scholarly journals Influence of Temperature on Nitrate Metabolism and Leaf Expansion in Soybean (Glycine max L. Merr.) Seedlings

1976 ◽  
Vol 58 (1) ◽  
pp. 12-16 ◽  
Author(s):  
Antonio C. Magalhães ◽  
Doyle B. Peters ◽  
Richard H. Hageman
Keyword(s):  
Glycine Max ◽  
Leaf Expansion ◽  
Influence Of Temperature ◽  
Influence Of Temperature On ◽  
Glycine Max L ◽  
Nitrate Metabolism

scholarly journals Temperature and Photoperiod Effects on Fuchsia × hybrida Morphology

1991 ◽  
Vol 116 (6) ◽  
pp. 955-960 ◽  
Author(s):  
John E. Erwin ◽  
Royal D. Heins ◽  
Roar Moe
Keyword(s):  
Leaf Area ◽  
Stem Elongation ◽  
Leaf Expansion ◽  
Internode Length ◽  
Night Temperature ◽  
Influence Of Temperature ◽  
Influence Of Temperature On ◽  
The Relationship ◽  
Absolute Basis ◽  
Short Days

Fuchsia × hybrids `Dollar Princess' plants were grown under 35 day/night temperature (DT/NT) environments ranging from 10 to 30C over 2 years. Plants were grown under short days (SD) (9-hour 15-minute photoperiod) or long days (LD) (9-hour 15-minute photoperiod plus a 4-hour night interruption) within each environment. The influence of temperature on Fuchsia stem elongation and leaf expansion was best described by the relationship or difference (DIF) between DT and NT (DT - NT) rather than actual DT and NT between 10 and 25C. Both internode length and leaf area increased linearly as DIF increased from - 15 to + 15C with DT and NT between 10 and 25C. Internode length increased 0.129 and 0.071 cm/1C increase in DIF for LD- and SD-grown plants, respectively. Individual leaf area increased 0.52 and 0.40 cm2/1C increase in DIF for LD- and SD-grown plants, respectively. DT or NT above 24C reduced stem elongation and leaf expansion, regardless of DIF. The response of stem elongation and leaf expansion to DIF was greater on a percent basis when plants were grown under SD and LD, respectively. On an absolute basis, both internode length and leaf area were greater on LD-grown plants. Branching increased as average daily temperature decreased from 25 to 12C. Photoperiod did not affect branching.

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.

Precise nitrogen topdressing upregulates nitrogen metabolism and improves soybean (Glycine max) grain yield

2019 ◽  
Vol 70 (4) ◽  
pp. 334 ◽  
Author(s):  
Hongli Zhou ◽  
Xingdong Yao ◽  
Wenbo Liu ◽  
Zhixin Wu ◽  
Qiang Zhao ◽  
...  
Keyword(s):  
Glycine Max ◽  
Grain Yield ◽  
Nitrogen Metabolism ◽  
Mature Stage ◽  
Soybean Cultivars ◽  
Glycine Max L ◽  
Nitrate Metabolism ◽  
Soybean Plants ◽  
Nitrogen Treatments ◽  
Nr Activity

Soybean (Glycine max. (L.) Merr.) is a symbiotic nitrogen-fixing crop. In order to increase grain yield, it is important to know how soybean plants respond to nitrogen topdressing for the improvement of nitrogen utilisation. We used two soybean cultivars with different grain yield potentials and applied 13 nitrogen topdressing treatments to determine optimal topdressing time and nitrogen metabolism. Nitrogen treatments included a base fertiliser and single topdressings at different times, in 10-day intervals from 10 to 120 days after emergence (DAE). Among the nitrogen treatments, the optimal times for topdressing were at 40 DAE or 90 DAE to increase grain yield, and both soybean cultivars also had higher nitrate reductase (NR) and glutamine synthetase (GS) activities with topdressing at these times. Higher expression of the NR2 gene was associated with upregulated NR activity in leaves of both cultivars at the early-mature stage. With topdressing at 90 DAE, higher GS1 expression and GS activity were found in the leaves of the higher yielding cultivar at the full-seed stage and the early-mature stage. With topdressing at 90 DAE, the higher yielding cultivar had a higher nitrate metabolism capacity at the late reproductive stages than the lower (common) yielding cultivar.

The effect of temperature on high-resolution TEM image contrast

1995 ◽  
Vol 53 ◽  
pp. 640-641
Author(s):  
T. Geipel ◽  
W. Mader ◽  
P. Pirouz
Keyword(s):  
Form Factor ◽  
Inelastic Scattering ◽  
Accurate Method ◽  
Waller Factor ◽  
Effect Of Temperature ◽  
Specimen Thickness ◽  
Influence Of Temperature ◽  
Debye Waller Factor ◽  
Influence Of Temperature On ◽  
Atomic Form Factor

Temperature affects both elastic and inelastic scattering of electrons in a crystal. The Debye-Waller factor, B, describes the influence of temperature on the elastic scattering of electrons, whereas the imaginary part of the (complex) atomic form factor, fc = fr + ifi, describes the influence of temperature on the inelastic scattering of electrons (i.e. absorption). In HRTEM simulations, two possible ways to include absorption are: (i) an approximate method in which absorption is described by a phenomenological constant, μ, i.e. fi; - μfr, with the real part of the atomic form factor, fr, obtained from Hartree-Fock calculations, (ii) a more accurate method in which the absorptive components, fi of the atomic form factor are explicitly calculated. In this contribution, the inclusion of both the Debye-Waller factor and absorption on HRTEM images of a (Oll)-oriented GaAs crystal are presented (using the EMS software.Fig. 1 shows the the amplitudes and phases of the dominant 111 beams as a function of the specimen thickness, t, for the cases when μ = 0 (i.e. no absorption, solid line) and μ = 0.1 (with absorption, dashed line).

Prevalence of the pit and antipit in the genus Glycine

1987 ◽  
Vol 45 ◽  
pp. 986-987
Author(s):  
R. W. Yaklich ◽  
E. L. Vigil ◽  
W. P. Wergin
Keyword(s):  
Amino Acids ◽  
Endoplasmic Reticulum ◽  
Glycine Max ◽  
Seed Coat ◽  
Cell Types ◽  
Abaxial Surface ◽  
Legume Seed ◽  
Initial Report ◽  
Cone Cells ◽  
Glycine Max L

The legume seed coat is the site of sucrose unloading and the metabolism of imported ureides and synthesis of amino acids for the developing embryo. The cell types directly responsible for these functions in the seed coat are not known. We recently described a convex layer of tissue on the inside surface of the soybean (Glycine max L. Merr.) seed coat that was termed “antipit” because it was in direct opposition to the concave pit on the abaxial surface of the cotyledon. Cone cells of the antipit contained numerous hypertrophied Golgi apparatus and laminated rough endoplasmic reticulum common to actively secreting cells. The initial report by Dzikowski (1936) described the morphology of the pit and antipit in G. max and found these structures in only 68 of the 169 seed accessions examined.

PENGARUH PEMBERIAN PUPUK ORGANIK CAIR ASAL LIMBAH TERHADAP SERAPAN HARA SERTA PRODUKSI TANAMAN KEDELAI DI LAHAN GAMBUT

2017 ◽  
Vol 2 (02) ◽  
pp. 204-218
Author(s):  
Hendra Saputra ◽  
Intan Sari ◽  
Muhammad Arfah
Keyword(s):  
Glycine Max ◽  
Glycine Max L

Penelitian tentang pengaruh pemberian Pupuk organik cair (POC) asal limbah tumbuhan terhadap serapan hara N dan P serta produksi tanaman kedelai (Glycine max (L) Merrill) di lahan gambut telah dilaksanakan di kampus II Unisi Fakultas Pertanian Jl. Lintas Propinsi Parit 01, Desa Pulau Palas, Kecamatan Tembilahan Hulu, Kabupaten Indragiri Hilir Propinsi Riau. Dimulai dari bulan Agustus sampai bulan Oktober 2013. Tujuan dari penelitian ini untuk mendapatkan POC asal limbah tumbuhan yang terbaik untuk serapan hara N dan P serta produksi tanaman kedelai di lahan gambut. Penelitian ini menggunakan rancangan acak kelompok (RAK) faktor tunggal dengan 7 perlakuan dan 4 ulangan, 2 tanaman dijadikan sampel. Perlakuan dosis POC limbah tanaman pisang dan POC limbah sayur kol yang diberikan yaitu 0 L/Ha, 200 L/Ha, 400 L/Ha dan 600 L/Ha. Parameter pengamatan yaitu : serapan hara N dan P pada fase awal generatif, tinggi tanaman, jumlah bintil akar, polong hampa, produksi perplot, berat 100 biji dan brangkasan kering. Data pengamatan dianalisis dengan sidik ragam (ANOVA) dan dilanjutkan dengan Uji Lanjut Tukey HSD pada taraf 5%. Berdasarkan penelitian yang telah dilaksanakan dapat disimpulkan bahwa pemberian POC asal limbah tumbuhan tidak berpengaruh nyata terhadap serapan hara N dan P, tinggi tanaman, jumlah bintil akar, polong hampa, brangkasan kering tetapi berpengaruh nyata terhadap produksi perplot dan berat 100 biji.

PERTUMBUHAN DAN HASIL SEMBILAN KULTIVAR KEDELAI (Glycine max (L.) Merrrill) DI LAHAN SAWAH

2018 ◽  
Vol 1 (2) ◽  
pp. 96
Author(s):  
Siti Wahyuni ◽  
Umi Trisnaningsih ◽  
Meilina Prasetyo
Keyword(s):  
Glycine Max ◽  
Glycine Max L
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