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ارزیابی واکنش ژنوتیپ های گندم دوروم به تنش خشکی آخر فصل | ||
| پژوهش های کاربردی زراعی | ||
| مقاله 2، دوره 33، شماره 1 - شماره پیاپی 126، فروردین 1399، صفحه 23-43 اصل مقاله (966.92 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/aj.2019.125259.1384 | ||
| نویسنده | ||
| غلامحسین احمدی* | ||
| بخش تحقیقات زراعی-باغی مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی کرمانشاه، سازمان تحقیقات، اموزش و ترویج کشاورزی، کرماتشاه، ایران | ||
| چکیده | ||
| تنش خشکی آخر فصل از مهمترین عوامل تاثیر گذار در تولید گندم دوروم (Triticum turgidum var. durum Desf.) است. لذا با هدف شناسایی لاینهای جدید متحمل به این تنش، تعداد 154 لاین گندم دوروم در شرایط آبیاری بهینه و تنش خشکی آخر فصل (قطع آبیاری از مرحله آبستنی یا Z=4.5) در ایستگاه تحقیقات کشاورزی اسلام آباد غرب طی سالهای 92-1391 و 93-1392 کشت شدند. براساس عملکرد دانه دو محیط، شاخصهای تحمل به خشکی محاسبه شد. بین لاینهای مورد بررسی تنوع بالایی برای عملکرد و شاخصهای تحمل به خشکی مشاهده شد. تجزیهخوشهای لاینها را در 6 گروه جای داد. تعداد 12 لاین با قرار گرفتن در یک گروه، براساس بیشتر شاخصهای تحمل به خشکی و عملکرد دو محیط نسبت به دیگر گروهها برتر بودند. نتایج تجزیهبهمولفههایاصلی لاین-های برتر نشان داد لاینهایG41، G116، G123 و G199 بهترین لاینها برای تحمل به خشکی آخر فصل بوده و در شرایط آبیاری بهینه نیز عملکرد مطلوبی داشتند. از طرف دیگر لاینهای G50، G46 و G38 برای شرایط بهینه مناسب بوده و واجد تحمل به تنش آخر فصل نیز بودند. لاینهای G29 وG157 هرچند در بین لاینهای برتر بودند، اما تحمل به تنش پایینی نشان دادند و برای شرایط بهینه مناسب بودند. لاینهای G105، G93 و G159 به شرایط تنش انتهایی متحمل بودند، اما در شرایط بهینه عملکرد پایینی داشتند. بطورکلی چهار لاین به شماره های G41، G116، G123 وG199، بویژه لاین G116، پتانسیل تولید رقم برای تنش خشکی انتهای فصل را داشته و برای شرایط منطقه مورد مطالعه یا مناطق مشابه قابل توصیه می باشند. | ||
| کلیدواژهها | ||
| گندم دوروم؛ تنش خشکی؛ تنش خشکی آخر فصل | ||
| عنوان مقاله [English] | ||
| Evaluation of durum wheat (Triticum durum Desf.) lines response to terminal drought stress | ||
| نویسندگان [English] | ||
| Gholamhossein Ahmadi | ||
| Horticulture crops research dep., Kermanshah agricultural and natural resource research and education center, ARREO, Kermanshah, Iiran | ||
| چکیده [English] | ||
| Introduction: Wheat, bread and durum, is most important crop of Iran and durum wheat has a historical cultivation background in country. Pasta and macaronis industries of country need 400000 ton of durum annually. To cover this tonnage, releasing and introducing new and high yielding durum cultivar to wheat growers is crucial. On other hand, drought stress, especially terminal drought stress, TDS, is one of the most important factors affecting cultivation of wheat in various environments (Kilic and Yagbasanlar, 2010) and usually happened during filling period in Mediterranean countries (Golabadi et al., 2006). Totally, drought resistance is an erratic and complex trait and its effects depend on growth stage of crop. Lack of drought tolerance cultivars plus drought periods during wheat growing season are main reasons of Iran wheat production fluctuation. Drought resistance indices widely used by scientist to screening and selection drought tolerate wheat genotypes (Bennani et. al., 2017). So to combating these hazard and mitigate effects of water shortage and drought stress on durum wheat production, identifying and releasing new terminal drought tolerate durum wheat cultivars, present study was conducted. Material and methods: The154 durum wheat lines originated from International Maize and Wheat Improvement Center (CIMMYT) plus Syrian4 (Saji) cultivar as durum check were investigated under normal irrigation and TDS conditions at Islamabad Agricultural Research Station over 2013-14 and 2014-15 cropping period. Each plot consisted of 2 rows, 2 m length with 0.3m inter row spaces. Cropping density was 450 seed per m2. Sowing was done by hand. Irrigation cut at boating stage (Z = 4.5) of crop. The grain yield, GY, (Kg/ha) of two years was used to calculating 21 drought tolerance indices namely MP, TOL, SSI, STI, GMP, YI, DI, ATI, SSPI, SNPI, MRP, REI, MSTIk1, MSTIk2, HARM, Red, RDI, GM, DTE. The SPSS software was used for cluster analysis and drawing of bipolot. Result and discussion: High variation was observed among the studied lines for GY and drought resistance indices. The cluster analysis by using UPGMA method and square of Euclidean distance, sorted evaluated lines in 6 groups. According to most drought resistance indices and the performance in both environments, the 12 genotypes namely g29, g38, g41, g46, g50, g93, g105, g116, g123, g157, g159 and g199 located at first group and showed remarkable advantages over other groups. The results of the analysis of the main components indicated that g116, g199, g41 and g123 lines were the best genotypes for TDS, which showed good performance under irrigated conditions also. On the other hand, the g50, g46 and g38 lines were the best ones for optimal conditions that showed TDS resistance also. The g29 and g157 lines were among superior lines with less resistance to TDS suitable for optimal conditions, whereas g105, g93 and g159 lines were relatively resistance to TDS with low yield under normal irrigation. Totally four genotypes, g41 (STORLOM/3/RASCON_37/TARRO_2//RASCON_37/4/ D00003A…), g116 (SIMETO/4/DUKEM_1//PATKA_7/YAZI_1/3/PATKA_7/YAZI_1…) g123 (ADAMAR _15/PLATA_18/3/SORA/2*PLATA_12//SOMAT_3/6/LIRO…) and g199 (PLATA_10/6/MQUE/4/ USDA573//QFN/AA_7/3/ALBA-D…), with emphasis on g116 lines, showed potential to mention as candidates to releasing as new cultivars, recommending and presenting to wheat growers of TDS conditions of area of study and similar condition. | ||
| کلیدواژهها [English] | ||
| Durum wheat, Drought stress, Terminal drought stress | ||
| مراجع | ||
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