بررسی ارزیابی صفات کمی و کیفی لاین های تریتپکاله در آزمایش مقدماتی و پیشرفته مقایسه عملکرد

This study was conducted for screening and selecting of new high yielding triticale under the conditions of Mashhad Research Station. This research was containing 2 experiments follow: 1) Primary Triticale Yield Trial (PTYT): No. of 64 genotypes of triticale that have been selected from international trials during the last cropping seasons, were evaluated as yield trials in observation nursery. These genotypes were studied in preliminary yield trials, without replication, in comparison with the check (Juanillo 92). 2) Advanced Triticale Yield Trial (ATYT No. 1 & 2): No. of 38 new triticale lines were studied in 2 Randomized Complete Block Design (RCBD). Each experiment consist 18 entry (new lines) and 2 checks (Juanillo 92 and ET-82-15) total 20 entry with 3 replication . Each line or cultivar were planted in 6 row, by distance 20 cm and 6 meter long, then plot size were 7.2 m2 .Final harvesting area was 6 m2 (51.2ا m2). In the Observation Nursery, after each 5 lines 1 check (Juanillo 92) was replicated. After harvesting, the grain yield comparison among new lines and cultivars with checks, was conducted with the curve shaping in observation nursery and analysis variance in replicated experiments, respectively. Results in observation nursery showed that there was higher yielding lines in comparison with the check (Juanillo 92) and 36 superior lines were selected for advanced yield trials in further season (ATYT:1&2). So, the results of analysis of variance in replicated experiments showed that there was no significant differences between lines and checks. Based on Dunkan method grain yield comparison with the check (Juanillo 92) carried out and 18 superior lines were selected for elite yield trials in further season (ERTYT-88). Selected new lines had more grain yield in comparison to the check cultivars and differed in their height, resistance to diseases and lodging, early maturing, which were more suitable than the checks.