroponically grown, wheat seedlings exposed to a hypoxic treatment. In the pot experiment, plants were subjected to 8 days of waterlogging after heading. This period of waterlogging resulted in reduced shoot an ...
DOI:
10.1111/j.1439-037X.2012.00510.x

13. What is Wrong With the Sustainability of Quinoa Production in Southern Bolivia – A Reply to Winkel et al. (2012)

Author:
Jacobsen, S.‐E.
Source:
Journal of agronomy and crop science 2012 v.198 no.4 pp. 320-323
ISSN:
0931-2250
Subject:
Bolivia; paper; crops; crop production
Abstract:
... Winkel et al. (2012) have written a note called ‘The sustainability of quinoa production in southern Bolivia: from misrepresentations to dubious solutions. A reply to S. Jacobsen’, which is arguing against my paper (J. Agron. Crop Sci. 197, 2011, 390). In the following, I will respond to their main points. ...
DOI:
10.1111/j.1439-037X.2012.00511.x

14. Yield and Quality Characteristics of Quinoa Grown in Open Field Under Different Saline and Non‐Saline Irrigation Regimes

Author:
Pulvento, C.; Riccardi, M.; Lavini, A.; Iafelice, G.; Marconi, E.; d’Andria, R.
Source:
Journal of agronomy and crop science 2012 v.198 no.4 pp. 254-263
ISSN:
0931-2250
Subject:
Chenopodium quinoa; cultivars; electrical conductivity; field experimentation; irrigation management; saline water; salt stress; seeds
Abstract:
... A possible alternative to minimize the effects of salt and drought stress is the introduction of species tolerating these conditions with a good adaptability in terms of quantitative and qualitative yield. So quinoa (Chenopodium quinoa Willd.) cultivar Titicaca was grown in an open field trial in 2009 and 2010 to investigate the effects of salt and drought stress on quantitative and qualitative as ...
DOI:
10.1111/j.1439-037X.2012.00509.x

15. Carbohydrate Dynamics in Leaves of Rapeseed (Brassica napus) Under Drought

Author:
Müller, T.; Lentzsch, P.; Müller, M. E. H.
Source:
Journal of agronomy and crop science 2012 v.198 no.3 pp. 207-217
ISSN:
0931-2250
Subject:
Brassica napus; acids; cell walls; drought; flowering; fructose; glucose; growth chambers; leaf development; leaves; raffinose; rapeseed; sucrose; trehalose; vegetative growth; water stress
Abstract:
... Until now, the carbohydrate dynamics in leaves of rapeseed under drought have largely been unknown. For this reason, a growth chamber study was conducted to examine whether the accumulation of carbohydrates under drought stress contributes to osmotic adjustment in leaf tissue. Plants of the cultivar Titan were subjected to temporary drought in the vegetative and reproductive stages. A third varian ...
DOI:
10.1111/j.1439-037X.2011.00502.x

16. Differential Responses of Antioxidative Defence System to Long‐Term Field Drought in Wheat (Triticum aestivum L.) Genotypes Differing in Drought Tolerance

Author:
Singh, S.; Gupta, A. K.; Kaur, N.
Source:
Journal of agronomy and crop science 2012 v.198 no.3 pp. 185-195
ISSN:
0931-2250
Subject:
Triticum aestivum; abiotic stress; antioxidant activity; developmental stages; drought; drought tolerance; environmental factors; enzyme activity; genotype; leaves; lipid content; lipid peroxidation; oxidative stress; plant development; reproductive system; roots; water potential; wheat; yield components
Abstract:
... Drought is a severe abiotic stress and the major constraint on wheat (Triticum aestivum L.) productivity world wide. Deciphering the mechanisms of drought tolerance is a challenging task because of the complexity of drought responses, environmental factors and their interactions. The objective of this study was to evaluate the ability of the antioxidative defence system in imparting tolerance agai ...
DOI:
10.1111/j.1439-037X.2011.00497.x

17. Drought Impacts Mineral Contents in Andean Potato Cultivars

Author:
Lefèvre, I.; Ziebel, J.; Guignard, C.; Hausman, J.‐F.; Gutiérrez Rosales, R. O.; Bonierbale, M.; Hoffmann, L.; Schafleitner, R.; Evers, D.
Source:
Journal of agronomy and crop science 2012 v.198 no.3 pp. 196-206
ISSN:
0931-2250
Subject:
cations; climate change; cultivars; drought; drought tolerance; field experimentation; genotype; mineral content; nutrient content; phloem loading; potatoes; sap; sucrose; tubers; water content; water deprivation; Andes region
Abstract:
... Mineral micro‐ and macronutrients in tubers of 21 Andean potato cultivars were investigated in a field trial under control and drought conditions. Mineral concentrations in potato tubers were highly variable between genotypes; some were significantly and positively correlated with each other, the most noteworthy associations being Na–Ca, Mn–Mg and Zn–Fe, in both control and drought‐stressed plants ...
DOI:
10.1111/j.1439-037X.2011.00499.x

18. Effects of Salinity and Soil–Drying on Radiation Use Efficiency, Water Productivity and Yield of Quinoa (Chenopodium quinoa Willd.)

Author:
Razzaghi, F.; Ahmadi, S. H.; Jacobsen, S.‐E.; Jensen, C. R.; Andersen, M. N.
Source:
Journal of agronomy and crop science 2012 v.198 no.3 pp. 173-184
ISSN:
0931-2250
Subject:
Chenopodium quinoa; arid zones; crops; drought; dry matter accumulation; field capacity; flowering; irrigation rates; irrigation water; lysimeters; nitrogen; photosynthetically active radiation; radiation use efficiency; salinity; seed yield; seeds
Abstract:
... Drought and salinity reduce crop productivity especially in arid and semi‐arid regions, and finding a crop which produces yield under these adverse conditions is therefore very important. Quinoa (Chenopodium quinoa Willd.) is such a crop. Hence, a study was conducted in field lysimeters to investigate the effect of salinity and soil–drying on radiation use efficiency, yield and water productiv ...
DOI:
10.1111/j.1439-037X.2011.00496.x

19. Genetic Variation for Maize Epicuticular Wax Response to Drought Stress at Flowering

Author:
Meeks, M.; Murray, S. C.; Hague, S.; Hays, D.; Ibrahim, A. M. H.
Source:
Journal of agronomy and crop science 2012 v.198 no.3 pp. 161-172
ISSN:
0931-2250
Subject:
corn; crop production; drought; drought tolerance; epicuticular wax; flowering; genetic variation; genotype; germplasm; heritability; hybrids; inbred lines; irrigation rates; leaf area; leaves; progeny; screening; stress response; testcrosses; water stress; waxes
Abstract:
... Drought stress is thought to promote epicuticular wax accumulation on maize leaves, which reduces plant water loss. We evaluated 62 maize inbred lines and their hybrid testcross progeny for epicuticular wax accumulation on flag leaves at flowering under full and limited irrigation regimes. Extracted wax was measured as a percentage of wax weight to leaf weight (WLW) and leaf area (WLA). Eleven gen ...
DOI:
10.1111/j.1439-037X.2011.00495.x

20. Interactive Effects of High Boron and NaCl Stresses on Subcellular Localization of Chloride and Boron in Wheat Leaves

Author:
Masood, S.; Wimmer, M. A.; Witzel, K.; Zörb, C.; Mühling, K. H.
Source:
Journal of agronomy and crop science 2012 v.198 no.3 pp. 227-235
ISSN:
0931-2250
Subject:
additive effect; boron; germination; growth retardation; hydroponics; leaves; osmolality; plant response; salinity; salt stress; shoots; sodium chloride; toxicity; transpiration; water content; weight loss; wheat
Abstract:
... Salinity and boron (B) toxicity often occur simultaneously and may have interactive effects on plant responses. This study aims at further investigating long‐term effects of salinity, B toxicity and their combination on wheat plants. Plants grown in hydroponics were treated with 2.5 μm H3BO3 (control), 75 mm NaCl, 200 μm H3BO3 or 75 mm NaCl + 200 μm H3BO3 and were analysed on a subcellular level 6 ...
DOI:
10.1111/j.1439-037X.2011.00501.x