Extension of shelf life of cotton (Gossypium hirsutum L.) seeds through polymer coating under ambient storage condition

2015 ◽  
Vol 49 (5) ◽  
Author(s):  
K. Rathinavel
Keyword(s):  
Gossypium Hirsutum ◽  
Polymer Coating ◽  
Seed Quality ◽  
Seed Viability ◽  
Storage Condition ◽  
Ambient Condition ◽  
Seed Infection ◽  
Seedling Vigour ◽  
Percentage Loss ◽  
Ambient Storage

Cotton Research, Regional Station, Coimbatore, India revealed that seeds coated with polymer “polycote” or “ polyloc” @ 3 ml kg<sup>−1</sup> + thiram @ 2.5 g kg<sup>−1</sup>+ super red @ 5 ml kg<sup>−1</sup> + cruiser @ 5 g kg<sup>−1</sup> packed in polythene bag (700 gauge ) and stored at ambient condition for 26 months was found superior in preserving seed quality <italic>viz</italic>., seed viability expressed in terms of germination and seedling vigour over untreated seeds. The percentage loss of viability was less rapid and at 26<sup>th</sup> month of storage it was 70% where as in control 56%. Less seed infection, high seedling vigour and field emergence was recorded in coated seeds.

Studies on Seed Longevity of Pigeonpea (Cajanus cajan L.) and Chickpea (Cicer arietinum L.) under Ambient Storage Condition

2021 ◽  
Author(s):  
Ravindra Kumar ◽  
Anuja Gupta ◽  
Kumkum Verma
Keyword(s):  
Cicer Arietinum ◽  
Cajanus Cajan ◽  
Seed Quality ◽  
Seed Viability ◽  
Storage Period ◽  
Storage Condition ◽  
Quality Parameters ◽  
Cicer Arietinum L ◽  
Ambient Storage ◽  
Vigour Index

Background: Pulses are very crucial to meet the requirements of dietary proteins in the human diet especially for the predominantly vegetarian population in India. Pigeonpea [Cajanus cajan (L.) Millsp.] and chickpea (Cicer arietinum L.) are important pulses grown in India. The seeds of these crops are highly vulnerable to various microorganisms, both in the field and during storage, which play an important role in reducing the seed viability, germination and vigour causing considerable loss in yield and quality. There is no suitable recommendation available to maintain seed quality during storage of pulses, hence present study was undertaken. Methods: Seeds of pigeonpea and chickpea were treated with Captan and Carbendazim 50% WP fungicides @ 2.0 g/Kg of seed and stored under ambient condition. The samples were drawn at three months interval to assess the effect of storage on seed quality parameters. The vigour index I, seed germination and speed of germination of these seed samples were determined using ISTA rules. The detection of seed mycoflora in pigeonpea and chickpea seed samples was carried out by the blotter test as recommended by the International Seed Testing Association. Result: Total sixteen fungal species were recorded on stored seeds. Maximum incidence of Aspergillus fumigatus (19.83%), A. flavus (14.88%), A. niger (12.40%), Alternaria alternata (11.57%), Fusarium oxysporum (8.26%), Rhizopus stolonifer (7.44%) and Penicillium notatum (5.79%) were recorded on untreated seed of pigeonpea cv. P. 2001 after 18 months of storage. The per cent germination, speed of germination and vigour index of the stored seeds decreased with the increase in the storage period whereas the total number of fungi increased with the storage period, irrespective of treatments. Among the tested cultivars, germination in pigeonpea (cv. P. 991) remained above IMSCS ( greater than 75%) upto 18 months of storage under ambient storage condition. However, the germination of pigeonpea cv. P. 2001 seed could be maintained above IMSCS ( greater than 75%) up to 12 months only. In chickpea (local cultivar) seed, the germination remained above IMSCS ( greater than 85%) up to 9 months only under ambient storage, however seed treatment with either Captan or Carbendazim could prolong the longevity upto 12 months of storage.

scholarly journals Aplikasi Teknologi Seed Coated dan Seed Delinted pada Benih Kapas (Gossypium hirsutum L.)

2019 ◽  
Vol 11 (1) ◽  
pp. 16
Author(s):  
Taufiq Hidayat RS ◽  
Nurindah Nurindah ◽  
Anik Herawati
Keyword(s):  
Gossypium Hirsutum ◽  
Seed Quality ◽  
Block Design ◽  
Seed Viability ◽  
Environmentally Friendly ◽  
Maximum Growth ◽  
Seed Coating ◽  
Seed Treatments ◽  
Gossypium Hirsutum L ◽  
Arabic Gum

<p><em>Seed coated</em> merupakan teknologi pelapisan benih dengan bahan tertentu untuk mempertahankan mutu benih dan membuat bentuk benih lebih teratur. Prosesing benih kapas saat ini masih menggunakan bahan kimia seperti asam sulfat (<em>seed delinted</em>) untuk menghilangkan kabu-kabu (<em>linter</em>) yang masih menempel pada biji setelah proses pemisahan serat dan biji. <em>Seed delinted</em> memungkinkan terjadinya kerusakan kulit hingga lembaga biji dan dapat menimbulkan masalah lingkungan dari limbah yang dihasilkan dalam proses tersebut. Penelitian ini bertujuan untuk menguji pengaruh perlakuan benih pada tiga jenis varietas terhadap viabilitas benih kapas. Penelitian ini menggunakan Rancangan Faktorial dalam RAK. Faktor Pertama terdiri atas beberapa perlakuan benih yaitu benih berkabu, benih <em>delinted</em>,<em> coated</em> dengan tapioka dan kaolin serta <em>coated </em>dengan<em> arabic gum</em>. Sedangkan, faktor kedua terdiri atas varietas kapas yaitu Kanesia 10, Kanesia 18 dan Kanesia 19. Hasil penelitian menunjukkan bahwa interaksi antara perlakuan benih dengan varietas kapas berpengaruh nyata untuk parameter panjang radikula dan menghasilkan koefesien keragaman mencapai 9.85%. Perlakuan benih <em>coated</em> dengan bahan <em>arabic gum</em> menunjukkan hasil yang terbaik untuk semua parameter pengamatan. Sedangkan, varietas Kanesia 10 menunjukkan persentase keserempakan tumbuh, persentase daya berkecambah, dan persentase potensi tumbuh maksimum terbaik masing-masing 92.25%, 96.25%, dan 98.00%. Perlakuan benih dengan teknologi <em>seed coated</em> menggunakan <em>arabic gum</em> pada Varietas Kanesia 10 dapat menunjukkan persentase viabilitas benih kapas terbaik.</p><p> </p><p><strong>Effect of Seed Coating on the Seeds Viability of Three Cotton Varieties ( Gossypium hirsutum L.) </strong></p><p><br />Seed coating technology with certain materials is objected to maintain seed quality and to make seed shapes more regular. Currently, cotton seeds processing is using chemicals such as sulfuric acid (acid seed delinted) to remove the linter which is still attached to the seeds after the separation of fibers and seeds. Acid seed delinting could causing damage on the seed skin as well as to the seed embryo and also cause environmental problems from the waste produced in the process. Seed coated technology has the prospect to be applied in the process of cotton seeding, so the process becomes environmentally friendly. This study aims to evaluate the effect of seed coating treatment on three cotton varieties on the seed viability. This study uses Randomized Block Design Factorial. The first factor consisted of four seed treatments namely fuzzy seed (control), seed delinted, seed coated with tapioca and kaolin and seed coated with arabic gum. The second factor were cotton varieties namely Kanesia 10, Kanesia 18, and Kanesia 19. The results showed that the interaction between seed treatments with cotton varieties significantly affected the radicular length parameters and produced a coefficient of varians 9.85%. Seed coated with arabic gum showed the best results for all observation parameters. Kanesia 10 showed the best of growing simultaneity, germination, and the potential maximum growth by 92%, 96%, and 98%, recpectively. The cotton cotton seed coated with arabic gum is prospective to be applied in the cotton seeding process as an alternative to the acid delinting technique that is not environmentally friendly. </p>

scholarly journals Effect of Fruit Harvest Time and Fermentation Methods on Seed Viability and Seedling Vigour in Oleaginous Citrullus lanatus

2021 ◽  
pp. 17-31
Author(s):  
Koffi Bertin Yao ◽  
Manéhonon Martine Beugré ◽  
Koffi Adjoumani ◽  
N’Goran Delphine Koffi ◽  
Tanoh Hilaire Kouakou
Keyword(s):  
Seed Quality ◽  
Citrullus Lanatus ◽  
Seed Viability ◽  
Ambient Air ◽  
Seedling Vigor ◽  
Harvest Time ◽  
Positive Interaction ◽  
Seedling Vigour ◽  
Fermentation Method ◽  
Plastic Bag

Aims: In an attempt to improve the yields of Citrullus lanatus’s wlêwlê oilseed cultivar, generally low due to the lack of good germination seeds, the effect of fruit age at harvest and fermentation methods were studied. The present study is a contribution to the improvement the African oleaginous Cucurbits seed production system by optimizing the date of harvest combined to seed fermentation methods through enhancement of seed germination and seedling vigor. Study Design: Seedling vigor was evaluated on farm trial using five completely randomized blocks represented by seedbeds constituting each, one replication. Place and Duration of Study: The trials were carried out from July to December 2020, at the experimental farm of the Nangui Abrogoua University in the district of Abidjan, southern of Côte d'Ivoire between 5°17' and 5°31' North latitude and between 3°45' and 4°31' West longitude. Methodology: Fruits from grown plants were harvested at five different times  20, 25, 30, 35 and 40 days after anthesis (DAA)] and seeds fermented following four methods  fermentation at ambient air (SFA); fermentation in a plastic bag exposed at ambient air (SFB); fermentation in plastic bag buried in 30 cm depth (SFD) and control or non-fermented (NF)]. Seeds from these 20 treatments (5 harvest time × 4 fermentation methods) were sown for viability tests in laboratory and seedling vigor in the field. Results: Analysis of variance (ANOVA) showed that delaying harvest time (from 20 to 40 DAA) significantly (P < .001) improved fruit weight (from 512.20 to 760.50 g) and its seed content (from 71.75 to 230.70 seeds/fruit), seed size (length: 10.69 to 11.42 mm and width: 5.31 to 5.90 mm) and weight (5.16 to 6.37 g) as well as their viability (from 67.75 to 89.50 %). Moreover, in spite of facilitating seed extraction, all three fermentation methods (SFA, SFB and SFD) significantly improved seed viability and seedling vigor compared to control (NF) seeds. The highest agronomic performance (seed viability and produced seedling vigor), was obtained with fermentation under closed and deep confinement (SFD), followed by the closed confinement (SFB) and then by the open environment (SFA). Positive interaction (harvest time × fermentation method) revealed that the best performance was achieved with later harvested seeds (40 DAA) and closed fermented seeds (SFD) which could provide a better seed quality. Conclusion: Agronomic performances (viability and vigor) are influenced by both harvest date and fermentation method. Late harvesting of the fruit (40 DAA) and fermentation in a very confined deep soil condition (SFD) ensures the production of high germination quality seeds.

scholarly journals Seed polymer coating with Zn and Fe nanoparticles: An innovative seed quality enhancement technique in pigeonpea

2016 ◽  
Vol 8 (1) ◽  
pp. 445-450 ◽  
Author(s):  
Pradeep Korishettar ◽  
S. N. Vasudevan ◽  
N. M. Shakuntala ◽  
S. R. Doddagoudar ◽  
Sharanagouda Hiregoudar ◽  
...  
Keyword(s):  
Polymer Coating ◽  
Seed Quality ◽  
Dry Weight ◽  
Inhibitory Effect ◽  
Seedling Vigour ◽  
Beneficial Effects ◽  
Seedling Length ◽  
Fe Nanoparticles ◽  
Vigour Index ◽  
And Control

A laboratory study was undertaken to know the effect of seed polymer coating with Zn and Fe nanoparticles (NPs) at different concentration (10, 25, 50, 100, 250, 500, 750 and 1000 ppm) in pigeonpea at Department of Seed Science and Technology, UAS, Raichur. Among the treatments seed polymer coating with Zn NPs at 750 ppm recorded significantly higher seed germination (96.00 %), seedling length (26.63 cm), seedling dry weight (85.00 mg), speed of germination (32.95), field emergence (89.67 %), seedling vigour index (2556), dehydrogenase activity (0.975 OD value) and α-amylase activity (25.67 mm) and lowest abnormal seedlings (2.50 %) over their bulk forms and control followed by Fe and Zn NPs at 500 ppm. However, in contrast to beneficial effects, these NPs also shown inhibitory effect on germination and seedling growth at higher concentration (nano Zn >750 ppm and nano Fe > 500 ppm). Hence, from the results it is concluded that Zn NPs at 750 ppm can be used to enhance quality of the pigeonpea seeds.

scholarly journals Organic Seed Hydration-Dehydration Techniques Improve Seedling Quality of Organic Tomatoes

2016 ◽  
Vol 44 (2) ◽  
pp. 399-403 ◽  
Author(s):  
H. Özkan SIVRITEPE ◽  
Nuray SIVRITEPE
Keyword(s):  
Seed Quality ◽  
Germination Rate ◽  
Seed Viability ◽  
Dry Weight ◽  
Seed Moisture Content ◽  
Seedling Vigour ◽  
Seed Vigour ◽  
Tomato Production ◽  
Tomato Seeds ◽  
And Performance

The use of pre-sowing organic hydration-dehydration techniques to improve quality and performance of organic seeds has already been lacking in the literature as well as in the organic farming regulations of different countries. Hence, this study was conducted to investigate the effects of organic hydration (hydropriming and organic priming) and dehydration treatments on germination and early seedling growth in organic tomato seeds. Following each priming treatment, the seeds were surface dried and divided into two sub-groups. First part of the seeds was taken to the germination tests immediately while the second part was dried back until the original seed moisture content was reached before the germination tests were set up. Then, responses of organic tomato seeds to organic hydration and dehydration treatments were observed on the bases of viability (normal germination rate) and different vigour parameters such as mean germination time, germination index, seedling dry weight and seedling vigour index. When the overall data were assessed, the best results were obtained from the hydropriming and organic priming with 250 ppm seaweed extract solution followed by both dehydration treatments in organic tomato seeds. Consequently, these results suggested that hydropriming and organic priming could be used both in seed and seedling industries to improve organic seed quality and performance. Furthermore, the results indicated that the addition of these organic hydration-dehydration protocols to the current procedures of the regulations of organic tomato production could be a useful strategy.Key words: Lycopersicon esculentum, Ascophyllum nodosum, hydropriming, organic priming, seed viability, seed vigour

scholarly journals Effect of seed polymer coating with micronutrients and foliar spray on seed quality parameters of resultant seed in chickpea (Cicer arietinum L.)

2016 ◽  
Vol 8 (3) ◽  
pp. 1623-1628
Author(s):  
Pavan Shinde ◽  
S. R. Doddagoudar ◽  
S. N. Vasudevan
Keyword(s):  
Polymer Coating ◽  
Seed Quality ◽  
Foliar Spray ◽  
Dry Weight ◽  
Quality Parameters ◽  
Ammonium Molybdate ◽  
Seedling Vigour ◽  
Vigour Index ◽  
Technology College ◽  
And Control

A laboratory experiment was carried out in the Department of Seed Science and Technology, College of Agriculture, University of Agricultural Sciences, Raichur to study the effect of seed polymer coating with micronutrients and foliar spray on the resultant seed quality parameters of chickpea. Among the seventeen different treatments, resultant chickpea seeds obtained from treatment polymer coated seeds (each@ 6 ml/kg of seed) along with the combination of micronutrients viz.,ZnSO4 + Boron + Ammonium molybdate + FeSO4 ( each @ 2 g/kg of seed ) and two foliar sprays (0.5 % + 0.2 % + 0.1% + 0.5 %, respectively, except ZnSO4 and FeSO4 in EDTA form) at an interval of 10 days during flowering stage (50 and 60 days after sowing) recorded significantly highest hundred seed weight (25.9 g), germination (97.00 %), speed of germination (18.50), shoot length (8.43 cm), root length (19.80 cm), seedling dry weight (43.30 mg) and seedling vigour index (2738) compared to all other treatments and control (23.6 g, 92.05 %, 13.74, 5.48 cm, 16.30 cm, 34.00 mg and 2004, respectively) and hence above treatment combinations can be used in order to produce good quality seeds.

scholarly journals Infusing Microbial Consortia on Seed Quality and Seedling Vigour in Pearlmillet [Pennisetum glaucum (L.) R. Br.]

2020 ◽  
pp. 43-55
Author(s):  
K. Raja ◽  
R. Anandham
Keyword(s):  
Seed Treatment ◽  
Microbial Population ◽  
Seed Quality ◽  
Pennisetum Glaucum ◽  
Seed Viability ◽  
Microbial Consortia ◽  
Plant Growth Promoting Bacteria ◽  
Seedling Vigour ◽  
Facultative Methylotroph ◽  
Microbial Cultures

Aim: Seed treatment with Plant Growth Promoting Bacteria (PGPB) is considered to be safe for seed and environment and ecologically sound. To ensure the benefits of the PGPB, studies were conducted in pearlmillet by treating with liquid microbial cultures for enhancing seed germination and seedling vigour. Methods: The pearlmillet seeds were infused with different concentrations of liquid microbial cultures and their consortia. Also, the bioinoculant infused seeds were treated with chemicals to assess their effect on the microbial population.  Results: The pearlmillet seeds soaked in equal volume of Azospirillum or phosphobacteria @ 1:50 dilution or Pink Pigmented Facultative Methylotroph (PPFM) @ 1:100 dilution for 18 h have recorded higher germination and seedling vigour. Pink Pigmented Facultative Methylotroph treated seeds have showed higher germination and seedling vigour amid the microbial cultures. In addition, the bioinoculant treated seed viability and vigour were not affected during three months storage. However, the microbial populations in the seed get declined during storage. The microbial consortia comprising of Azospirillum, phosphobacteria and PPFM did not affect the germination rather seedling vigour. Besides, seeds infused with Azospirillum @ 1:50 dilution and PPFM @1:100 dilution (1:1) for 18 h have recorded higher seedling vigour. In addition, seeds soaked in PPFM @1:100 dilution for 18 h followed by polymer coating @ 5 ml kg-1 and carbendazim seed treatment @ 2 g kg-1 of seed had higher germination and seedling vigour. But, the microbial population in the seed was reduced considerably due to the chemical treatment. Conclusion: The liquid bioinoculants viz., Azospirillum, phosphobacteria and PPFM can be used to pre-inoculate the pearlmillet seeds with required population to be carried over to the field.

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