scholarly journals EFFECT OF LEAF AGE AND SHADING ON THE MOVEMENT OF 14C THROUGH A SOYBEAN LEAF

1981 ◽  
Vol 61 (2) ◽  
pp. 205-212
Author(s):  
L. R. BENJAMIN ◽  
D. B. EGLI ◽  
J. E. LEGGETT
Keyword(s):  
Glycine Max ◽  
Perchloric Acid ◽  
Soluble Fraction ◽  
Leaf Age ◽  
Maximum Level ◽  
Initial Activity ◽  
Glycine Max L ◽  
Soybean Leaf ◽  
Soluble Fractions

Experiments were conducted to evaluate the effect of leaf age and shading on the movement of 14C assimilates through soybean (Glycine max (L.) Merr.) leaves. Leaves on plants at initial bloom and mid-podfill were pulse-labelled with 14CO2 for 2 min and the distribution of 14C in the leaf was followed for 24 h. Initially, 90% of the 14C activity was in the 80% ethanol-soluble fraction; this decreased rapidly, and by 7 h after labeling only 10% of the initial activity was in this fraction. The 14C in starch and perchloric-acid-soluble fractions increased to a maximum level (approx. 30% of initial activity) 30 min after labeling and declined slowly over the rest of the period. After 24 h, approximately 80% of the 14C had moved out of the leaf. There was no effect of leaf age on the pattern of movement of 14C through the leaf. Completely shading the plant immediately after labeling resulted in a rapid cessation (within 30 mm) of 14C movement into starch with an accompanying retention of 14C in the 80% ethanol-soluble fraction.

scholarly journals Development and soybean leaf consumption by Urbanus proteus proteus (L.)

2002 ◽  
Vol 59 (4) ◽  
pp. 661-663 ◽  
Author(s):  
Dori Edson Nava ◽  
José Roberto Postali Parra
Keyword(s):  
Glycine Max ◽  
Phaseolus Vulgaris ◽  
Control Level ◽  
Phaseolus Vulgaris L ◽  
Pupal Development ◽  
Leaf Consumption ◽  
Glycine Max L ◽  
Soybean Leaf ◽  
A Minor ◽  
Urbanus Proteus

Urbanus proteus proteus (L.) is a defoliating pest of legumes, causing damage mainly on soybean (Glycine max (L.) Merr.) and bean (Phaseolus vulgaris L.), and, being a minor pest, little is known about its bioecology. The objective of this paper was to study the larval and pupal development of the insect and the foliar consumption during its instars. Durations of 16.7; 1.1; 11.4 and 29.2 days were determined for the caterpillar, prepupal, and pupal stages, and the period from caterpillar-adult, respectively, with a total viability of 84.8%. The larval stage had five instars and the consumption of leaf area was 214.3 cm², with the consumption of the two last instars representing 96.9% of the total. Based on this value, the control level of the pest was estimated as 17 large caterpillars per sampling.

The Effects of Wounding and Mite Infestation on Soybean Leaf Lipoxygenase Levels

1989 ◽  
Vol 44 (7-8) ◽  
pp. 655-659 ◽  
Author(s):  
David F. Hildebrand ◽  
Juan G. Rodriguez ◽  
Cindy S. Legg ◽  
Grayson C. Brown ◽  
Gerhard Bookjans
Keyword(s):  
Glycine Max ◽  
Spider Mite ◽  
Fold Increase ◽  
Mite Infestation ◽  
Plant Tissues ◽  
Transcriptional Level ◽  
Twospotted Spider Mite ◽  
Glycine Max L ◽  
Soybean Leaf ◽  
Twospotted Spider

Numerous studies have demonstrated induction of proteins in plant tissues by wounding and infestations by various pests and pathogens. Lipoxygenase (LOX) is among the proteins that has been found to be induced by pathogens, but detailed information on the induction of LOX has not been reported. We have found a large (up to 10-fold) increase in LOX activity upon wounding of soybean (Glycine max L. Merr.) leaves and variable increases due to feeding of the twospotted spider mite. This induction in LOX activity was reflected in increases in amounts of both LOX protein and transcripts suggesting that the induction was at the transcriptional level. LOX activity was also found to be increased in unwounded leaves from plants with wounded leaves lower on the stem indicating that translocatable factors can cause remote induction of LOX activity.

SOYBEAN LEAF NITROGEN IN RELATION TO PHOTOSYNTHETIC RATE AND YIELD

1988 ◽  
Vol 68 (3) ◽  
pp. 793-795 ◽  
Author(s):  
B. R. BUTTERY ◽  
R. I. BUZZELL
Keyword(s):  
Glycine Max ◽  
Photosynthetic Rate ◽  
Leaf Nitrogen ◽  
Glycine Max L ◽  
Soybean Leaf ◽  
Selection For ◽  
Field Experimentation ◽  
Degree Of Association ◽  
Leaf N

Field experimentation with soybean (Glycine max (L.) Merr.) indicated that leaf N, photosynthetic rate (PA) and yield are correlated. The degree of association is not strong and heritability for leaf N is not markedly greater than for PA or yield. Therefore, selection for leaf N to improve PA and/or yield would not be an advantageous approach.Key words: Soybean, leaf N, photosynthesis, yield

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

COPPER AND ZINC INDUCED CHANGES IN SOYBEAN (Glycine max (L.) Merr.)

1970 ◽  
pp. 09
Author(s):  
K. SANKAR GANESH ◽  
P. SUNDARAMOORTHY
Keyword(s):  
Heavy Metals ◽  
Glycine Max ◽  
Aquatic Environment ◽  
Morphological Traits ◽  
Industrial Activities ◽  
Copper And Zinc ◽  
Glycine Max L ◽  
Zinc Concentrations ◽  
Induced Changes

Heavy metals are one of the most important pollutants released to the aquatic environment by the various industrial activities. The use of these wastewater for irrigation results accumulation of heavy metals in soil and plants. So, the present investigation deals with the various concentrations (0, 5, 10, 25, 50, 100, 200 and 300 mg/l) of copper and zinc on germination studies of soybean. The different concentrations of copper and zinc were used for germination studies. The seedlings were allowed to grow upto seven days. The studied morphological traits increased at 5 mg/l concentration and these parameters are gradually decreased with the increase of copper and zinc concentrations.

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