scholarly journals Mechanical seed processing improves the seed quality and reduces Karnal Bunt incidence in seed lots of varied wheat cultivars

2021 ◽  
Vol 13 (Spl1) ◽  
Author(s):  
Guru Dayal ◽  
Amit Kumar Sharma ◽  
Chandra Nath Mishra ◽  
Umesh Ravindra Kamble ◽  
Ravindra Kumar ◽  
...  
Keyword(s):  
Seed Quality ◽  
Karnal Bunt ◽  
Wheat Cultivars ◽  
Seed Processing

Effectiveness of Seed Processing Machinery on Seed Quality Improvement in Paddy (Oryza sativa L.)

2016 ◽  
Vol 3 (3) ◽  
Author(s):  
RABINDRA KUMAR
Keyword(s):  
Quality Improvement ◽  
Specific Gravity ◽  
Seed Quality ◽  
Oryza Sativa L ◽  
Medium Term ◽  
Seed Processing ◽  
Seed Loss ◽  
Processing Line ◽  
Gravity Separator ◽  
Term Storage

A series of seed-processing machines were used to evaluate seed quality improvement in paddy during the Kharif season 2013-14. The processing machines proved an efficient tool in producing quality seeds. The consistent and higher seed quality (germination 91.67% and physical purity 99.83%) could be achieved by efficient use of processing machines. The product and separate (reject) from individual machines were analysed to evaluate machine efficiency in separating the seed components as well as impurities from the harvested lot. The air-screen machines were found effective in removing dead seeds, whereas specific gravity separator removed abnormal seeds significantly. Gradual increase in seed quality was recorded with decrease in recovery in the processing line. Seed loss in reject port was always associated with handling of seed lots by each machine and observed only 1.30%. Specific gravity separator was found essential for the seed lot of medium-term storage or for the buffer stocking.

EFFECT OF ADDED MOISTURE ON THE QUALITY OF STORED HARD RED WINTER WHEAT SEED

1987 ◽  
Vol 67 (2) ◽  
pp. 403-408 ◽  
Author(s):  
ERROL G. RHODEN ◽  
LAVOY I. CROY
Keyword(s):  
Seed Quality ◽  
Wheat Cultivars ◽  
Moisture Uptake ◽  
Stored Grain ◽  
Water Imbibition ◽  
Key Words Wheat ◽  
Hard Red Winter Wheat ◽  
Polyethylene Bags ◽  
Red Winter Wheat

The objective of this study was to determine what effect adding moisture to stored grain would have on seed quality. Wheat cultivars were tempered to varying moisture levels (12.5, 13.5, 15.5 and 17.5%) and stored in polyethylene bags for 12 wk. Grains tempered to high moisture levels (15.5 and 17.5%) declined in quality during storage as indicated by decreased germination and increased electrolyte leakage of the seeds. Wheat tempered to 13.5% moisture for 12 wk did not show a deterioration in quality. Rates of water imbibition of wheat cultivars were also studied by sequentially weighing imbibing seeds. Cultivars differed significantly in their rates of imbibtion over 36 h, ranging from 18.5 to 24.25 mg g−1 h−1. Moisture uptake for the seven wheat cultivars can be estimated by the following equation[Formula: see text]where T = time (R2 = 0.96).Key words: Wheat (winter), seed quality, tempering, water-imbibition

scholarly journals Self-Organized Crystallization Patterns from Evaporating Droplets of Common Wheat Grain Leakages as a Potential Tool for Quality Analysis

2011 ◽  
Vol 11 ◽  
pp. 1712-1725 ◽  
Author(s):  
Maria Olga Kokornaczyk ◽  
Giovanni Dinelli ◽  
Ilaria Marotti ◽  
Stefano Benedettelli ◽  
Daniele Nani ◽  
...  
Keyword(s):  
Pattern Formation ◽  
Common Wheat ◽  
Seed Quality ◽  
Dark Field ◽  
Quality Analysis ◽  
Wheat Cultivars ◽  
Wheat Kernel ◽  
Self Organized ◽  
Complex Patterns ◽  
Pattern Forming

We studied the evaporation-induced pattern formation in droplets of common wheat kernel leakages prepared out of ancient and modern wheat cultivars as a possible tool for wheat quality analysis. The experiments showed that the substances which passed into the water during the soaking of the kernels created crystalline structures with different degrees of complexity while the droplets were evaporating. The forms ranged from spots and simple structures with single ramifications, through dendrites, up to highly organized hexagonal shapes and fractal-like structures. The patterns were observed and photographed using dark field microscopy in small magnifications. The evaluation of the patterns was performed both visually and by means of the fractal dimension analysis. From the results, it can be inferred that the wheat cultivars differed in their pattern-forming capacities. Two of the analyzed wheat cultivars showed poor pattern formation, whereas another two created well-formed and complex patterns. Additionally, the wheat cultivars were analyzed for their vigor by means of the germination test and measurement of the electrical conductivity of the grain leakages. The results showed that the more vigorous cultivars also created more complex patterns, whereas the weaker cultivars created predominantly poor forms. This observation suggests a correlation between the wheat seed quality and droplet evaporation patterns.

scholarly journals Standardization of optimum sieve size for maximizing seed quality in Amaranthus (Amaranthus tricolor L.)

2021 ◽  
Vol 13 (4) ◽  
pp. 1326-1331
Author(s):  
Pavithra M ◽  
J. Renugadevi ◽  
R. Swarna Priya ◽  
R. Vigneshwari
Keyword(s):  
Seed Weight ◽  
Seed Quality ◽  
Germination Percentage ◽  
Leafy Vegetables ◽  
Amaranthus Tricolor ◽  
Critical Function ◽  
Seed Processing ◽  
Sieve Size ◽  
Vigour Index ◽  
Mesh Sieve

Vegetables have a critical function in human health and nutritional security. Vegetables are considered an essential building block of any diet. Out of the leafy vegetables, Amaranthus is the most popular and salable vegetable consumed by people all over India. Seed processing experiment was undertaken in Amaranthus tricolor (CO 2) by using the sieves placed inside the mechanical seed shaker (Gyratory sieve shaker) to improve the quality of Amaranthus seeds. The seeds of Amaranthus were size graded with seed shaker attached with various sieve size of BSS 18 X18 (R), BSS 20 X 20 (R), BSS 22 X 22 (R) and BSP 22 X 22 (P). During processing, the machine could be adjusted for 2, 3, 4 and 5 minutes with an oscillating speed of 1440 rpm. The separated seeds were evaluated for seed quality characteristics such as seed germination percentage, shoot length, root length, dry matter production, 1000 seed weight and seed recovery percentage. The results revealed that the sieve size of BSS 22 X 22 (R=retained) mesh sieve had the better quality seeds with a maximum recovery of 67.41 g and when it is operated for a period of 5 minutes. The germination percentage was improved from 77 % to 95 % with  1000 seed weight of 73.21 mg, and the observed recovery was 56 per cent with the vigour index of 1145. Hence, BSS 22 X 22 retained mesh sieve with a duration of 5 minutes could be recommended as an optimum sieve size for grading Amaranthus seeds for improving the seed quality.

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

scholarly journals Specifics of soybean seed production and processing in 2019

2020 ◽  
Vol 24 (2) ◽  
pp. 85-88
Author(s):  
Miladin Kostić ◽  
Vojin Đukić ◽  
Aleksandar Ilić ◽  
Danka Dujović ◽  
Velimir Lončarević ◽  
...  
Keyword(s):  
Seed Germination ◽  
Moisture Content ◽  
Seed Production ◽  
Seed Quality ◽  
Soybean Seed ◽  
Seed Processing ◽  
The One ◽  
Very High

The soybean harvest in 2019 began at the end of August. The quality of the natural seed was very high. The moisture content of the harvested seeds ranged from 7.1 % to 14.1 %. Thanks to this humidity, there was no need to dry the seeds, which is very important given the fact that drying soybeans can reduce the quality. Seed germination ranged between 82 % and 96 %. It should be noted that 97 % of seeds were harvested with germination greater than 85 % while about 65 % of seeds had germination above 90 %. The weight of 1000 grains averaged about 160 g. Soybean seed processing started on time and without major problems. The purity of the processed seed was on average 99.4 %. Of the total amount of processed seeds, about 72 % of seeds had germination greater than 85 %. The achieved seed quality was better compared to the one in 2018.

scholarly journals Effects of genotype and mechanical damage during harvest on field pea (Pisum sativum L.) seed quality

Genetika ◽  
2010 ◽  
Vol 42 (3) ◽  
pp. 425-434 ◽  
Author(s):  
Djura Karagic ◽  
Slobodan Katic ◽  
Aleksandar Mikic ◽  
Milka Vujakovic ◽  
Dragan Milic ◽  
...  
Keyword(s):  
Seed Coat ◽  
Seed Weight ◽  
Seed Quality ◽  
Mechanical Damage ◽  
Seed Vigor ◽  
Field Pea ◽  
Breeding Programs ◽  
Seed Processing ◽  
Pea Seeds

Three field pea genotypes (NS Junior, Jezero and Javor) have been assessed for effects of genotype and mechanical damage during harvest on most important parameters of the physical quality of seed. Four harvest treatments were examined (hand harvest, mechanized harvest at 500, 650 and 800 rpm). After harvest, purity of harvested seed and percentages of seeds damaged by insects, seeds with cracked seed coat and broken seeds were analyzed. Highest contents of seeds with damaged seed coat (9.0%) and broken seeds (11.3%) were found in Javor, the genotype with largest seeds. After seed processing, seed vigor, germination, proportion of atypical seedlings and 1000-seed weight were determined. Lowest values of seed vigor and germination (79.8% and 84.9%, respectively) and the largest proportion of atypical seedlings (11.4%) were found in the genotype Javor. Highly significant correlations were found between seed vigor, germination and atypical seedlings on one side and 1000-seed weight on the other (r=-0.53, r=-0.51, and r=0.60, respectively). Damages that increase the portion of atypical seedlings have the largest impact on the quality of pea seeds. This characteristic is determined by the genotype, which should be kept in mind when defining objectives of field pea breeding programs.

scholarly journals Influence of corn (Zea mays L.) inbred lines seed processing on their damage

2011 ◽  
Vol 50 (No. 4) ◽  
pp. 157-161 ◽  
Author(s):  
B. Šimić ◽  
S. Popović ◽  
M. Tucak
Keyword(s):  
Seed Quality ◽  
Plant Density ◽  
Inbred Lines ◽  
Back Side ◽  
Soil Pathogens ◽  
High Positive Correlation ◽  
Corn Seed ◽  
Seed Damage ◽  
Germination Energy ◽  
Seed Processing

Manipulation of corn seed from harvest throughout processing to disinfections is associated with seed damage. Such damage causes lower germination and germination energy. Seed damage, especially in the embryo and crown, are factors that decrease germination, especially under low temperatures. Also, damaged seed is inclined to infections by soil pathogens (Aspergillus, Pythium, Penicillium), causing seed and germ rotting. In some cases, plant density is seriously reduced by infestations so that resowing is required. Seed of five corn-inbred lines differing in form and type (A: shallow and round form of the dent type MO-17, Os6-2; B: deep and uniform of the semi-flint type B-73, Os84-28 and Os87-24) were tested for their quantity and damaged spots (crown, germ, back side and belly side). Seed damage following the manipulations ranged as follows: from 3.8 to 7.2% (harvest), from 36.2 to 52.8% (husking) and from 38.4 to 54.0% (the end of processing). Also, damage of different parts of seed following their processing was as follows: from 17.8 to 29.2% (crown), from 4.1 to 6.7% (germ), from 6.3 to 9.8% (back side) and from 5.7 to 8.3% (belly side). High negative correlation (from r = –0.620 to r = –0.960) between damage of seed and seed quality (germination energy, germination) and high positive correlation between germination energy and germination were found over the investigated years and for both lines.

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