Biotech Studies 2016, Vol 25, Num, 1     (Pages: 110-116)

Effects of Different Seed Sizes on Grain Yield, Yield Components and Quality of Some Bread Wheat (T. aestivum L.) Varieties


1 Trakya Tarımsal Araştırma Enstitüsü, Edirne DOI : 10.21566/tarbitderg.280294 - This study was conducted in the experimental field of Trakya Agricultural Research Institute in a randomized split blocks design with four replications in two years (2007-2008 and 2008-2009 growing seasons). The experiment was set up cultivars (Flamura-85, Gelibolu, Kate A-1 ve Guadalupe) as main plot and four different seed size (above 2.8 mm, among 2.8-2.5 mm, among 2.5-2.2 mm and among 2.2-2.0 mm) as subplot. The objective of the study was to determine the effects of four different seed sizes on grain yield, yield components and quality in bread wheat cultivars which have four different kernel weight. According to the results obtained from analyses, differences between cultivars in terms of grain yield, number of spike per square meter, number of kernel per spike, thousand kernel weight, test weight and protein rate were found statistically significant. While grain yield, thousand kernel weight and test weight were affected by the seed size, number of spike per square meter and number of kernel per spike weren`t affected by the seed size in both years. The grain yields of cultivars went up with increasing seed size. While the highest yield was obtained with 2.8 mm and above seed size, between 2.0-2.2 mm seed size gave the lowest yield. Increasing seed size in cultivars having high kernel weight caused greater yield increase more than in cultivars with low kernel weight. Based on the results of the study, above 2.5 mm seed size in Gelibolu and Flamura-85, above 2.2 mm in Kate A-1 and above 2.0 mm seed size in Guadalupe cultivars were suggested for Trakya region. Keywords : Wheat (T. aestivum L.) bread, seed size, grain yield, quality component