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 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 Seed Treatments and Storage Period on Seed Health Parameters of Pea (Pisum sativum L.) under Ambient Storage Conditions

2021 ◽  
Author(s):  
Ravindra Kumar ◽  
Anuja Gupta ◽  
Kumkum Verma ◽  
Arjun Singh
Keyword(s):  
Pisum Sativum ◽  
Seed Quality ◽  
Storage Period ◽  
Storage Conditions ◽  
Untreated Seed ◽  
Pisum Sativum L ◽  
Ambient Storage ◽  
Vigour Index ◽  
Percent Germination ◽  
Treated Seed

Background: Pea (Pisum sativum L.) is an important leguminous crop utilized as vegetable and pulse, being an important source of proteins. Pea seeds harbour various mycoflora both in field and during storage, which plays important role in reducing seed viability, germination and vigour inflicting considerable losses in yield and quality. There is scarcely any recommendation available to maintain seed quality during storage of pea seeds, hence present study was carried out. Methods: Seeds of pea (cvs. Azad P. 1 and Arkel) were treated with Captan and Carbendazim 50%WP fungicides @ 2.0 g/Kg seed and stored under ambient conditions. The samples were drawn at three months interval to assess the effect of storage on seed quality parameters. The vigour index I, per cent germination and speed of germination of these seed samples were determined using ISTA rules. The detection of associated mycoflora in pea (Pisum sativum L.) seed samples was carried out by standard blotter method as recommended by International Seed Testing Association. Result: Total fourteen fungal species were found associated with different pea seed samples. Out of these, maximum incidence of Alternaria alternata (21.36%) followed by Aspergillus flavus (15.53%), A. fumigatus (14.56%), A. niger (11.60%) and Rhizopus stolonifer (9.71%), were recorded on untreated seed of pea cv. Azad P. 1, after 18 months of storage. The germination, speed of germination and vigour index of stored seed reduced with increase in storage period, whereas fungal incidence increased with the increasing storage period. Among the tested cultivars, germination in pea (cv. Arkel) remained above IMSCS even after 18 months of storage under ambient storage conditions. The maximum percent germination (99.0) was found in pea cv. Azad P. 1 seeds treated with Captan at 3 months of storage, whereas minimum percent germination (49.5) was found in untreated seed of pea cv. Azad P. 1 after 18 months of storage. The maximum speed of germination (23.88) was found in Captan treated seed of pea cv. Arkel at 0 month of storage and minimum speed of germination (3.52) was found in untreated seed of pea cv. Azad P. 1 at 18 months of storage. The maximum vigour index I (2339) was found in pea cv. Azad P. 1 (Captan treated seed) at 3 months of storage and minimum vigour index I (431) was found in untreated seed of pea cv. Azad P. 1 after 18 months of storage.

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.

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 Role of seed-Zn content on seed longevity of pigeonpea genotypes

2018 ◽  
Author(s):  
D. Hanumanthappa ◽  
S.N. Vasudevan ◽  
N.M. Shakuntala ◽  
M. Muniswamy ◽  
B. Kisan ◽  
...  
Keyword(s):  
Seed Quality ◽  
Storage Period ◽  
Quality Parameters ◽  
Seed Longevity ◽  
Seedling Vigour ◽  
Seedling Length ◽  
Zn Content ◽  
Dehydrogenase Enzyme ◽  
Vigour Index

Fifteen pigeonpea genotypes were selected to establish the role of seed-Zn content in maintaining seed longevity of pigeonpea genotypes. The present study revealed clear genotypic variability with respect to storability among different pigeonpea genotypes. The genotype with highest seed-Zn content (30.81 ppm) proved as good storer by recording highest seed quality parameters viz., seed germination (84.57 %), seedling length (27.67 cm), seedling vigour index (1303), speed of germination (23.29 %), dehydrogenase enzyme activity (0.551 OD value), a-amylase activity (28.46 mm) with lowest electrical conductivity (1.04 µS/cm) and moisture content (7.29 %) at the end of twelve months of storage period. Whereas, genotypes with low seed-Zn content showed lowest seed quality parameters.

Effect of chemical seed protectants on quality parameters of red gram seed against. pulse beetle Callosobruchus chinensis L under ambient storage

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 281-286
Author(s):  
Manish Kumar Yadav ◽  
R.B. Singh
Keyword(s):  
Quality Parameters ◽  
Ambient Condition ◽  
Callosobruchus Chinensis ◽  
Emamectin Benzoate ◽  
Ambient Storage ◽  
Pulse Beetle ◽  
Vigour Index

Among the insecticides tested as seed protectants against Callosobruchus chinensis under ambient condition for a period of nine months revealed that all seed protectants were significantly effective. Maximum germination was observed (86.67%) when seed treated with novaluron 10 EC @0.05ml/kg followed by emamectin benzoate 5 SG@40mg/kg (85.67 per cent). The vigour index was maximum in emamectin benzoate (1913.87) followed by novaluron.

Yield and Seed quality of barley (Hordeum vulgare L.) as affected by variety, nitrogen level and harvesting time

2014 ◽  
Vol 2 (2) ◽  
pp. 93-100
Author(s):  
Shahnaj Yesmina ◽  
Moushumi Akhtarb ◽  
Belal Hossain
Keyword(s):  
Grain Yield ◽  
Seed Weight ◽  
Seed Quality ◽  
Quality Parameters ◽  
Nitrogen Level ◽  
Yield Attributes ◽  
Harvesting Time ◽  
Nitrogen Levels ◽  
Vigour Index

The experiment was conducted to find out the effect of variety, nitrogen level and harvesting time on yield and seed quality of barley. The treatments used in the experiment consisted of two varieties viz. BARI Barley 4 and BARI Barley 5, three harvesting time viz. 35, 40 and 45 Days after Anthesis (DAA) and nitrogen levels viz. 0, 70, 85 and 100 kg N ha-1 . The experiment was laid out in a spilt- spilt-plot design with three replications assigning the variety to the main plot, harvesting time to the sub-plots and nitrogen level to the sub-sub plots. Variety had significant effects on the all yield attributes except fertile seeds spike-1 . Seed quality parameters viz. normal seeds spike-1 , deformed seeds spike-1 , germination (%) and vigour index were statistically significant. The variety BARI Barley 5 produced higher grain yield and seed quality than BARI Barley 4. Grain yield from BARI Barley 5 and BARI Barley 4 were 4.59 t ha-1 and 4.24 t ha-1 , respectively. Significantly, the highest 1000-seed weight (46.90 g) was produced by BARI Barley 5 than (37.90 g) BARI Barley 4. The result revealed that harvesting time had significant effect on yield and yield attributes and seed quality parameters. Seed yield was highest (4.65 t ha-1 ) when the crop harvested at 40 DAA and it was increased linearly from 35 DAA. Maximum quality seed and 1000-seed weight (43.20 g) was obtained when the crop harvested at 40 DAA. All the yields, yield attributes and seed quality parameters were significantly influenced by nitrogen levels. The highest grain yield (5.14 t ha-1 ) was obtained when BARI Barley 5 variety was fertilized by 100 kg N ha-1 and the lowest (3.14 t ha-1 ) was obtained from control treatments. Normal seeds spike-1 , vigour index, germination (%) were better at 85 kg N ha-1 in variety of BARI Barley 5 than BARI Barley 4. So it can be concluded that BARI Barley 5 showed better result when fertilized with 100 kg N ha-1 and harvested at 40 DAA for getting maximum yield and 85 kg N ha-1 and harvested at 40 DAA for getting better quality seed.

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