The influence of temperature on the accumulation and distribution of manganese in two cultivars of soybean (Glycine max [L.] Merr.)

1990 ◽  
Vol 41 (5) ◽  
pp. 835 ◽  
Author(s):  
DP Heenan ◽  
LC Campbell
Keyword(s):  
Glycine Max ◽  
High Temperatures ◽  
Solution Culture ◽  
Effect Of Temperature ◽  
Significant Difference ◽  
Influence Of Temperature On ◽  
Young Leaves ◽  
Rate Of Absorption ◽  
Glycine Max L ◽  
High Concentrations

Accumulation and distribution of manganese in soybeans (Glycine max [L.] Merr. cvv. Lee and Bragg) grown over a range of manganese concentrations from 0 to 275 8m in solution culture were studied at four day-night temperatures ranging from 20-15�C to 33-28�C in growth cabinets. High levels of solution manganese (275 8m ) produced symptoms of manganese toxicity and reduced yields of both varieties with the symptoms and yield reductions being more severe on Bragg than Lee. Increasing the day-night temperatures from 20-15�C to 33-28�C increased the ability of both cultivars to tolerate high concentrations of manganese in solution but there was no indication of any effect of temperature on the differential tolerance of the two cultivars. At high managanese concentrations in solution, high temperatures increased the rate of absorption by roots and total plant uptake of manganese, but there was no effect on the concentration of manganese in the plant tops. Total leaf concentration increased markedly while stem concentration were reduced at high temperatures. Young leaves contained lower concentrations of manganese than older leaves at all temperatures. While the concentration of manganese in the youngest expanding leaf decreased slightly as temperatures were raised from 20-15�C to 28-25�C, there was no significant difference in concentrations at 20-15�C and 33-28�C. These results suggest that the increased tolerance of soybeans to high manganese supply was not due to growth dilution in young tissues.

scholarly journals Unusual tolerance to high temperatures in a new herbicide-resistant D1 mutant from Glycine max (L.) Merr. cell cultures deficient in fatty acid desaturation

Planta ◽  
2001 ◽  
Vol 212 (4) ◽  
pp. 573-582 ◽  
Author(s):  
Miguel Alfonso ◽  
Inmaculada Yruela ◽  
Susana Almárcegui ◽  
Elena Torrado ◽  
María A. Pérez ◽  
...  
Keyword(s):  
Glycine Max ◽  
Fatty Acid ◽  
High Temperatures ◽  
Cell Cultures ◽  
Fatty Acid Desaturation ◽  
Herbicide Resistant ◽  
Glycine Max L

scholarly journals Seedling treatments and phosphorus solution concentrations affect nodulation and nodule functions in soybean (Glycine max L.)

2008 ◽  
Vol 53 (No. 2) ◽  
pp. 65-71 ◽  
Author(s):  
S.J. Miao ◽  
X.Z. Han ◽  
X.B. Liu ◽  
Y.F. Qiao
Keyword(s):  
Glycine Max ◽  
Plant Biomass ◽  
Dry Weight ◽  
Solution Culture ◽  
Acetylene Reduction Activity ◽  
Nodule Size ◽  
Reduction Activity ◽  
P Content ◽  
Significant Difference ◽  
Nutrient Solution Culture

The effect of three seedling treatments: T<sub>0</sub>, normal germination; T<sub>1</sub>, cotyledons removed; T<sub>2</sub>, cotyledons removed 5 days earlier than in T<sub>1</sub>; and two phosphorus levels (P<sub>0</sub> and P<sub>30</sub>) on nodulation and nodule function in soybean [<i>Glycine max</i> (L.) Merr.] were investigated in nutrient solution culture. The number of nodules formed at P<sub>0</sub> was in the order T<sub>2</sub> > T<sub>0</sub> > T<sub>1</sub>, but it was T<sub>0</sub> > T<sub>2</sub> > T<sub>1</sub> at P<sub>30</sub>. Nodule dry weight per plant had the same tendency as the nodule number. Nodule size (dry weight per nodule) in seedlings ranged from 0.601 to 1.089 mg in the order T<sub>0</sub> > T<sub>1</sub> > T<sub>2</sub>, regardless of P level. For example, nodule size in T<sub>0</sub> was larger by 86% and 52% than T<sub>2</sub> at P<sub>0</sub> and P<sub>30</sub>, respectively. Furthermore, regardless of P level, a specific acetylene reduction activity (ARA, &micro;M C<sub>2</sub>H<sub>4</sub>/h/g nodule) increased with P content in seedlings, but no significant difference was found (<i>P</i> < 0.05). Leghemoglobin (Lb) content was not significantly affected by P level; however, seedlings (T<sub>0</sub> and T<sub>1</sub>) significantly affected the Lb content per unit plant biomass (<i>P</i> < 0.05). All these results suggest that seedling P content plays a key role in nodulation and nodule function of soybean.

scholarly journals Effects of manganese toxicity on the growth of soybean (Glycine max L.) at the seedling stage

2021 ◽  
pp. 803-811
Author(s):  
Ying Liu ◽  
Jing Ye Chen ◽  
Xiao Hao Li ◽  
Shao Xia Yang ◽  
Han Qiao Hu ◽  
...  
Keyword(s):  
Glycine Max ◽  
Iron Content ◽  
Iron Concentration ◽  
The Other ◽  
Mn Toxicity ◽  
Main Symptom ◽  
Young Leaves ◽  
Glycine Max L ◽  
Soybean Roots ◽  
Mn Concentration

Effects of manganese (Mn) toxicity stress on the growth of soybean, the number of Mn spots on leaves and the absorption of iron and magnesium were studied by nutrient solution hydroponics. The results showed that the presence of Mn spots on leaves was the main symptom of Mn toxicity in soybean. When the concentration of exogenous Mn was 25 μmol/l, the leaf generated obvious Mn oxidation spots; when the concentration of exogenous Mn exceeded 50 μmol/l, the growth of soybean was inhibited, and the number of Mn spots increased significantly. With the increase in exogenous Mn concentration, the Mn concentration in the roots, young leaves and old leaves of soybean increased significantly. When the concentration of exogenous Mn reached 200 μmol/l, the number of Mn spots on primary leaves, old leaves and young leaves increased significantly. Although the iron concentration in the roots remained the same, the iron content in the old and young leaves decreased significantly. On the other hand, although Mn toxicity significantly reduced the concentration of magnesium in soybean roots, it increased the concentration of magnesium in old and young leaves. Bangladesh J. Bot. 50(3): 803-811, 2021 (September) Special

CULTIVO DA SOJA EM SISTEMAS DE SEMEADURA EM LINHAS CRUZADAS E CONVENCIONAL

2017 ◽  
Vol 32 (1) ◽  
pp. 17
Author(s):  
André Ricardo Rodrigues ◽  
Magno Luiz de Abreu ◽  
Everton Dos Santos de Oliveira
Keyword(s):  
Glycine Max ◽  
Experimental Design ◽  
Population Density ◽  
Dry Matter ◽  
Cropping Systems ◽  
Spatial Arrangement ◽  
Cross Sectional ◽  
Mato Grosso ◽  
Significant Difference ◽  
Glycine Max L

A importância da soja para o agronegócio brasileiro é bastante expressiva, por este motivo existe um número significativo de pesquisas associadas às melhorias de produtividade desta cultura, neste sentido o presente trabalho buscou avaliar o desenvolvimento da soja quanto as suas características de produtividade em sistema de semeadura cruzada. O experimento foi implantado no campo experimental do Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso, Campus Campo Novo do Parecis em Latossolo Vermelho Distroférrico típico muito argiloso (68% de argila), com a cultivar TMG 132. O delineamento experimental foi de blocos casualizados em esquema fatorial 2X5, totalizando 10 tratamentos com 3 repetições cada, sendo que o primeiro fator corresponde aos dois sistemas de cultivo (semeadura cruzada e convencional) e, o segundo fator as 5 densidades populacionais (222000 plantas ha-1; 288000 plantas ha-1; 333000 plantas ha-1; 399000 plantas ha-1; 444444 plantas ha-1). Cada parcela foi constituída de 9 linhas de 4 metros, espaçadas em 0,45 metros. Para a área útil da parcela foi utilizado 5 linhas centrais por 2 metros de comprimento. Na área útil das parcelas foram avaliados produtividade, massa seca e os componentes de produção, a adubação foi depositada na linha de semeadura. Não se constatou diferença significativa na produtividade, número de grãos por vagem e na massa de mil grãos tanto nos diferentes sistemas quanto nas populações, como o sistema de semeadura cruzada necessita de maior quantidade de passadas de semeadora na área se constatou uma prática não viável.PALAVRAS-CHAVE: Densidade populacional, arranjo espacial, sistemas de plantio, Glycine max L. SOYBEAN CULTIVATION IN CROSS-SECTIONAL AND CONVENTIONAL SYSTEMSABSTRACT: The importance of soy for Brazilian agribusiness is very expressive, for this reason there is a significant number of research associated with productivity improvements in this culture, in this sense, the present study sought to evaluate the development of soy as the productivity characteristics in seeding system crossed. The experiment was deployed in the experimental field of the Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso, Campus Campo Novo do Parecis in Latossolo Vermelho Distroférrico típico very argillaceous (68% of argil), It was used the cultivar TMG 132. Experimental design was a randomized block in factorial 2X5, totalling 10 treatments with 3 repetitions each, where the first factor corresponds to the two cropping systems (conventional and cross-seeding) and the second factor with 5 population density (222000 plants ha-1; 288000 plants ha-1; 333000 plants ha-1; 399000plants ha-1; 444444 plants ha-1). Productivity cross-seeding system. Each plot consisted of  9 lines of 4 meters, spaced at 0,45 meters, at the useful area of the central portion 5 by 2 meters long lines was used. In the usable area of the plots were evaluated productivity, dry matter and production components, fertilization was deposited in plant line. It did not find significant difference in productivity, number of grains per pods, and in thousand grains weight both in different systems and in populations, such as the system of cross-seeding needs greater quantity of operations in the planting it was not stated a viable practice.KEYWORDS: Population density, spatial arrangement, planting systems, Glycine max L.

scholarly journals Effect of Urea, NPK and Compost on Growth and Yield of Soybean (Glycine max L.), in Semi-Arid Region of Sudan

ISRN Agronomy ◽  
2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Samia Osman Yagoub ◽  
Wigdan Mohamed Ali Ahmed ◽  
A. A. Mariod
Keyword(s):  
Glycine Max ◽  
Block Design ◽  
Growth And Yield ◽  
Straw Yield ◽  
Significant Difference ◽  
Randomized Complete Block Design ◽  
Glycine Max L ◽  
Biological Yield ◽  
Semi Arid Region ◽  
Semi Arid

A field experiment was conducted for two consecutive seasons (2009/2010 and 2010/2011) on the Demonstration Farm of the College of Agricultural Studies, Sudan University of Science and Technology at Shambat, to study the effect of some fertilizers on growth and yield of soybean (Glycine max L. merril). The experiment was laid out in a randomized complete block design (RCBD) with four replicates. The fertilizers treatments consisted of three types of fertilizers: urea (180 kg/ha), NPK (361 kg/ha), compost (%) and the control. The results showed that fertilizers treatments in first season had significant difference on number of pods/plant, economic yield, harvest index. Mean while, highly significant difference on green, biological and straw yield. In second season fertilizers treatments had significant difference on plant height at 30 days, leaf area at 45 and 60 days, green yield, biological yield and straw yield.

COMPARATIVE RESPONSES OF PHOTOSYNTHESIS TO GROWTH TEMPERATURE IN SOYBEAN (Glycine max [L.] Merrill) CULTIVARS

1988 ◽  
Vol 68 (2) ◽  
pp. 419-425 ◽  
Author(s):  
F. CAULFIELD ◽  
J. A. BUNCE
Keyword(s):  
Glycine Max ◽  
Photosynthetic Photon Flux Density ◽  
Temperature Acclimation ◽  
Effect Of Temperature ◽  
Photon Flux ◽  
Photon Flux Density ◽  
Maturity Group ◽  
Photosynthetic Rates ◽  
Glycine Max L ◽  
Maturity Groups

The effect of temperature during growth on the photosynthetic characteristics of soybean (Glycine max [L.] Merrill) was studied using cultivars from Maturity Group 00 (Altona, Fiskeby V, Flambeau, Maple Presto, McCall) and MG VIII (Hampton 266–A, Hardee, Johnston, Kirby). In one experiment plants were grown with 950 μmol m−2s−1 photosynthetic photon flux density (PPFD) at 18, 20, 25 and 30 °C. When grown at 20 °C, MG 00 cultivars averaged significantly higher rates of photosynthesis measured at 25 °C and saturating PPFD than did MG VIII cultivars. Cultivars were also grown with a PPFD of 540 μmol m−1 at 17.5, 20.0, 22.5 and 25.0 °C. Maturity Group 00 cultivars averaged higher photosynthetic rates than MG VIII cultivars at the 20.0 and 22.5 °C growth temperatures. The other growth environments produced no significant differences between maturity groups. Photosynthetic rates differed between cultivars, but not maturity groups, after exposure to a single night with a gradual temperature decline to 8 °C. Photosynthetic rates recovered in 28 h. Two cultivars, Altona and Johnston, were grown outdoors at three times during one growing season at Beltsville, and their maximum photosynthetic rates changed depending on the temperatures during leaf development, in agreement with the data from the controlled environment studies.Key words: Soybean, Glycine max [L.] Merrill, photosynthesis, temperature, acclimation

Evaluation of the aluminium-induced root growth inhibition in isolation from low pH effects in Glycine max, Pisum sativum and Phaseolus vulgaris

1999 ◽  
Vol 26 (2) ◽  
pp. 147 ◽  
Author(s):  
Dennis B. Lazof ◽  
Michael J. Holland
Keyword(s):  
Glycine Max ◽  
Phaseolus Vulgaris ◽  
Pisum Sativum ◽  
Recovery Period ◽  
Solution Culture ◽  
Interactive Effects ◽  
Root Growth Inhibition ◽  
Ph Effects ◽  
Glycine Max L

The interaction between proton and aluminium toxicities was examined in soybean (Glycine max L.), pea (Pisum sativum L.) and bean (Phaseolus vulgaris L.). Accurate characterization of genotype Al-sensitivity in solution culture experiments, employing a continuous Al-exposure, required response definition at both growth-enhancing and growth inhibiting activities. Essentially, this involved multiple controls to account for the interactive effects. Experiments measuring growth during a recovery period in Al-free solution were more successful in distinguishing genotypic response to Al, especially in species demonstrating high H+ -sensitivity. The time, concentration and basal solution dependencies of the characteristic genotype response for the three species examined were consistent with the hypothesis that responses of genotypes may be predicated upon conditions emphasizing irreversible (cell division) effects. Cell extension effects, however, appear to be rapid, largely-reversible and often not different between differentially Al-sensitive genotypes growing in a complete nutrient solution.

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