The cotton seeds were coated with different polymers namely Genius coat 171, Genius coat 172, Arcus, Myconate and Quick roots and evaluated for various physiological quality parameters at water holding capacities of 30, 40, 50, 60, 70 and 80 per cent in sand medium along with untreated control seed. The seeds coated with Quick roots polymer recorded higher speed of germination (8.5), germination (88 %), root length (10.35 cm), shoot length (10.80 cm), dry matter production (489.9 mg seedlings-10) and vigour index (1861), respectively over untreated control (5.5, 68, 9.00, 9.50, 458.6 and 1258, respectively) under suboptimal moisture condition like 30 per cent water holding capacity. Cotton seeds coated with Quick roots can tolerate both high as well as low moisture content and produce better germination and seedling establishment.
Cotton seed, Polymers, Seed coating, Water holding capacities
Baxter, L. and Waters, L. (1986). Effect of a hydrophilic polymer seed coating on the field performance of sweet corn and cowpea. J. Amer. Soc. Hort. Sci., 111(1): 31-34.
Chandra Kanta and Rao, P. B. (2014). Effect of water stress on seed germination and seedling growth in six medicinal plant species in tarai region, Uttarakhand. The Bioscan, 9(4): 1383-1388.
Gaganpreet, K. and Udai, R. B. (2011). Effect of polymer and pesticide seed coatings on winter canola seed germination at various osmotic potentials. World J. of Agric. Sci., 7 (5): 591-598.
Handas, A. and Ruso, D. (1974). Water uptake by seeds as affected by water stress, capillary conductivity and seed soil water contact. Agron., 66: 643-647.
Henderson, J.C. and Hensley, L. (1987). Effect of a hydrophilic gel on seed germination of three tree species. Hort. Sci., 22: 450-452.
Iqbal, S. H. and Srinivasan, K. R. (1987). Invention intelligence. Division of technical services, NCL, pp. 382-385.
ISTA. (1999). International Rules of Seed Testing. Seed Sci. and Technol., 27: 27-32.
Maguire, J. D. (1962). Speed of germination - Aid in selection and evaluation of seedling emergence and vigour. Crop Sci., 2: 176-177.
Panse, V. G. and Sukhatme, P. V. (1985). Statistical methods for Agricultural workers. ICAR, Publication, New Delhi: 327-340.
Rajasekaran, R. (2004). Investigation on seed production, enhancement and storage techniques in Brinjal hybrid COBH 1 (Solanum melongena L.) and its parental lines. Ph.D. Thesis, Tamil Nadu Agricultural University, Coimbatore.
Renugadevi, J., Natarajan, N. and Srimathi, P. (2009). Performance of polycoated cluster bean [Cyamopsis tetragonoloba (l.) taub.] seeds under different water holding capacities. Legume Res., 32 (2): 113-116.
Schneider, E. C. and Gupta, S. C. (1985). Corn emergence as influenced by soil temperature,
matric potential and aggregate size distribution. Soil Sci. Soc. Am. J., 49: 415–422.
Taylor, A. G., Allen, P. S., Bennett, M. A., Bradford, K. J., Burris, J. S. and Misra M. K. (1998). Seed enhancement. Seed Sci. & Technol., 8: 245-256.
Taylor, A. G. and Kwiatkowski, J. (2001). Polymer film coatings decrease water uptake and water vapour movement into seeds and reduce imbibitional chilling injury. http://www.seedquest.com/technology/from/seedbiotics/may01/paper1.htm.
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