Seed Treatment to Overcome Autotoxicity of Forage Rape

Farid Golzardi, Nima Aghamollaei

Abstract


In order to evaluate the effects of different priming treatments on reducing autotoxicity potential of forage rape, an experiment was conducted with a factorial arrangement based on completely randomized design with four replications at Islamic Azad University of Karaj during 2014. Factors of experiment consisted of forage rape extract in three levels (aerial parts, underground tissues, and combination of different parts) and various seed priming methods in six levels (control, hydro-priming, osmo-priming with PEG, hormonal priming with gibberellic acid, potassium nitrate priming, and priming by salicylic acid. The studied traits according to ISTA (International Seed Testing Association)instruction were: rate and percentage of germination, length of shoot and root, fresh and dry weight of seedling. The results showed that the extracts of various parts of forage rape inhibits the seedling growth in different ways by affecting its germination traits. The lowest and highest percentage of seed germination was observed in extracts of underground parts and aerial organs, respectively. Different priming treatments also have various inhibiting role for reducing autotoxicity potential of forage rape. As regards, hydro-priming and osmo-priming with PEG were the most influential methods of priming. Germination rate of seeds primed with salicylic acid was zero.It seems that salicylic acid has inhibitory effects on seed germination of forage rape. Germination rate of seeds primed with gibberellic acid (1.29 day-1) and potassium nitrate (1.57 day-1) was less than control treatment (2.19 day-1). According to results, hydro-priming or osmo-priming with PEG could be a suitable tool for reducing autotoxicity potential of forage rape and improving germination characteristics, particularly for monoculture systems.

 

Keyword: Germination rate, Hydro-priming, Osmo-priming, Seedling weight


Full Text:

PDF

References


Afzal, A., Aslam, N., Mahmood, F., Hameed, A., Irfan, S., Ahmad, G., 2006. Enhancement of germination and emergence of Canola seeds by different priming techniques. Caderno de Pesquisa Sér. Bio., Santa Cruz do Sul, 16 (1): 19- 34.

Ben-Hanunoud, M., Ghorbal, H., Kramerand, R. J., Qeslati, O., 2001. Allelopathic effects of barley extracts on germination and seedling, growth of bread and durum wheat. Agronomy Journal, 21 (1): 65-71.

Bones, A. M., Rossiter, J. R., 1996. The myrosinase glucosinolate system. An innate defense system in plant. PhysiologiaPlantarum, 97 (1): 194-208.

Bruce, S. E., Kirkeyard, J., Cormack, A. S., Pratly, J., 1990. 10th International Rapeseed Congress. Canberra Australia. India, pp: 3- 22.

Cheng, Z., Bradford, K. J., 1999. Hydro-thermal time analysis of tomato seed germination responses to priming treatments. Journal of Experimental Botany, 50 (330): 89-99.

Chung, I. M., Ahn, J. K., Yun, S. J., 2001. Assessment of allelopathic potential of barnyard grass (Echinochloa crus-galli) on rice (Oryza sativa L.) cultivars. Crop Protection, 20 (10): 921-928.

Demir, I., Ellialtioglu, S., Tipirdamaz, R., 1994. The effect of different priming treatments on reparability of aged eggplant seeds. International Symposium on Agro Techniques and storage of vegetable and Ornamental Seeds. International Society for Horticultural Science, 362: 205-212.

Farooq, M., Basra, S. M. A., Warraich, E. A., Khaliq, A., 2006. Optimization of hydro-priming techniques for rice seed invigoration. Seed Science and Technology, 34 (2): 529- 534.

Golzardi, F., Mondani, F., Ahmadvand, G., Vazan, S., Shabani, Gh., Sarvaramini, Sh., 2009. The allelopathy effects of water extracts of canola on seed germination and seedling growth of weeds. Weed Research Journal, 1 (1): 1- 11.

Golzardi, F., Vaziritabar, Y., Vaziritabar, Y., Sadat Asilan, K., JafariSayadi, M. H., Sarvaramini, Sh., 2014. Allelopathic effect of two Cynanchumacutum L. populations on emergence and shoot development of corn. International Journal of Advanced Life Sciences, 7 (4): 615-627.

Golzardi, F., Vaziritabar, Y., Vaziritabar, Y., Sadat Asilan, K., Ebadi, S. Z., Sarvaramini, Sh., JafariSayadi, M. H., 2015. Allelopathic Effect of Two Cynanchumacutum L. Populations. Journal of Applied Environmental and Biological Sciences, 5 (1): 166- 175.

Hesabi S., Vazan, S., Golzardi, F., 2014. Investigation the effect of osmo-priming and hydro-priming on germination behavior of alfalfa (Medicago sativa) and maize (Zea mays). International Journal of Biosciences, 5 (6): 182-188.

Horricks, J. S., 1969. Influence of rape residue on cereal production. Canadian Journal of Plant Science, 49 (5): 632-634.

ISTA (International Seed Testing Association). 1996. International rules for seed testing. Seed Science and Technology, 24: 155-202.

Jyotsana, V., Srivastava, A. K., 1998. Physiological basis of salt stress resistance in pigeon pea (Cajanus cajan L.). II. Pre-sowing seed soaking treatment in regulating early seedling metabolism during seed germination. Plant Physiology and Biochemistry, 25: 89-94.

Kaya, M. D., Okcu, G., Atak, M., Cikili, Y., Kolsarici, O., 2006. Seed treatments to overcome salt and drought stress during germination in sunflower (Helianthus annuus L.). European Journal of Agronomy, 24 (4): 291-295.

Levanon, D., Henis, Y., Okon, Y., Dovrat, A., 1982. Alfalfa saponins and microbial transformations of nitrogen in peat. Soil Biology and Biochemistry, 14 (5): 501-504.

Masiunas, J., Eastman, C., 1991. Glucosinolates in Brassica: Biological control agent. Are good for our health and bad for pests? Midwest Biological Control News.

Mondani, F., Ahmadvand, G., Golzardi, F., Sarabi, V., Niroumand, S.M., 2010. Autotoxicity effects of water extracts of canola on germination and seedling growth of two canola varieties. Iranian Journal of Field Crops Research, 8 (4): 606- 614.

Mson-Sedun, W., Jessop, R. S., 1989. Differential phytotoxicity among species and cultivars of the genus Brassica to Wheat. Effects of environmental factors during growth on the phytotoxicity of residue extracts. Plant and Soil, 117: 93-101.

Oleszek, W., Ascard, J., Johanson, H., 1996. Brassicaceae as alternative plants for weed control. In P. Tauro, S. S. Narwal (eds) Allelopathy in Pests Management for Sustainable Agriculture. Scientific Publishers, Jodhpur, India, pp. 3- 22.

Pedersen, J., Belz, R., Walker, F., Hurle, K., 2001. Weed suppression by release of isothiocyanates from turinrape mulch. Agronomy Journal, 93: 37- 43.

Rashid, A., Hollington, P.A., Harris, D., Khan, P., 2006. On farm seed priming for barely on normal, saline and sodic soils in North West Frontier Province, Pakistan. European Journal of Agronomy, 24 (3): 276-281.

Sanchez, J. A., Munoz, B. C., Fresneda, J., 2001. Combine effects of hardening hydration-dehydration and heat shock treatments on the germination of tomato, pepper and cucumber. Seed Science and Technology, 29 (3): 691-697.

Taylor, A. G., Harman, G. E., 1990. Concepts and technologies of selected seed treatments. The Annual Review of Phytopathology, 28 (1): 321-339.

Waller, G. R., Krenzer, E. G., Mcpherson, J. K., Mcgown, S. R., 1987. Allelopathic compounds in soil from no tillage v/s conventional tillage in wheat production. Plant and Soil, 98 (1): 5-15.


Refbacks

  • There are currently no refbacks.