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Browsing by Author "Ege, H."

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    Article
    The Effect of Terpal Plant Growth Regulator on Yield and Yield Components in Barley
    (TUBITAK, 1997) Sönmez, F.; Ege, H.; Okut, H.
    This research was conducted in 1987-1988 at Department of Agronomy, Faculty of Agriculture, University of Ege. The aim of this research was to study the effects of Terpal plant growth regulator on yield and yield components of four barley cultivars. For this purpose. 0 and 2 It/ha dosages of Terpal plant growth regulator was applied on barley cultivars Kocaoǧlu, Tokak-157/37, Quantum and Cumhuriyet-50 in tillering (Feeks scale-4) and shooting (Feeks scale-7) stages. The path and stepwise regression analysis techniques were applied to data, to determine the causal relations and traits that are more effective to explain on changes of variation grain yield. In conclusion from both path and stepwise regression analysis that the number of spike per m2 among all yield components is most effective factor on the variation in grain yield of barley cultivars.
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    The Relationships Among Grain Yield and Some Yield Components in Tir Wheat
    (TUBITAK, 1999) Sönmez, F.; Ülker, M.; Yilmaz, N.; Ege, H.; Bürün, B.; Apak, R.
    Field experiments were conducted in 1994 and 1995 in Van in order to study the relationships between grain yield and yield componets, and the interrelationships among these yield components and other characteristics in Tir wheat. In this research, heading duration, the number of spikes per m2, grain filling period, the number of grain per spike, grain weight, and grain yield were studied. Direct and indirect effects of the yield components (the number of spikes per m2. the number of grain per spike, and grain weight) on grain yield were found by Path coefficient analysis. Direct and indirect effects of other characteristics on these components were also determined. The direct effects, obtained in the Path coefficient analysis, indicated that grain yield depended mainly upon spike number per m2 and secondly upon the grain number per spike. Grain weight showed less influence. On the other hand, duration had a highly negative influence on the grain filling period. At theend of the research, it has been found possible to increase grain yield when spike number per m2 used as a selection criterion in Tir wheat.