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.
Amaranthus tricolor, Gyratory sieve shaker, Seed size grading, Seed germination, Seed quality
Bradtke, B.(2013).Growing Amaranth as a food plant. Retrieved from http://www.Tropical permaculture.com/amaranth-plant.html.
Chandraprakash, R., Masilamani, P., Rajkumar, P., Geetha, R., Albert, V. A. & Eevera,T. (2019). Effect of specific gravity separation on seed germination and biochemical potential of castor hybrid YRCH1. Journal of Pharmacognosy and Phytochemistry, 8(4), 2369-2373.
ISTA, (1999). International Rules for Seed Testing. Seed Sci. & Technol., Supplement Rules, 27, 25-30.
Jerlin, R., Menaka, C., Raja, K. Moorthy, K.R. and Tamilkumar, P. (2010). Standardization of sieve size for grading of olitorius jute seeds. Asian J. Agric. Res., 4, 15-19.
Manikandan, S. & Srimathi, P. (2014). Studies on post-harvest seed handling techniques on grain amaranth (Amaranthus hypochondriacus L.) cv. Suvarna. Current Biotica, 8(2), 13241.
McDaniel, R. G. (1969). Relationships of seed weight, seedling vigor and mitochondrial metabolism in barley 1. Crop Science, 9(6), 823-827.
Menaka, C. & Balamurugan, P. (2008). Seed grading techniques in Amaranthus Cv. CO5. Plant Archives, 8(2), 729-731.
Negi, H. C. S., Kant, K., & Verma, M. M. (1988). Improving germination by grading in soybean. Seeds and Farms, 14(1), 17-19.
Pandita, V. K. & Randhawa, K. S. (1996). Effect of seed size and leaf cutting on seed productivity and quality in beet leaf. Seed Research, 24, 156-157
Panse, V. G., & Sukhatme, P. V. (1954). Statistical methods for agricultural workers. Statistical methods for agricultural workers.
Palanisamy, V. (1990). Viability vigour and storage potential of seeds In different genotypes of tomato (Lycopersicon esculentum Mill.) (Doctoral dissertation,Tamil Nadu Agricultural University; Coimbatore).
Paramasivam, V. (1990). Studies on development, maturation, quality & storability of pea (Pisum sativum L.) Seeds (Doctoral dissertation, Tamil Nadu Agricultural University, Coimbatore)
Patil, V. N. & Sarode, S. D. (1998). Seed quality in wheat as influenced by specific gravity separation. Seed Res., 16(1), 114-116.
Pollock, B. M. & Roos, E. E. (1972). Seed and seedling vigour. In: Seed Biology, I. Importance, Development and Germination, 314-387.
Pozhilarasi, S., Geetha, R. & Sujatha, K. (2018). Effect of sieve size grading for getting better quality seed in Amaranthus polygonoides var. PLR1. Research Journal of Agricultural Science, 9(5), 1166- 1167. https://doi.org/10.20546/ijcmas.2020.907.098
Ragupathi, K.P. (2017). Effect of foliar nutrient on crop growth, seed development, maturation, seed yield, quality and post-harvest handling in Proso millet (Panicum miliaceum L.) cv. CO (PV) 5”. M.Sc., (Ag.) Thesis, TNAU, AC & RI, Madurai.
Sadeghi, H., Khazaei, F., Sheidaei, S. & Yari, L. (2011). Effect of seed size on seed germination behaviour of safflower (Cartham ustinctorius L.). J. Agric. Biol. Sci., 6, 5-8.
Sivasubramaniam, S., Ambika, S. & Vetrivel, V. (2017). Influence of size grading on physiological parameters in Tephrosia (Tephrosia purpurea) MDU (KO)-1. Journal of Applied and Natural Science, 9(1), 639 -641.
Shevtsova, A. M. and O.N. Krol, O. N. (1976). Variability in seed quality and carrot yield.Seed Abstr., 1 (4), 834.
Udhaya, D. (2016). Study of certain seed technological aspects in green manures [sunnhemp (Crotalaria juncea.L), daincha (Sesbania aculeata) and manila agathi (Sesbania rostrata)]. M.Sc., (Ag.) Thesis, TNAU, AC & RI, Madurai.
Yogeesha, H. S., Kashinath, B. L., Bhanuprakash, K. & Naik, L. B. (2013). Seed quality improvement in okra through specific gravity separation. Journal of Horticultural Sciences, 8(1), 70-73.
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