scholarly journals Enhancement of Soybean Seed Vigour as Affected by Thiamethoxam Under Stress Conditions

10.5772/19013 ◽  
2011 ◽  
Author(s):  
Ana Catarina ◽  
Joo Carlos ◽  
Leonardo Cesar ◽  
Natlia Corniani ◽  
Jos Claudionir ◽  
...  
Keyword(s):  
Soybean Seed ◽  
Stress Conditions ◽  
Seed Vigour

scholarly journals Near-infrared spectroscopy used to predict soybean seed germination and vigour

2018 ◽  
Vol 28 (3) ◽  
pp. 245-252 ◽  
Author(s):  
Maythem Al-Amery ◽  
Robert L. Geneve ◽  
Mauricio F. Sanches ◽  
Paul R. Armstrong ◽  
Elizabeth B. Maghirang ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Seed Germination ◽  
Near Infrared Spectroscopy ◽  
Near Infrared ◽  
Prediction Models ◽  
Soybean Seed ◽  
Seed Vigour ◽  
Near Infrared Spectra ◽  
High Germination ◽  
Qualitative Models

AbstractRapid, non-destructive methods for measuring seed germination and vigour are valuable. Standard germination and seed vigour were determined using 81 soybean seed lots. From these data, seed lots were separated into high and low germinating seed lots as well as high, medium and low vigour seed lots. Near-infrared spectra (950–1650 nm) were collected for training and validation samples for each seed category and used to create partial least squares (PLS) prediction models. For both germination and vigour, qualitative models provided better discrimination of high and low performing seed lots compared with quantitative models. The qualitative germination prediction models correctly identified low and high germination seed lots with an accuracy between 85.7 and 89.7%. For seed vigour, qualitative predictions for the 3-category (low, medium and high vigour) models could not adequately separate high and medium vigour seeds. However, the 2-category (low, medium plus high vigour) prediction models could correctly identify low vigour seed lots between 80 and 100% and the medium plus high vigour seed lots between 96.3 and 96.6%. To our knowledge, the current study is the first to provide near-infrared spectroscopy (NIRS)-based predictive models using agronomically meaningful cut-offs for standard germination and vigour on a commercial scale using over 80 seed lots.

Soybean seed vigour and field emergence under influence of cultivar, seed age and planting date

2007 ◽  
Vol 35 (2) ◽  
pp. 177-180 ◽  
Author(s):  
Luka Andric ◽  
Tihana Teklic ◽  
Marija Vrataric ◽  
Aleksandra Sudaric ◽  
Vinko Duvnjak
Keyword(s):  
Soybean Seed ◽  
Planting Date ◽  
Seed Vigour ◽  
Seed Age ◽  
Field Emergence

Effect of foliar application of growth activator, promoterand antioxidant on seed quality of soybean

2016 ◽  
Author(s):  
P . Kuchlan ◽  
M. K. Kuchlan ◽  
S. M. Husain
Keyword(s):  
Salicylic Acid ◽  
Seed Yield ◽  
Seed Quality ◽  
Foliar Application ◽  
Foliar Spray ◽  
Soybean Seed ◽  
Seed Vigour ◽  
Filling Stage ◽  
Seed Health

Loss of seed quality in soybean is a serious problem in tropical and subtropical region. Foliar application of salicylic acid (SA), GA3 and acetyl salicylic acid (50 ppm) at seedling and pod filling stage, K2HPO4 (2%), a-tocopherol (100 ppm) at flowering and pod filling stage was done on soybean varieties – NRC 7 and JS 335. Foliar application of SA showed positive effect on seed yield, seed health, germination and seed vigour during storage. Plant height was significantly improved by the GA3 spray in both the varieties. Significantly higher seed yield was obtained with foliar spray of a-tocopherol. Application of SA was found effective to protect plants from various diseases to get quality seed. a-Tocopherol and K2HPO4 treatment significantly reduced MDA production in seeds. a-Tocopherol application increased super oxide dismutase activity as a result the lipid peroxidation of seed during storage was significantly reduced. Application of a-tocopherol, K2HPO4 and salicylic acid improved the storage or keeping quality of soybean seed.

Germination test under water stress to evaluate soybean seed vigour

2007 ◽  
Vol 35 (1) ◽  
pp. 187-199 ◽  
Author(s):  
S.R.P. Schuab ◽  
A.L. Braccini ◽  
C.A. Scapim ◽  
J.B. França-Neto ◽  
D.K. Meschede ◽  
...  
Keyword(s):  
Water Stress ◽  
Soybean Seed ◽  
Germination Test ◽  
Seed Vigour

Influence of polymer coated KSL 441 (op) soybean seed on productivity under moisture stress conditions

2016 ◽  
Author(s):  
S. Ambika ◽  
V. Manonmani ◽  
M. Bhaskaran ◽  
S. Deepika
Keyword(s):  
Tamil Nadu ◽  
Disease Incidence ◽  
Soybean Seed ◽  
Moisture Stress ◽  
Stress Conditions ◽  
Growth And Yield ◽  
Flowering Stage ◽  
Yield Parameters ◽  
Formation Stage ◽  
Plot Design

The field experiment was carried out at Department of Seed Science and Technology, Tamil Nadu Agricultural University, Coimbatore to know the influence of polymer seed coatings on growth and productivity of soybean seed under various moisture stress conditions viz., stress at 50 % flowering stage, stress at pod formation stage and stress at both 50% flowering and pod formation stages along with normal irrigation. The experiment consisted of six seed treatments (untreated control, Genius coat 171, Genius coat 172, Arcus, Myconate and Quick roots) with three replications and was laid out in split plot design. Seeds coated with Quick roots were found to be significantly superior in growth and yield parameters viz., field emergence, plant height, took less days for first and 50 per cent flowering, less disease incidence, higher number of pods plant-1 and seed yield both under normal and moisture stress conditions.

Assessment of soybean seed vigour tests for eastern Australia

1996 ◽  
Vol 36 (1) ◽  
pp. 99
Author(s):  
M Boersma ◽  
M Law ◽  
SW Adkins
Keyword(s):  
Incubation Period ◽  
Seedling Emergence ◽  
Soybean Seed ◽  
Accelerated Aging ◽  
Field Capacity ◽  
Seed Vigour ◽  
Accelerated Aging Test ◽  
Aging Test ◽  
Eastern Australia ◽  
Controlled Deterioration

Vigour testing was undertaken on seed from 4 soybean [Glycine max (L.) Merr.] cultivars taken from field trials in eastern Australia. The seed from each cultivar exhibited moderate to good germination and a range in vigour. Vigour tests consisted of the controlled deterioration and modified versions of the accelerated aging test. Accelerated aging was carried out in 4 ways using 2 periods of incubation (76 and 96 h), with or without the seed protectant Thiram to control saprophytic fungi. Results were compared with seedling emergence from the same seed samples when planted in a controlled environment glasshouse. A combination of 2 day/night temperatures, cold (18/13�C), warm (33/28�C), and 3 soil moisture regimes, dry (-0.3 MPa), field capacity (-0.01 MPa) and saturated soil, produced a total of 6 different environments. Emergence was also recorded under a moderate daylnight temperature of 23/18�C in soil at field capacity. The standard germination test and modified accelerated aging test with a 72-h incubation period with Thiram were significantly (P<0.01) correlated with emergence from all 7 soil environments. A 96-h period of accelerated aging (with or without Thiram) tended to suppress germination and there was no correlation with emergence from most soil environments. The controlled deterioration test correlated with seedling emergence from most soil environments except for dry soil. The vigour test which gave the best indicator of performance under a range of different seedbed moisture and temperature conditions was the modified accelerated aging test using a 72-h incubation period with Thiram.

scholarly journals Priming with Humic Acid to Reverse Ageing Damage in Soybean [Glycine max (L.) Merrill.] Seeds

Agriculture ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 966
Author(s):  
Indika Weerasekara ◽  
Uma Rani Sinniah ◽  
Parameswari Namasivayam ◽  
Muhamad Hazim Nazli ◽  
Sharif Azmi Abdurahman ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Humic Acid ◽  
Germination Rate ◽  
Soybean Seed ◽  
Moisture Level ◽  
Antioxidant Enzyme Activities ◽  
Uniform Field ◽  
Seed Vigour ◽  
Soil Moisture Level ◽  
Mda Content

Soybean seed vigour declines with increase in storage duration, due to ageing, which can be alleviated through seed priming. The objective of this study was to investigate the effects of Humic acid (HA) priming on germination, vigour and seedling performance under laboratory and greenhouse conditions with two soil moisture level [50% and 80% field capacity (FC)]. Seeds stored for 12 months having 60% germination were primed either with 0.2 g/L HA solution or distilled water (hydro-primed) at 25 °C for 1, 3, 5 and 7 h. Non-primed dry seeds were used as control, giving nine treatment combinations. Various germination traits [mean germination time (MGT), final germination percentage (FG%), germination rate index (GRI), seedling emergence percentage (SEP)], mean emergence time (MET), seedling quality traits [seedling vigor index (SVI), shoot length, root length, root volume], antioxidant enzyme activities [catalase (CAT), peroxidase (POD)], lipid peroxidation [malondialdehyde (MDA)] and electrical conductivity (EC) were determined. A germination test in the laboratory was conducted as single factor (nine priming treatments), while the greenhouse experiment was conducted as two factors [2 soil moisture level (50 and 80% FC) and 9 priming treatments]. The results indicated that seeds primed with HA for 5 h was able to reinstate the CAT activities (25%), POD activities (50%) and reduced EC (51%) and MDA content (40%) compared with non-primed seeds, reduced the MET (from 4.3 to 3.5 days), increased FG% (from 62 to 71%), GRI (15.6–21.1) and SEP (from 35 to 54%) and (from 60 to 72%) at 50% FC level and 80% FC level, respectively. A strong negative correlation (r = −0.80 **) was found between MDA content and GRI, while CAT and POD activities had positive correlation with GRI r= 0.67 ** and r = 0.56 **, respectively. Thus, priming with 0.2 g/L HA for 5 h improved the vigour of minimally deteriorated soybean seeds resulting in increased emergence with more uniform field establishment.

scholarly journals EFFECT OF ELECTROSTATIC FIELD ON SOYBEAN SEED GERMINATION PARAMETARS

2021 ◽  
Vol 25 (3) ◽  
Author(s):  
Zlatica J Mamlić (Miladinov) ◽  
Gordana Dozet ◽  
Goran Mamlić ◽  
Sanja Vasiljevic ◽  
Vojin Đukić ◽  
...  
Keyword(s):  
Electrostatic Field ◽  
Soybean Seed ◽  
Seed Vigor ◽  
Vegetable Crops ◽  
Seed Vigour ◽  
Vigor Index ◽  
Vigour Index ◽  
Soybean Genotypes ◽  
Coefficient Of Velocity ◽  
Novi Sad

The aim of this study was to examine the influence of electrostatic fields on seed vigor, mean rate of germination and coefficient of velocity of germination of five soybean genotypes. Testing was conducted at the Novi Sad Institute of Field and Vegetable Crops on the seeds of five soybean varieties: Sava, NS 2024, NS 1347, NS 3127, and NS Blackstar. The seeds were exposed to different values of direct current (DC) of the following voltage: 0 V (control), 3 V, 6 V and 9 V, to which the seeds were exposed for 0 min (control), 1 min and 3 min. After exposing the seeds to the electric field, the vigour index (VI), mean rate of germination (MGR) and coefficient of velocity of germination (CVG). The results show that the effect of the electrostatic field on seed vigour, mean rate of germination and coefficient of velocity of germination depends on the genotype, voltage and exposure time. The application of DC can be a suitable method for improving vigour index (VI), mean rate of germination (MGR) and coefficient of velocity of germination (CVG). In addition, the results indicate that it is necessary to adjust the DC treatment (voltage and duration of exposure of seeds) to a particular genotype, since inadequate treatments may deteriorate the quality of seeds.             Keywords: electrostatic field, vigor index, MGR, CVG, soybean

scholarly journals Effect of seed coating material and storage containers on Germination and seedling Vigour of soybean (Glycine max L.)

2015 ◽  
Vol 12 (2) ◽  
pp. 16-24 ◽  
Author(s):  
Omvati Verma ◽  
RS Verma
Keyword(s):  
Untreated Control ◽  
Polymer Coating ◽  
Soybean Seed ◽  
Seed Coating ◽  
Coating Materials ◽  
Seedling Vigour ◽  
Seed Vigour ◽  
Vigour Index ◽  
Storage Containers ◽  
And Storage

A laboratory experiment was conducted to evaluate the effect of different seed coating materials and storage containers on germination, seedling vigour and suitability of packaging material for soybean seed. Seed of soybean varietyPS1024 was used for coating purpose with 6 coating treatments viz., T0 (control), T1 (Polymer coating i.e. Polykote @ 3 ml kg-1 of seed diluted with 5 ml of water), T2 (Flowable Thiram i.e. Royal flow 40 SC @ 2.4 ml kg-1 of seed), T3 (T1 + T2), T4 (Vitavax 200 i.e.thiram 37.5 % and carboxyl 37.5% @ 2 g kg-1 of seed and T5(T1+ T4). The coated seeds were stored in two kinds of containers i.e. jute canvas bag, high density poly ethylene (HDPE) non- laminated bag and bimonthly observation on germination and seedling vigour were recorded. After 8th month of storage, germination and vigour index in polythene bag stored seeds were significantly higher than the seed stored in cloth bag. Among seed coating treatments, maximum %germination was recorded in polymer coating @ 3 ml kg-1 followed by vitavax 200 @ 2 g kg-1of seed treatment (T5) which was significantly higher than rest of the coated treatment including untreated control seeds (T0 ). Similarly, maximum seed vigour index was observed in T5 and minimum vigor index was recorded with T0 (untreated control). DOI: http://dx.doi.org/10.3329/sja.v12i2.21913 SAARC J. Agri., 12(2): 16-24 (2014)

Changes in seed water status as characterized by NMR in developing soybean seed grown under moisture stress conditions

2014 ◽  
Vol 444 (4) ◽  
pp. 485-490 ◽  
Author(s):  
P. Krishnan ◽  
Ravender Singh ◽  
A.P.S. Verma ◽  
D.K. Joshi ◽  
Sheoraj Singh
Keyword(s):  
Water Status ◽  
Soybean Seed ◽  
Moisture Stress ◽  
Stress Conditions
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