Asian Journal of Plant Sciences1682-39741812-5697Asian Network for Scientific Information10.3923/ajps.2008.607.610TasB. CelikN. 6200876This research was conducted in order to determine the
vernalization periods of some winter wheat varieties improved and grown
widely on transition regions of Turkey and having vernalization problems
on some parts of these regions in some years. The research was carried
out in outdoor conditions of Department of Field Crops, Faculty of Agriculture,
Uludag University in Bursa. Bezostaja-1, Marmara-86 and Pehlivan varieties
of winter wheat were used as plant material in the experiment. Seeds of
the varieties were exposed to five vernalization periods (V0,
V14, V28, V42 and V56 days).
After vernalization, seeds were sown into pots on March 15 in each experiment
year. In the experiment, parameters such as phyllochron, heading period
and grain weight/spike were determined. According to the two-year results,
V0 (control) and V14 did not affect the parameters
(except phyllochron) in Bezostaja-1 and Pehlivan varieties. On the other
hand, V0 did not have effect on the parameters (except phyllochron)
of Marmara-86 variety. Varieties indicated differences in terms of the
parameters determined in the experiment. The longer the vernalization
period was, the shorter the phyllochron period and the heading period.
In this study, grain weight/spike was used as criterion for determination
of vernalization requirements of cultivars since this component is one
of the most important components related to the seed yield. As a result,
it was determined that Marmara-86 was less sensitive to cold treatment
than other varieties and its proper vernalization requirement was 28 days
(V28). The most suitable vernalization period for Bezostaja-1
and Pehlivan was found to be 42 days (V42). Attention must
be paid when these cultivars are intended to be grown on cooler or warmer
areas within or out of the transition regions.]]>Brooking, I.R. and P.D. Jamieson,2002792138Cao, W. and D.N. Moss,199183179179Ekinci, I. and Y.S. Terzioglu,199822303312Gonzalez, F., G. Slafer and D. Miralles,200274183195Kirby, E.J.M.,1992118271278Mahfoozi, S., A.E. Limin and D.B. Fowler,20014110061011Natrova, Z. and L. Natr,199133417429Ortiz, F., M.G. Mosaad, V. Mahalakshmi and R.A. Fischer,1995114505509Petroczi., I.M. and J. Matuz,200246209210Rawson, H.M., M. Zajac and L.D.J. Penrose,199857289300Slafer, G.A.,1996126403419Slafer, G.A. and H.M. Rawson,199439111117Wang, S.Y., R.W. Ward, J.T. Ritchie, R.A. Fischer, U. Schulthess and S.Y. Wang,1996446772Porter, J.R. and M. Gawith,1999102336