scholarly journals A Comparative Analysis of the Hybrid Maize (Zea mays L.) Seed Quality in China from 2013 to 2018

Agronomy ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 625
Author(s):  
Heqin Li ◽  
Haiwang Yue ◽  
Li Li ◽  
Chengfu Su ◽  
Xiaowen Zhang ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Seed Quality ◽  
Starch Content ◽  
Seedling Emergence ◽  
Principal Component ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Maize Seed ◽  
The Past ◽  
Hybrid Maize

In this study, a comparative analysis of seed quality indicators of 1196 hybrid maize seed samples from the main maize-producing areas in China from 2013 to 2018 was carried out. The results showed that the maize seed quality in China had changed obviously in the past six years, and was mainly as follows: The percentage of samples with coated seed in 2015–2018 was higher than 62.8% in 2013 and all exceeded 97%; the sample rate of packaging according to seed number was from 24.5% in 2013 to 58.6% in 2018, and the percentage of samples which met the prescribed quality standards was from 89.2% in 2013 to 98.4% in 2018. Principal component analysis indicated that standard germination energy (SGE), standard germination percentage (SGP), cold test germination percentage (CTGP), accelerated aging test germination percentage (AATGP), and mean field seedling emergence (FSE) were the primary predictors of seed germination and seedling emergence. Meanwhile, combining other statistical methods, regression models of SGE, SGP, CTGP, and AATGP were established to predict the field seedling emergence. Furthermore, seed bulk density and total starch content were correlated with seed vigor, which needs to be further studied. This study offered a theoretical basis and data support to better understand the changes of maize quality in China over the past six years, and provided an important reference to further improve the maize seed quality in the future.

Effect of seeding date on canola seed quality and seed vigour

2004 ◽  
Vol 84 (2) ◽  
pp. 463-471 ◽  
Author(s):  
L. V. Gusta ◽  
E. N. Johnson ◽  
N. T. Nesbitt ◽  
K. J. Kirkland
Keyword(s):  
Brassica Napus ◽  
Seed Quality ◽  
Seedling Emergence ◽  
Germination Percentage ◽  
Canola Seed ◽  
Higher Plant ◽  
Seedling Vigour ◽  
Seed Vigour ◽  
Seeding Date ◽  
The Impact

Seedling vigour is a key critical component to produce well-established canola (Brassica napus) seedlings under less than ideal conditions in western Canada. Our objective was to determine if seed lots from late October (fall) or early spring (April) seeding dates improve seed vigour relative to mid-May (May) seeding dates. We compared seed size, seed maturity, germination percentage, and seedling emergence under controlled-environment conditions from six seed lots obtained from fall-sown (1997, 1998), April-sown (1998, 1999) and May-sown canola (1998, 1999) cv. Quest. On average, 80% of fall-derived seed for both years was larger than 1.7 mm compared to only 32% for May-derived canola seed. April-derived seed was intermediate. Fall and April derived seed were considered 40% mature compared to 16% for May-derived seed. In germination tests at 8°C, May derived seed germinated and emerged slower with a lower total germination percentage compared to falland April-derived seed lots. Priming reduced differences in emergence between the seed lots. Field studies at Scott, SK, sown in the fall of 1999 and 2000, and in early May of 2000 demonstrated that seed derived from fall- and April-sown canola produced higher plant densities, higher biomass at bolting, and higher seed yield than seed derived from May-sown canola. Yield was 10 to 45% less from seed derived from May-sown canola than seed derived from fall- and April-sown canola. This study established the impact of seeding date on seed quality and vigour, which in turn affected emergence, seedling vigour and yield. Also, seed vigour slowly declined within 1 yr, primarily with seed derived from the May-sown canola. Key words: Canola, Brassica napus, vigour (seed), seeding (fall), emergence, yield (quality)

scholarly journals Effect of drying, pelliculation and storage on the physiological quality of eggplant seeds

2014 ◽  
Vol 36 (2) ◽  
pp. 240-245 ◽  
Author(s):  
Natassia Zamariola ◽  
João Almir Oliveira ◽  
Luiz Antônio Augusto Gomes ◽  
Michelle Fonseca Jácome ◽  
Leandro Vilela Reis
Keyword(s):  
Seed Quality ◽  
Seedling Emergence ◽  
Film Coating ◽  
Germination Percentage ◽  
Hybrid Seeds ◽  
Physiological Quality ◽  
Forced Air ◽  
Air Circulation ◽  
And Storage

The use of methods and technologies such as drying and film coating can bring significant contributions to the farmer. This experiment was conducted in order to evaluate the effect of drying and film coating on the physiological quality of eggplant seeds during storage. Hybrid seeds UGA MS1 produced by the company Hortiagro - Ijaci, MG were used. Seeds were subjected to two types of drying: slow (room temperature) and quick (oven with forced air circulation at 35 ºC). The chemical treatment was performed with the Captan product at a dose of 250 grams per 100 kilograms of seed and for the recoating were used three doses of polymer: (0, 3 and 6 mL.kg-1 of seeds). The physiological quality of seeds was evaluated every three months until reaching the period of nine months using germination test, seedling emergence test and seedling establishment. There is a reduction of physiological seed quality during the storage. The slow drying of eggplant seeds results in better quality seeds. The use of polymer reduces the germination percentage, germination speed index and the percentage of seedling emergence.

scholarly journals Effect of Seed Priming on Germination Properties and Seedling Establishment of Cowpea (Vigna sinensis)

2011 ◽  
Vol 3 (4) ◽  
pp. 113-116 ◽  
Author(s):  
Hamdollah ESKANDARI ◽  
Kamyar KAZEMI
Keyword(s):  
Laboratory Tests ◽  
Low Cost ◽  
Germination Rate ◽  
Seedling Emergence ◽  
Laboratory Data ◽  
Seed Priming ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Seedling Vigor ◽  
Contributing Factors

Early emergence and stand establishment of cowpea are considered to be the most important yield-contributing factors in rainfed areas. Laboratory tests and afield experiment were conducted in RCB design in 2011 at a research farm in Ramhormoz, Iran, to evaluate the effects of hydropriming (8, 12 and 16 hours duration) and halo priming (solutions of 1.5% KNO3 and 0.8% NaCl) on seedling vigor and field establishment of cowpea. Analysis of variance of laboratory data showed that hydropriming significantly improved germination rate, seed vigor index, and seedling dry weights. However, germination percentage for seeds primed with KNO3 and non-primed seeds were statistically similar, but higher than those for NaCl priming. Overall, hydropriming treatment was comparatively superior in the laboratory tests. Invigoration of cowpea seeds by hydropriming and NaCl priming resulted in higher seedling emergence and establishment in the field, compared to control and seed priming with KNO3. Seedling emergence rate was also enhanced by priming seeds with water, suggesting that hydropriming is a simple, low cost and environmentally friendly technique for improving seed and seedling vigor of cowpea.

scholarly journals Correlation between vigor by accelerated aging at pre-sowing and soybean seedling emergence in the field

2021 ◽  
Vol 42 (2) ◽  
pp. 455-470
Author(s):  
Vanderléia Mathias ◽  
◽  
Cileide Maria Medeiros Coelho ◽  
Keyword(s):  
Exposure Time ◽  
Seedling Emergence ◽  
Soybean Seed ◽  
Accelerated Aging ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Growing Seasons ◽  
Accelerated Aging Test ◽  
Physiological Quality ◽  
Field Emergence

Although the accelerated aging test is widely used to determine seed vigor, there are methodological variations in seed exposure time at 41 °C. Therefore, the objective was to indicate the most appropriate seed exposure time to segregate lots that also exhibits a correlation with seedling emergence in the field, and establish vigor levels using the aforementioned test. Soybean seed samples were collected at pre-sowing, representing 100 lots in the 2016/2017 growing season and 125 lots in the 2017/2018 season from different warehouses in 4 regions of Santa Catarina state (SC). Physiological quality was evaluated by germination, accelerated aging (24 and 48 h at 41 °C) and field emergence tests. The results were submitted to descriptive statistical analysis and Pearson’s correlation analysis (p < 0.05). The rank sum index, associated with the Scott-Knott clustering method, was used to classify physiological quality. The average germination percentage was 90 and 91% in the 2016/2017 and 2017/2018 growing seasons, respectively. Vigor obtained an average of 86 (2016/2017) and 85% (2017/2018), when seeds were submitted to accelerated aging for 48 h, and 89% (both seasons) for 24 h. In regard to field emergence, the average was 85 and 80% in the 2016/2017 and 2017/2018 growing seasons, respectively. Considering the 225 lots, the greatest correlation with field emergence was observed in vigor - 48 h (r = 0.71 p < 0.05). Rank sum classification made it possible to establish vigor-based categories, whereby batches with over 85% vigor by 48-h accelerated aging were classified as high vigor, 70 to 84% medium vigor, and under 70% low vigor.

scholarly journals Nutritional Characteristics and Seed Germination Improvement of the Forage Shrub Retama sphaerocarpa (L.) Boiss

2020 ◽  
Vol 69 (3-4) ◽  
pp. 53-60
Author(s):  
Abdenour Kheloufi ◽  
Lahouaria Mounia Mansouri ◽  
Mohamed Djelilate ◽  
Mourad Touka ◽  
Abdallah Chater ◽  
...  
Keyword(s):  
Seed Germination ◽  
Sulphuric Acid ◽  
Nutritive Value ◽  
Seedling Emergence ◽  
Principal Component ◽  
Germination Percentage ◽  
Neutral Detergent Fiber ◽  
Retama Sphaerocarpa ◽  
Seedling Length ◽  
Germination Ability

SummaryRetama sphaerocarpa shrubs form populations that can be an important forage resource during the dry season when pasture shortages are common in certain arid and semi-arid Mediterranean basin regions. The leaves of R. sphaerocarpa were analyzed for dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF) and acid detergent lignin (ADL) contents. Leaves were also analyzed for the concentration of macro- (P, K, Ca and Mg) and microelements (Mn, Zn, Fe, and Na). According to the contents of CP, NDF, ADF and ADL in the leaves examined, this species could strike an appropriate balance between available feed ingredients for daily nutritional needs of animals. The contents of Ca, K, Na, P, Fe, Mg, and Zn in Retama sphaerocarpa shrubs were found to be high, compared to a number of other forage shrub species. Conversely, the rate of natural regeneration of this shrub in situ was estimated at 2-5%. R. sphaerocarpa seeds are affected by seed coat dormancy that prevents seed germination under natural conditions. The seed germination was assessed at a laboratory after the chemical scarification of seeds by concentrated sulphuric acid in the duration range of 0 min and 240 min. The principal component analysis of data related to the germination ability and seedling emergence showed that the best pretreatment was 120 min immersion in sulphuric acid at 25°C (± 2°C), resulting in 86% of the final germination percentage (FGP) and 14.6 cm of the seedling length (SL). According to the results obtained, this species could be considered a ruminant feed of great nutritive value when drought decreases grazing herbaceous biomass yields. These results should encourage farmers and foresters to integrate R. sphaerocarpa into their planting programs.

scholarly journals Influence of corn (Zea mays L) seed processing with a locally produced sheller on seed quality and their damage

2013 ◽  
Vol 1 (2) ◽  
pp. 67-70
Author(s):  
Pratima Pandey ◽  
Jwala Bajrachrya ◽  
S. Pokharel
Keyword(s):  
Zea Mays ◽  
Seed Quality ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Tetrazolium Salt ◽  
Seed Moisture Content ◽  
Seed Processing ◽  
Root And Shoot Length ◽  
Quality Assessments ◽  
Maize Kernels

Maize (Zea mays dis.L.) is one of the most important staple crops in the world. Sindhupalchok, Kavre and Nuwakot were the three districts selected for the maize CBSP groups under the respective Agriculture Development Offices identified by CDD for the present study. Altogether 2x6x3 samples for the study were collected. Seed damage as broken seeds, damages on embryo, seed quality assessments like seed moisture content, pure seed percentage, seed vigor measured by root and shoot length, seed germination, and embryo damages were carried in seed testing laboratory in Seed Science & Technology Division (SSTD) Khumaltar following the ISTA Rules, 2007. For the embryo damage test, tetrazolium salt test (TZ) was conducted following the procedures prescribed for maize seed in ISTA Rules, 2007. All the samples possessed of 99 % of pure seed. It ranged from 99.51 % in Nuwakot to 99.96 % in Kavre for samples using corn sheller. They were found within the standards for pure seed and were of acceptable range. The corn sheller was found as efficient as that of hand shelling. There was not found the effect on the quality of seed that they were within the standard values. The germination percentage decreased from initial 96 to 85 (Kavre); 94 to 87 (Sindhupalchwok) and 91 to 83 (Nuwakot). This study concludes that the corn sheller techniques offer Wooden corn sheller is a simple but traditional device made locally for shelling the maize kernels and distributed to Community based seed production (CBSP) farmers contribute to minimizing the impacts of hand sheller on agricultural systems.DOI: http://dx.doi.org/10.3126/ijasbt.v1i2.8198 Int J Appl Sci Biotechnol, Vol. 1(2): 68-71

Joint optimization of irrigation and planting pattern to guarantee seed quality, maximize yield, and save water in hybrid maize seed production

2020 ◽  
Vol 113 ◽  
pp. 125970 ◽  
Author(s):  
Jintao Wang ◽  
Shanshan Guo ◽  
Shaozhong Kang ◽  
Yufeng Wang ◽  
Taisheng Du ◽  
...  
Keyword(s):  
Seed Production ◽  
Seed Quality ◽  
Joint Optimization ◽  
Maize Seed ◽  
Planting Pattern ◽  
Hybrid Maize

scholarly journals Muskmelon seed priming in relation to seed vigor

2004 ◽  
Vol 61 (1) ◽  
pp. 114-117 ◽  
Author(s):  
Warley Marcos Nascimento ◽  
Fernando Antônio Souza de Aragão
Keyword(s):  
Low Temperature ◽  
Interaction Effect ◽  
Cucumis Melo ◽  
Seed Quality ◽  
Germination Rate ◽  
Seed Priming ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Cucumis Melo L ◽  
Aged Seeds

A number of important factors may affect seed priming response, including seed quality. Effects of seed vigor on seed priming response were investigated using seed lots of two muskmelon (Cucumis melo L.) cultivars. Seeds of muskmelon, cvs. Mission and Top Net SR were artificially aged at 43°C for 0, 20 and 40 hours. Seeds were primed for six days in darkness at 25°C in KNO3 (0.35 mol L-1) aerated solution. Aged seeds germinated poorly at 17°C. Priming increased germination rate at 17 and 25°C and germination percentage at 17°C. An interaction effect on germination performance between vigor and priming was observed, especially at low temperature. Priming increased germination performance in seeds of low vigor, and the response was cultivar dependent.

scholarly journals Seedling image analysis and traditional tests to evaluate onion seed vigor

2017 ◽  
Vol 39 (3) ◽  
pp. 216-223 ◽  
Author(s):  
Nayara Roberto Gonçalves ◽  
Silvio Moure Cicero ◽  
Haynna Fernandes Abud
Keyword(s):  
Electrical Conductivity ◽  
Image Analysis ◽  
Imaging System ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Germination Percentage ◽  
Seed Vigor ◽  
Seedling Length ◽  
Onion Seed ◽  
Emergence Percentage

Abstract: The aim of this study was to verify the possibility of using computerized seedling image analysis to detect differences in vigor among onion seed lots and to compare this analysis with traditional vigor tests. We used five seed lots of two onion cultivars, Bella Catarina and Bella Vista. The Seed Vigor Imaging System (SVIS®) software was used to process the seedling images and assess seedling length and vigor through seedling uniformity and growth indexes. These determinations were compared to traditional tests used to evaluate onion seed vigor: germination percentage and first germination count, seedling emergence percentage and emergence speed, accelerated aging, and electrical conductivity. Results showed that vigor differences among onion seed lots can be identified using the SVIS® in a manner similar to traditional vigor tests; assessments should be performed at five days after sowing.

scholarly journals Improved assessment of wheat seeds vigor

2012 ◽  
Vol 36 (6) ◽  
pp. 608-614 ◽  
Author(s):  
Tereza Cristina de Carvalho ◽  
Francisco Carlos Krzyzanowski ◽  
Osvaldo de Castro Ohlson ◽  
Maristela Panobianco
Keyword(s):  
Moisture Content ◽  
Filter Paper ◽  
Seed Quality ◽  
Seedling Emergence ◽  
Accelerated Aging ◽  
Seed Vigor ◽  
Wheat Seed ◽  
Efficient Procedure ◽  
Tetrazolium Test ◽  
Wheat Seeds

The tetrazolium test is widely used for seed vigor assessment of various plant species. For wheat, however, there is no methodology specifically recommended. This study aimed at determining an efficient procedure to evaluate vigor of wheat seeds by this test; besides allowing the establishment of seed quality classes. Thus, four different wheat seed lots were assessed by determining the moisture content and through tests of germination, accelerated aging, and field seedling emergence. The following methodologies were assessed: 1) longitudinal bisection of seed, with subsequent placement of the two halves on filter paper moistened with a 1.0% tetrazolium solution, at 30º C, for 2 h; 2) longitudinal bisection, with subsequent immersion of one seed half into a 1.0% tetrazolium solution, at 30º C, for 3 h; and 3) longitudinal bisection, with subsequent immersion of one seed half into a 0.075% tetrazolium solution, at 40º C, for 2 h. It was concluded that the tetrazolium test is more efficient in evaluating wheat seed vigor when performed with immersion of one half of the seed into a 0.075% tetrazolium solution (40º C, for 2 h) or a 0.1% tetrazolium solution (30º C, during 3 h); allowing to sort seeds into four quality classes.

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