عنوان مقاله [English]
Secondary seed dormancy is known as the major reason for seed persistence of canola (Brassica napusL). Volunteer’s rapeseeds emerging from the soil seed bank can lead to unwanted gene dispersal to other plants after breaking secondary seed dormancy. At the current study, secondary dormancy was induced in 41 lines and 5 cultivars of canola under laboratory condition with using polyethylene glycol 6000, during 14 days and secondary seed dormancy recorded. This study was conducted as a randomized complete design. High germination percentage was observed at the all lines and cultivars (higher than 94%), and they were classified at five groups included very low, low, medium, high and very high secondary dormancy using cluster analysis. Among different lines, five genotypes were included at the very low group and two genotypes were included at the very high group. The other lines were placed in average and low groups. It was observed that five varieties (RGS003, Zarfam, Hyola401, Hyola308 and Hyola50) had average secondary dormancy (40-60%) that was related to breeding ignorance about secondary dormancy during seed production process. Lines classification based on different levels of secondary dormancy helps seed producers to select lines with low levels of secondary dormancy along with high yield and other characteristics, in order to deal with problems in seed producing process.
فرشادفر ع. (1389) اصول و روشهای آماری چند متغیره. انتشارات دانشگاه رازی، کرمانشاه، 754 صفحه.
Beckie H.J., Warwick S.I. (2010) Persistence of an oilseed rape transgene in the environment. Crop Protection. 29: 509–512.
Benech-Arnold R.L., Sanchez R.A., Forcella F., Kruk B.C. and Ghersa C.M. (2000) Environmental control of dormancy in weed seed banks in soil. Field Crops Research. 67: 105–122.
Crawley M.J., Brown S.L. (2004) Spatially structured population dynamics in feral oilseed rape. Proceedings of the Royal Society of London. 271:1909–1916.
Dyer W.E. (1995) Exploiting weed seed dormancy and germination requirements through agronomic practices. Weed Science. 43: 498–503.
Fei H., Tsang E., Cutler A.J. (2007) Gene expression during seed maturation in Brassica napus in relation to the induction of secondary dormancy. Genomics 89:419–428.
Finkelstein R.R. (2010) The role of hormones during seed development and germination. Pages 549–573 In Davies PJ, ed. Plant Hormones: Biosynthesis, Signal Transduction, Action. Ithaca, New York: Springer
Gruber S., Pekrun C. and Claupein W. (2004) Population dynamics of volunteer oilseed rape (Brassica napus L.) affected by tillage. European Journal of Agronomy. 20: 351–361.
Gruber S., Pekrun C. and Claupein W. (2005) Life cycle and potential gene flow of volunteer oilseed rape in different tillage systems. Weed Research. 45: 83-93.
Gruber S., Emrich K. and Claupein W. (2009) Classification of canola (Brassica napus) winter cultivars by secondary dormancy. Canadian Journal of Plant Science. 89: 613-619.
Gruber S., Beuhler A., Meohring J. and Claupein W. (2010) Sleepers in the soil–Vertical distribution by tillage and long-term survival of oilseed rape seeds compared with plastic pellets. European Journal of Agronomy.33: 81-88.
Gulden R.H., Shirtliffe S.J. and Thomas A.G. (2003) Secondary seed dormancy prolongs persistence of volunteer canola in western Canada. Weed Science. 51: 904-913.
Gulden R.H., Shirtliffe S.J. and Thomas A.G. (2003) Harvest losses of canola (Brassica napus) cause large seed bank inputs. Weed Science. 51: 83–86.
Gulden R.H., Thomas A.G. and Shirtliffe S.J. (2004) Relative contribution of genotype, seed size and environment to secondary seed dormancy potential in Canadian spring oilseed rape (Brassica napus). Weed Science. 44: 97-106.
Haile T.A. and Shirtliffe S.J. (2014) Effect of Harvest Timing on Dormancy Induction in Canola Seeds. Weed Science. 62: 548–554.
Hilhorst H.W.M. (2007) Definitions and hypotheses of seed dormancy. In: Bradford KJ and Nonogaki H, eds. Seed development, dormancy and germination. Oxford: Blackwell Publishing. 50–71.
ISTA (2009) International rules for seed testing. The international Seed Testing Association (ISTA).
Juricic S., Orlando S. and Page-Degivry M.T.L. (1995) Genetic and ontogenic changes in sensitivity to abscisic acid in Brassica napus seeds. Plant Physiology and Biochemistry. 33: 593–598.
Knispel A.L., Mclachlan S.M. (2010) Landscape-scale distribution and persistence of genetically modified oilseed rape (Brassica napus) in Manitoba. Canada Environmental Science and Pollution Research. 17:13–25
Liu Y., Wei W., Mab K., Li J., Liang Y., Darmency H. (2013) Consequences of gene flow between oilseed rape (Brassica napus) and its relatives. Plant Science. 211: 42– 51.
Lutman P.J.W. (1993) The occurrence and persistence of volunteer oilseed rape (Brassica napus). Aspect of Applied Biology. 35: 29-36.
Lutman P.J.W., Freeman S.E. and Pekrun C. (2003) The long-term persistence of seeds of oilseed rape (Brassica napus) in arable fields. Journal of Agricultural Science. 141: 231-240.
Lutman P.J.W., Berry K., Payne R.W., Simpson E., Sweet J.B., Champion G.T., May M.J., Wightman P., Walker K., and Lainsbury M. (2005) Persistence of seeds from crops of conventional and herbicide tolerant oilseed rape (Brassica napus). Proceeding of the Royal Society B: Biological Science. 272: 1909-1915.
Macleod J. (1981) Oilseed rape book. A manual for growers, farmers and advisors.Cambridge Agricultural Publishing: 107 – 119.
Mallory-Smith C., and Zapiola M. (2008) Gene flow from glyphosate-resistant crops. Pest Management Science. 64: 428–440.
Micheal B.E. and Kaufman M.R. (1973) The osmotic potential of polyethylene glycol 6000. Plant Physiology. 51: 914-916.
Momoh E.J.J., Zhou W.J. and Kristiansson B. (2002) Variation in the development of secondary dormancy in oilseed rape genotypes under conditions of stress. Weed Research. 42: 446-45
Nambara E., Okamoto M., Tatematsu K., Yano R., Seo M. and Kamiya Y. (2010) Abscisic acid and the control of seed dormancy and germination. Seed Science Research. 20: 55–67
Nee G., Obeng-Hinneh E., Sarvari P., Nakabayashi K. and Soppe W.J.J. (2015) Secondary dormancy in Brassica napus is correlated with enhanced BnaDOG1transcript levels. Seed Science Research. 25: 221 – 229.
Pekrun C., Lutman P.J.W. and Baeumer K. (1997) Germination behaviour of dormant oilseed rape seeds in relation to temperature. Weed Research. 37: 419-431.
Pekrun C., Lutman P.J.W. and Baeumer K. (1997) Induction of secondary dormancy in rape seeds (Brassica napus L.) by prolonged imbibition under conditions of water stress or oxygen deficiency in darkness. European Journal of Agronomy. 6: 245-255.
Price J.S., Hobson R.N., Neale M.A. and Bruce D.M. (1996) Seed losses in commercial harvesting of oilseed rape. Journal of Agricultural Engineering Research. 65: 183–191.
R Core Team (2014). R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. URL http://www.R-project.org/.
Roberts H.A. and Feast P.M. (1972) Fate of seeds of some annual weeds in different depths of cultivated and undisturbed soil. Weed Research. 12: 316–324.
Shirani rad A.M. (2012) The study of agronomical traits of spring rapeseed cultivars in condition of different plantings dates (Karaj region in Iran). Annals of Biological Research: 3 (9): 4546-4550 (in Persian).
Squire G.R., Breckling B., Pfeilstetter A.D., Jorgensen R.B., Lecomte J., Pivard S., Reuter H., Young M.W. (2011) Status of feral oilseed rape in Europe: its minor role as a GM impurity and its potential as a reservoir of transgene persistence. Canada Environmental Science and Pollution Research. 18:111–115.
Thole H., Dietz-Pfeilstetter A. (2012) Marker-Assisted identification of oilseed rape volunteers in oilseed rape (Brassica napus L.) fields. DOI: 10.5073/jka.2012.434.044.
Weber E.A., Frick K., Gruber S., Claupein W. (2010) Research and development towards a laboratory method for testing the genotype predisposition of oilseed rape (Brassica napus L.) to secondary dormancy. Seed Science and Technology. 38: 298-310.