Volume 2, Issue 2 ((Autumn & Winter) 2016)                   Iranian J. Seed Res. 2016, 2(2): 71-83 | Back to browse issues page


XML Persian Abstract Print


Department of Agronomy, Science and Research Branch, Islamic Azad University Tehran, Tehran, Iran , b_oskouei@yahoo.com
Abstract:   (27872 Views)

This experiment was conducted as a factorial experiment based on a completely randomized design with three replications at two locations: Agricultural and natural resource center of Ardebil province (Moghan) and seed and plant certification and registration institute of Karaj in 2013. The treatments included: planting date in three levels (10-May, 25-May and 9-Jun), seed moisture content at harvest time in four levels (30%, 25, 20 and 15) and seed size in three levels (flat, round and medium). The measured traits were a standard germination test, mean time of germination, seedling weight and length vigor index, germination percent in radical emergence test and germination percent in cold test. The results illustrated that delayed planting caused reduction of seed quality and this reduction was more obvious in delayed harvest (15%), also the reduction rate in round seeds was more than flattered and medium seeds. The minimum percentage of germination and vigor were seen in round seeds of third planting date and moisture harvest by 15%. So it is recommended for corn seed production to sow the seeds before the last week of May and when seed moisture content reached 30 percent, cob harvesting should be started and the harvest not is delayed.

Full-Text [PDF 351 kb]   (4488 Downloads)    
Type of Study: Research | Subject: Seed Ecology
Received: 2015/02/26 | Revised: 2017/12/23 | Accepted: 2015/08/7 | ePublished: 2016/03/16

References
1. Abdel Rahman, A.M., Lazim Mogboul, E., and Nour, A.E. 2001. Effects of sowing date and cultivar on the yield and yield components of maize in Northern Sudan: 7th Eastern and Southern Africa Regional Maize Conference, pp: 295 - 298.
2. Abdol-Baki, A.A., and Anderson, J.D. 1973. Vigour determination in soybean seed by multiple criteria. Crop Science, 13(6): 630 - 633. [DOI:10.2135/cropsci1973.0011183X001300060013x]
3. Agarwal, V.K. 2006. Seed health. International book distributing company publishers, Charbagh, India.
4. Basra, S. 2002. Seed quality. Copyright by Haworth Press, Inc., USA. 119-145.
5. Beck, D. 2004. Hybrid corn seed production. Corn: Origing, history, technology and production. 565-630.
6. Calvino, P.A., Sadras, V.O., and Andrade, F.H. 2003. Quantification of environmental and management effects on the yield of late-sown soybean. Field Crop Research, 83(1): 67-77. [DOI:10.1016/S0378-4290(03)00062-5]
7. Ellis, R.H., and Roberts, E.H. 1981. The quantification of ageing and survivial in orthodox seeds. Seed Science and Technology, 9: 377-409.
8. França-Neto, J.B., Pádua, G.P., Carvalho, M., Costa, O., Brumatti, P.S.R., Krzyzanowski, F.C., Costa, N.D, and Sanches, D.P. 2005. Semente esverdeada de soja e sua qualidade fisiológica. Embrapa Soja. Circular Técnica, 38.
9. Greven, M.M. 2000. Factors influencing seed yield and quality of dwarf French bean (Phaseolus vulgaris L.). Ph.D. Thesis, Lincoln University, Canterbury, New Zealand.
10. Greven, M.M., Mckenzie, B.A., Hampton, J.G., Hill, M.J., and Sedcole, J.R. 2004. Factors affecting seed seed quality in dwarf French bean (Phaseolus vulgaris L.) before harvest maturity. Seed Science and Technology, 32(3): 797-811. [DOI:10.15258/sst.2004.32.3.15]
11. Hartwig, E. E. and Edwards, C. J. 1970. Effects of morphological characteristics upon seed yield in soybeans. Agronomy Journal. 62(1): 64-65. [DOI:10.2134/agronj1970.00021962006200010021x]
12. Hartwig, E.E., and Edwards, C.J. 1970. Effects of morphological characteristics upon seed yield in soybeans. Agronomy Journal. 62(1): 64-65. [DOI:10.2134/agronj1970.00021962006200010021x]
13. Herrera, C.F., Ocumaugh, W.R., Ortega-S, J.A., Lioyd-Reilley, J., Rasmuseen, G.A., and Maher, S. 2008. Environmental influences on seed quality of Windmillgrass ecotypes in South Texas. Agronomy Journal, 100(4): 1205-1210. [DOI:10.2134/agronj2007.0195]
14. International Seed Testing Association (ISTA). 2008. International rules for seed testing. Seed Science and Technology. Basserdorf, Switzerland.
15. Koca, Y.O., and Canavar, O. 2014. The effect of sowing date on yield and yield components and seed quality of corn (Zea mays L.). Scientific Papers-Series A, Agronomy, 57: 227-231.
16. Matthews, S., Wagner, M.H., Ratzenboeck, A., Khajeh-Hosseini, M., Casarini, E., El Khadem, R., and Powell, A.A. 2011. Evaluation of early counts of radicle emergence during germination as a repeatable and reproducible vigour test for maize. Seed Testing International (ISTA News Bulletin), 141: 39-45.
17. Mosavi Nik, S.M., Gholami tilebeni, H., Kord firouz jae, G.H., Sadeghi, M., and Sedigh, E. 2011. Free fatty acid and electrical conductivity changes in cotton seed (Gossypium hirsutum) under seed deteriorating conditions. International Journal of AgriScience, 1(2): 62-66.
18. Mrdja, J., Crnobarac, J., Radic. V., and Miklic, V. 2012. Sunflower seed quality and yield in relation to environment conditions of production region. Helia, 35: 123-134. [DOI:10.2298/HEL1257123M]
19. Munkvold, G., and Rice, M. 2001. Corn seed treatments in 2001. Integrated Crop Management, Iowa State University.
20. Owolade, O.F., Alabi, B.S., Enikuomehin, O.A., and Atungwu, J.J. 2005. Effect of harvest stage and drying method on germination and seed-born fungi of maize (Zea mays L.) in South West Nigeria. African Journal of Biotechnology, 4(12):1384-1389.
21. Pádua, G.P., França-neto, J.B., Carvalho, M.L.M. Krzyzanowski, F.C., and Guimarães, R.M. 2009. Incidence of green soybean seeds as a function of environmental stresses during seed maturation. Revista Brasileira de Sementes, 31(3): 150-159. [DOI:10.1590/S0101-31222009000300017]
22. Roy, S.K.S., Hamid, A., Miah, M.G., and Hashem, A. 1996. Seed size variation and its effects on germination and seedling vigour in rice. Journal of Agronomy and Crop Science, 176(2): 79-82. [DOI:10.1111/j.1439-037X.1996.tb00449.x]
23. Samarah, N.H., and Abu-Yahya, A. 2008. Effect of maturity stages of winter and spring sown chickpea (Cicer arientinum L.) on germination and vigor of the harvested seeds. Seed Science and Technology, 36(1): 177-190. [DOI:10.15258/sst.2008.36.1.19]
24. Sastawa, B.M., Lawan, M., and Maina, Y.T. 2004. Management of insect pests of soybean: effects of sowing date and intercropping on damage and grain yield in the nigerian Sudan savanna. Crop Protection, 23(2): 155-161. [DOI:10.1016/j.cropro.2003.07.007]
25. Shumway, C.R., Cothren, J.T., Serna-Saldivar, S.O., and Rooney, L.W. 1992. Planting date and moisture effects on yield, quality, and alkaline-processing characteristics of food-grade maize. Crop Science, 32(5): 1265-1269. [DOI:10.2135/cropsci1992.0011183X003200050040x]
26. Tort, N., Dereboylu, A.E., and Turkylmaz, B. 2006. Morphology and physiological effects of fungicide with a thiram agent on some corn culture forms. Journal of the Faculty of Science, 29: 67-79.
27. Wych, R.D. 1998. Production of hybrid seed corn. In: G.F. Sprague (ed.), Corn and corn Improvement, 3rd ed. ASA, Madison, WI, 565-607.

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.