بررسی و انتخاب در توده ها و نسلهای درحال تفکیک در گندم نان و آزمایش مقایسه عملکرد مقدماتی

In this study ,93 F2 population which had been received from karaj and 791 F3,F4,F5,F6,F7 and F8 were evaluated under space planting and Mist irrigation conditions. During growing stages, each plant of population and generations were evaluated and the plants of each generation with best agronomic characters, steress tolerant and diseases resistant were selected. The selected plants on the basis of Modified bulk pedigree method were separately harvested and the seed selection for each plant were also used. At finally the 89 populations from F2, 101 accessions from F3, 41 single plants from F4, 189 single plants from F5 and 210 single plants from F6 were selected for evaluating, in F3, F4, F5, F6 and F7 of future year respectively. Although 76 number of pure line with desirable agronomic characters and disease resistance from F6 to F8 were selected for evaluating in priliminary yield trial of Ardabil Agricultural research station. For obtaining the high yield potential with high stress tolerance and desirable agronomic characters and Identifying the desirable genes of bread wheat varieties this experiment which was entitled study on bread wheat yield trial of station with 140 pure lines obtained from segregating generations of bread wheat of Agricultural and Natural Resources Research Station of Ardebil during 2002-2003 growing year were evaluated in 198 experimental plot during 2003- 2004 growing season. Mentioned lines were evaluated on un- replicated yield trial with two checks (Shahriare and Gaspard), so 61 bread wheat Lines with desirable agronomic characters, high yield potential, diseases and a biotic stress tolerance for more evaluating in advance yield trials of future year were selected.

Keywords:

گندم نان , نسل های در حال تفکیک , مقایسه عملکرد مقدماتی , کرج , ایستگاه تحقیقات کشاورزی اردبیل , روش بالک تغییریافته , روش پدیگری , مقاومت به بیماری ها , زنگ زرد , زنگ قهوه ای , مقاومت به ریزش , ورس , اقلیم سرد