scholarly journals GERMINABILITY OF VARIETIES OF BEAN (Phaseoulos Vulgaris L.) AND OKRA (Abelmoschus Esculentus L. Moench) UNDER LOW TEMPERATURE STORAGE CONDITION

2021 ◽  
Vol 2 (2) ◽  
pp. 92-103
Author(s):  
Indira Ariyarathna ◽  
Sarath Weerasena ◽  
Chalinda K. Beneragama
Keyword(s):  
Low Temperature ◽  
Seed Quality ◽  
Storage Period ◽  
Storage Condition ◽  
Germination Percentage ◽  
Storage Duration ◽  
Packing Materials ◽  
Moisture Field ◽  
Vigour Index ◽  
Field Emergence

Bean and okra are common vegetables cultivated in the most regions of Sri Lanka.  The seeds of these crops are mainly stored in cold storage as bulk before releasing retail lots to sales outlets. Commercial growers and gardeners buy seeds in bulk or in packages at retail stores. Although certified seeds are frequently tested by the seed testing laboratories, they do not guarantee the maximum field emergence. Certified seed lots of two pole bean varieties, ‘Keppetipola Nil’ (KN) and ‘Bandarawela Green’ (BG) and two okra varities,’MI-5’ and ‘Haritha’ were stored in poly sack and polypropylene bags under controlled temperature (17±1 °C) and relative humidity (RH) (52-55%) over a two-year period. Bulk seeds of bean and okra varieties packed in polypropylene and poly sack bags depicted a high germination percentage throughout the storage period for two years. Seed quality parameters, seed germination, seed moisture, field emergence and vigour index significantly varied with the storage duration and declined in varieties. Significant differences in moisture, field emergence and vigour index were recognized as affected by the packing materials in all varieties except MI-5. Both Poly sack and polypropylene packing materials were found suitable to maintain viability at the minimum seed certification standards for two years of storage period. Poly sack was more appropriate than polypropylene to keep viability for more than 2 years of storage under low temperature and RH condition. These findings would help seed handlers including seed producers and seed sellers to store crop seeds between growing seasons in the tropical environment.

scholarly journals Effect of fungicides on seed quality of lentil (Lens culinaris L.) during storage

2017 ◽  
Vol 5 (2) ◽  
pp. 51-56
Author(s):  
A Khatun ◽  
MAH Bhuiyan ◽  
A Tahmid
Keyword(s):  
Moisture Content ◽  
Seed Quality ◽  
Germination Rate ◽  
Storage Period ◽  
Dry Weight ◽  
Storage Condition ◽  
Germination Percentage ◽  
Vigour Index ◽  
Initial Seed

Laboratory tests were carried out to study the effect of different fungicides i.e. Bavistin DF, Vitavax and Genuine 50WP on the seed quality of lentil during storage condition. After processing and drying, seeds were preserved separately with three fungicides at the rate of 2.5g kg-1 of seeds and stored in earthen pots till next planting time. The seed quality i.e. moisture content (%), germination rate (%), dry weight (g) of seedlings and vigour index were measured at the end of storage period. The average germination percentage of the initial seed lot was 90% and moisture content was 9%. Among the three fungicides, Bavistin DF showed higher values for germination percentage (91.3% in 2004 and 92.7% in 2005), dry weight (0.70 g in 2004 and 0.67 g in 2005) and vigour (63.8 in 2004 and 62.1 in 2005).Jahangirnagar University J. Biol. Sci. 5(2): 51-56, 2016 (December)

scholarly journals Quality Deterioration of Commercial Bean (Phaseolus vulgaris) Seeds Stored under Contrasting Environmental Conditions in Sri Lanka

2020 ◽  
Vol 8 (1) ◽  
pp. 33-44
Author(s):  
R.A.I.S. Ariyarathna ◽  
S.L. Weerasena ◽  
C.K. Beneragama
Keyword(s):  
Sri Lanka ◽  
Low Temperature ◽  
Environmental Conditions ◽  
Seed Quality ◽  
Storage Period ◽  
Fluorescence Analysis ◽  
Quality Parameters ◽  
Full Potential ◽  
Ambient Conditions ◽  
Field Emergence

Bean is a popular vegetable grown in most parts of Sri Lanka. Farmers and home gardeners purchase seeds in packeted form retail outlets. However, quality problems are frequently reported, especially on low field germination. Quality parameters namely, percentage germination, field emergence, seedling length, vigour index and chlorophyll fluorescence analysis were used to determine the effect of different storage environmental conditions on seed longevity of two bean varieties during a two-year storage period, 2016 to 2018. Seeds in triple-laminated packets stored in four contrasting conditions; low temperature storage conditions (Tem. 5oC, 65% RH); three geo-environmental conditions namely, Gannoruwa (mid country wet zone), Kundasale (mid country intermediate zone), and Mahailuppallama (low country dry zone) showed varied behavior in seed quality parameters respective of the variety. It was apparent that germination test alone does not represent the full potential of field emergence. Results of the present study revealed that when field emergence and vigour are also taken in to account, both varieties of bean seeds can be stored under ambient conditions at Gannoruwa, Kundasale or MahaIlluppallama for a maximum period of 12 months, without compromising the seed quality. The seeds stored under low temperature conditions (i.e. 5 °C), maintained the seed germination over 75% for a period of 24 months.  

scholarly journals Management practices effect on seed features of Italian ryegrass following storage period

2014 ◽  
Vol 30 (1) ◽  
pp. 145-152 ◽  
Author(s):  
V. Mandic ◽  
A. Simic ◽  
S. Vuckovic ◽  
R. Stanisavljevic ◽  
Z. Tomic ◽  
...  
Keyword(s):  
Management Practices ◽  
Seed Quality ◽  
Storage Period ◽  
Germination Percentage ◽  
Italian Ryegrass ◽  
Row Spacing ◽  
Ambient Conditions ◽  
Seeding Rate ◽  
Storage Duration ◽  
Germination Energy

Italian ryegrass seed crop was established in 2007 with two sowing densities (D1 = 60 cm row spacing and 5 kg ha-1 seeding rate; D2 = 20 cm row spacing and 20 kg ha-1 seeding rate) and using two spring nitrogen rates (0 and 150 kg N ha-1). Seed germination and thousand seed weight (TSW) of Italian ryegrass was observed in first production year. After harvest in June, seeds were stored under standard storage conditions and sampled 90 days after harvest (DAH), and then 2000 DAH. At 90 DAH, seeds were tested for TSW, as well as germination energy and total germination percentage at incubation temperatures of 10, 15, 20 and 25?C. Ryegrass seeds had the best germination energy 90 DAH at 20?C and maximum total germination at 15?C, which implies that early autumn (September-October) is proper sowing period for freshly harvested seeds of Italian ryegrass. Italian ryegrass seeds could maintain satisfactory germination energy (59.3%) and total germination (77.3%) up to 2000 DAH. High seed quality was obtained and applied treatments did not change seed quality significantly unlike storage period which had considerable influence on seed quality. The data can serve for the determination of a proper storage duration management between harvest and sowing of the tested species under ambient conditions of Serbia.

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 Development of priming technology for enhanced planting value of seeds in kabuli chickpea (Cicer arietinum L.)

2021 ◽  
Vol 13 (2) ◽  
pp. 735-743
Author(s):  
Umesh Hiremath ◽  
Basave Gowda ◽  
Lokesh G.Y . ◽  
B. S. Ganiger
Keyword(s):  
Root Length ◽  
Seed Quality ◽  
Dry Weight ◽  
Germination Percentage ◽  
Quality Parameters ◽  
Shoot Length ◽  
Growth And Yield ◽  
Seedling Vigour ◽  
Seedling Length ◽  
Vigour Index

The continuous rise in global population demands more food production under limited land resources accompanied by climate change. More oversupply of quality seeds to meet ever-growing food demand is a highly challenging task. Seeds with low vigour level limit the growth and yield of crops at varied field conditions. Hence, an experiment was conducted to develop a technique for the fast and homogeneous growth of kabuli chickpea seeds. The priming treatments evaluated in the present study enhanced the various seed quality parameters of kabuli chickpea significantly when compared to control. Hydro-priming for 4 hours (at 20°C) and air drying for 72 hours showed better results compared to rest of the treatments both in fresh seeds which recorded higher first count (66.38%), germination (92.50%) root length (11.85 cm), shoot length (6.16), mean seedling length (18.01), dry seedling weight (747 mg), seedling vigour index-I (1665), higher speed of emergence (0.3992) and old seeds with higher first count (61.88%), germination (74.13%) root length (8.15 cm), shoot length (5.85 cm), mean seedling length (14.00 cm), seedling dry weight (611 mg), seedling vigour index-I (1056), higher speed of emergence (0.3814). The aged seeds have recorded 29 % increase in germination percentage in contrast to 8 percent increases in fresh seeds. Kabuli chickpea seeds could be subjected to hydropriming, an affordable, alternative, and eco-friendly technique for improving seed and seedling vigour of kabuli chickpea.

Influence of Nano Formulation on Augmenting the Seed Quality in Groundnut (Arachis hypogaea L.)

2020 ◽  
Author(s):  
C. Tamilarasan ◽  
K. Raja
Keyword(s):  
Controlled Release ◽  
Seed Quality ◽  
Germination Percentage ◽  
Bioactive Molecules ◽  
Seed Coating ◽  
Crop Failure ◽  
Seedling Length ◽  
Vigour Index ◽  
Moisture Conditions ◽  
Nano Formulation

Background: Groundnut were mainly cultivated under rain fed condition, lack of initial seedling quality due to lower moisture conditions, it causes reduced crop yield and in sometimes it leads to crop failure. In order to overcome this problems, effective seed enhancement techniques as seed coating plays major role in maintaining the seed quality. Methods: The controlled release of bioactive molecules namely hormones gibberellic acid (GA3) as a smart delivery system can be achieved through seed coating in groundnut by exploiting advanced nanotechnology. Infusion of active ingredients as hormones (GA3) through the seed coating formulation by nano formulation methods. At nano level it influences the effects at higher level and gives best results through controlled release of hormones without any loss. Result: Due to nano formulation coating in groundnut, seeds had an effective results in all the parameters viz., imbibition rate (48%), speed of germination (5.5), germination percentage (87%), seedling length (24.7 cm), vigour index (2142), hydrolysing enzymes (α-amylase14.83 and lipase 1.481), which significantly differs from untreated seeds. Hence, it was concluded that the GA3 infused nano formulation coating at 15 ml per kilogram of seed can be used for seed quality improvement in groundnut for better seedling establishment.

scholarly journals Evaluation of Seed Quality Attributes of Sorghum Germplasm Accessions from Eastern, Coastal and Nyanza Regions, Kenya

2020 ◽  
Vol 9 (3) ◽  
pp. 9
Author(s):  
C. W. Muui ◽  
R. M. Muasya ◽  
S. Nguluu ◽  
A. Kambura
Keyword(s):  
Food Security ◽  
Seed Quality ◽  
Germination Percentage ◽  
Seed Vigour ◽  
Subsistence Farmers ◽  
Germination Time ◽  
Vigour Index ◽  
Mean Germination Time ◽  
Handling Practices ◽  
Germplasm Accessions

Sorghum (Sorghum bicolor L.) is an important cereal crop in Kenya. Despite the crops importance, the yields attained by farmers in Eastern, Coastal and Nyanza regions of Kenya remain low. Access to good quality seeds of sorghum is one of the constraints facing the subsistence farmers. Good quality seed is important for increasing yield to attain food security. The aim of this study was to evaluate quality attributes of the seed used by farmers. A total of 108 germplasm accessions were obtained from 76 farmers. The seeds were tested for time and percentage of germination, seed vigour index, shoot and root dry weight. Data collected was subjected to analysis of variance. Means were separated using Fisher’s Least Significance Difference test at p ≤ 0.05. Seed samples of 26 accessions attained germination percentage below stipulated standards by Seeds and Plant Varieties Act CAP 326. Majority of seeds showed longer mean germination time with only nine accessions germinating in less than ten days. Seed vigour index was relatively high in most of the accessions, while biomass accumulation varied from high to very low among accessions. Though most of the seeds attained a high germination percentage, about 92% of seeds showed longer mean germination time. The environmental conditions in the fields, pre and post harvest handling practices impact on the seed quality hence the wide variability in germination percentage, germination time, seed vigour index and dry matter accumulation. Therefore the need to improve quality of seeds used by subsistence farmers by providing extension services on best pre and post harvest handling practices. Increasing production of sorghum in these regions will contribute significantly towards realizing food security. Further analysis could be carried out on genetic and sanitary quality aspects of the seeds planted by farmers in Eastern, Nyanza and Coastal regions.

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 Effect of nitrogen and plant growth regulators on seed yield per plant and seed quality parameters in brinjal (Solanum melongena L.)

2017 ◽  
Vol 9 (4) ◽  
pp. 2338-2343
Author(s):  
Arpana D. Vaja ◽  
J. B. Patel ◽  
R.N. Daki ◽  
Shital A. Chauhan
Keyword(s):  
Seed Yield ◽  
Root Length ◽  
Seed Quality ◽  
Dry Weight ◽  
Germination Percentage ◽  
Quality Parameters ◽  
Shoot Length ◽  
Fresh Weight ◽  
Shoot Dry Weight ◽  
Vigour Index

The present investigation on effect of nitrogen [N0 (Control), N1 (50 kg N/ha), N2 (100 kg N/ha), and N3 (150 kg N/ ha)] and plant growth regulators [G0 (Control), G1 (50 ppm GA3), G2 (50 ppm NAA) and G3 (500 ppm Cycocel)] on seed yield per plant and seed quality parameters in brinjal (Solanum melongena L.) cv. GJB 3 was carried out at the Instructional Farm, Department of Agronomy, Junagadh Agricultural University, Junagadh during kharif 2015-16. The experiment was laid out in field as per randomized block design (Factorial) with three replications. The seed harvested from 16 different treatments combinations replicated thrice from the field were analyzed in the laboratory following completely randomized design (factorial) for various seed quality parameters. Application of nitrogen @ 150 kg N/ha recorded significantly (P<0.05) highest seed yield per plant, shoot fresh weight, root dry weight, shoot dry weight and vigour index – 2 (mass), while application of 100 kg N/ha resulted in significantly (P<0.05) highest germination percentage, root length, shoot length, root fresh weight and vigour index – 1 (length). Application of GA3 at 50 ppm recorded significantly the highest seed yield per plant, germination percentage, root length, shoot length, root fresh weight, shoot fresh weight, root dry weight, shoot dry weight, vigour index – 1 (length) and vigour index – 2 (mass). Among the 16 different treatment combinations, nitrogen @ 150 kg/ha and GA3 50 ppm noted the maximum seed yield per plant, shoot dry weight and vigour index – 2 (mass), while significantly the maxi-mum germination percentage, root length, shoot length, root fresh weight, shoot fresh weight and vigour index – 1 (length) were registered in treatment combination nitrogen 100 kg N/ha and GA3 @ 50 ppm. Therefore, it is advised that application of 100-150 kg of N/ha as a nitrogenous fertilizer and spray GA3 @ 50 ppm (G1) at 45 days after transplanting helps in increasing the seed yield per plant and seed quality parameters in brinjal seed production.

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.

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