بررسی لاین ها و ارقام جو بهاره در آزمایشات بین المللی مقایسه عملکرد

In order to investigate the quantitative and the qualitative traits of lines and cultivars of spring barley in international yield trials replicated and observational experiments were carried out at Agricultural Research Station ofGonbad in 2002. [n J.B.O.N., 377 lines and cultivars were sown in 2 two-meter long rows, spaced 30 centimeters apart without replication and 37 lines were selected for the next year's advanced trials. Sahra was sown after every 10 lines as check,: J.B.Y,T. consisted of 25 lines and cultivars and it was carried out in an alpha lattice layout with two replications, Each plot consisted of 6 three-meter long rows with 20 centimeters between rows. There was not a significant difference between the studied lines for yield but lines 2 and 13produced 6.225 and 6.033 ton ha -J, respectively and they outyielded the check Sahra (5.750 ton ha -I). Keywords: barley, yield trial, lines and cultivars

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