Abstract
This research was conducted underAnkaraconditions during 1996-1997 years with Tokak 157/37, Cumhuriyet 50,Ankara93, Obruk 86 and Kavak two-rowed barley cultivars, to determine the relations among yield components which were mainly effective on grain yield per spike and grain yield per area by using correlation and path analysis technique. Moreover, the effectiveness ratios of these components on grain yield were determined. According to the results of the research; it could be concluded that upper internode length had high positive effects on both grain yield and grain yield per spike. The direct effects of flag leaf sheath length, upper internode length without sheath, the number of grains per spike, spike length, time to heading and number of days of heading-maturity on grain yield and grain yield per spike were statistically significant. The effects of upper internode length without sheath and flag leaf sheath length were negatively. Therefore, those characteristics have major importance as selection criteria in barley breeding.
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