Study the growth process of spring rapeseed (Brassica napus L.) varieties at different planting times in Khuzestan, Iran.

Subject Areas : Agroecology Journal

Mohammad Khayat ¹

1 - Member of Young Researchers' Clup, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.

Received: 2010-11-20 Accepted : 2011-12-10 Published : 2012-01-21

Keywords: Rapeseed, growth rate, varieties, Planting date,

Abstract :

Study the growth process of rapeseed will provide the possibility to manage its cultivation with regard to optimal adaptation to the growing environment. This study was performed using a split plot experiment based on a randomized complete block design with three replications. Four planting dates (Novemeber 6, November 21, December 6 and December 21) were allocated to the main plots and four varieties (Hyola401, PP.401, R.G.S.300 and Option500) to the subplots. The results showed that late planting at the critical growth stage in the end season will encounter to high temperature, and this resulted in better planting date of 6th November for yield and physiological indices as compared to other planting dates. Hybrid Hyola401 presented the heighest yield (3603 kg.ha-1), maximum LAI (3.51), total dry matter (1249 g m-1), growth rate (21 g.m-2. day-1), net assimilation rate (7 g.m-2 day-1) and relative growth rate (0.064 g.g-1.day-1) at the flowering stage in comparison to other cultivars. In general, the results showed that Hyola401 had higher growth indexes than other varieties if it is varieties on mid November in the Khuzestan province of Iran.

References:

1. Abdoli, P., S.A. Q. Fathi. E. Farshadfar. 2003. Effect of planting date on oil and grain yield of canola varieties in Kermanshah. Journal of Agriculture. Science. 27 (1): 40-55. [In Persian with English Abstract]


2. Anonymous. 2006. Rapeseed cultivation in Khuzestan province. Research Report. Seed and Plant Improvement Institute. Iran. Karaj. 99 pp [In Persian with English Abstract]


3. Ayneband, A. 1993. Determination of growth curves and Planting date performance of rapeseed cultivars. M.Sc. thesis in Agronomy. Tarbiat Modarres University. 111 pp. [In Persian with English Abstract]


4. Azizi, M. And A. Soltani. And S. Khavari. 1999. Rapeseed. University of Mashhad Press. 410 pp. [In Persian]


5. Chapman, J. F., R.W., Daniels and D. H. Scarisbrick. 1984. Field studies on ¹⁴C assimilate fixation and movement in oilseed rape. Journal of Agriculture Science. Cambridge. 102: 23-31.


6. Faqeh, P. 2000. Evaluation yield components, growth and physiological indices of canola cultivars in Dezful region. M.Sc. Thesis in Agronomy. Islamic Azad University, Dezful branch. 117 pp [In Persian with English Abstract]


7. Frayman, S., W. A. Charnetskiand and R.K. Crookston. 2007. Role of leaves in the formation of seed rape. Conf. Saskatoon, Canadian .pp: 689 – 692.


8. Gabrielle, B, Denoroy, P, Gosse, G, Justes, E; and M. N. Anderson, 2006. A model of leaf area development and senescence of winter oilseed rape. Field Crop Research, 75: 209-222.


9. Hunt, R. 1990. Basic Growth Analysis. Cambridge University Press. 55 pp.


10. Imam, Y. 2004. Grain farming. Shiraz University Press. 201 pp.


11. Jorgeh, A. 2003. Determine of appropriate planting date on promising varieties of rapeseed and study the correlation between yield and yield components. M.Sc. thesis in Agronomy. Islamic Azad University, Dezful Branch. 109 pp [In Persian with English Abstract]


12. Kazerany, N .And M. H. Ahmadi. 2003. Effect of genotype and sowing date on the quantitative and qualitative traits of rapeseed in Bushehr. Crop Science Journal of Iran. 5 (2): 137-127. [In Persian with English Abstract]


13. Mendham, N. J., J. Russell and N. K. Jaros. 1990. Response to sowing time of three contrasting Australian cultivars of oilseed rape. Agriculture Science Journal. Cambridge. 114: 275-283.


14. MokhtarPour, H. 2000. The Genetic Improvement. Seed and plant Improvement Institute. Golestan Branch. pp 98. [In Persian]


15. Qulipor, A., N. Latifi, K. Ghasemi, H. Alyary. and M. Moqadam. 2004. Comparison of growth and yield of rapeseed varieties in rain fed conditions Gorgan. Journal of Agricultural Sciences and Natural Resources. 6: 13-5. [In Persian with English Abstract]


16. Rahnama, A. A. And A. M. Bakhshandeh. 2005. Effect of planting date and direct planting on agronomic characteristics and yield of canola under Ahwaz condition. Iran Crop Science Journal. 4(4): 336-332. [In Persian with English Abstract]


17. Robertson, M. J., and J. F .Holland. 2005. Indian mustard to sowing date in the grain belt of north-eastern Australia. Australian journal of Experimental Agriculture. 44: 43-52.


18. Sarmadnia, G.h. And A. Kochaki. 1995. Crop Physiology. University of Mashhad Press. Pp 467.


19. Shariati, sh. 2000. Canola. Department of Budget and Planning, Ministry of Agriculture. pp 50


20. Toliat Abolhassani, M. 1994. Assessment of density and agronomic characteristics and quality of winter rapeseed in the region of Khorasan. M.Sc. thesis in Agronomy. Tarbiat Modarres University. 102 pp [In Persian with English Abstract]


21. Zamiri, M. A. 1999. Assessment effects of planting date on growth and yield and yield components of rapeseed cultivars in regional climates of Dezful. M.Sc. thesis in Agronomy. Islamic Azad University, Dezful branch. pp 141. [In Persian with English Abstract]

16. Porya, A., M. Azizi. And A. Soltani. 2009. Comparison of Yield and Physiological Indices of Spring Cultivars of Oilseed Rape Species. Journal of Agriculture Seed and plant Improvement. 25 (3): 401-417. [In Persian with English Abstract]

21. Soleimanzadeh, H., N. Latifi and A. Soltani. 2007. Relationship of phenology and physiological traits with grain yield in different cultivars of Rapeseed (Brassica napus L.) under rain fed conditions. Journal of Agriculture Science and Natural Resource. 14(5): 67-76. [In Persian with English Abstract]