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Appraising of barley promising lines relying on high grain yield and desirable agronomy traits in rainfed conditions using SIIG and ASIIG techniques | ||
Iranian Journal of Genetics and Plant Breeding | ||
دوره 10، شماره 1 - شماره پیاپی 19، تیر 2021، صفحه 11-30 اصل مقاله (748.54 K) | ||
نوع مقاله: Research paper | ||
شناسه دیجیتال (DOI): 10.30479/ijgpb.2022.17153.1315 | ||
نویسندگان | ||
Ibrahim Hemadesh1؛ Jafar Ahmadi* 1؛ Sedigheh Fabriki-Ourang1؛ Behrouz Vaezi2 | ||
1Department of Genetics and Plant Breeding, Imam Khomeini International University, Qazvin, Iran. | ||
2Kohgiluyeh-Boyerahmad Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Yasuj, Iran. | ||
تاریخ دریافت: 04 اردیبهشت 1401، تاریخ بازنگری: 28 تیر 1401، تاریخ پذیرش: 29 تیر 1401 | ||
چکیده | ||
This study aimed to investigate the genetic diversity of 140 barley advanced lines, using Selection Index of Ideal Genotype (SIIG) and Adjusted Selection Index of Ideal Genotype (ASIIG) indicators for introduction and cultivation of suitable lines in rainfed conditions. The highest coefficient of variation was related to the type of spike, flag leaf area, seeds per spike, peduncle length, flag leaf width, and early growth vigor. The stepwise regression showed that the early growth vigor, 1000-seeds weight, spike type, days to heading, plant height, number of seeds per spike, and flag leaf length were the most critical components, which affect the grain yield under the rainfed conditions. The results of SIIG showed that lines 4, 43, 47, 40, 70, 96, 137, 3, 57, and 45 were the best lines with the highest SIIG values. The SIIG index divided all lines into seven groups; the average grain yield of lines in groups I and II were higher than the average grain yield of control cultivars and the other groups. According to ASIIG plots, lines 47, 3, 43, 45, 137, 96, and 40 were placed in the ideal quarter. Finally, the SIIG and ASIIG were compatible in selecting the best lines. ASIIG was more suitable for separating the ideal lines, because it participated all traits commensurate with their importance in the end product quantity and quality. | ||
کلیدواژهها | ||
Drought stress؛ Genetic diversity؛ PCV؛ Stepwise regression؛ TOPSIS model | ||
عنوان مقاله [English] | ||
ارزیابی لاین های امیدبخش جو براساس عملکرد بالا و صفات زراعی مطلوب در شرایط دیم با استفاده از تکنیک های SIIG و ASIIG | ||
نویسندگان [English] | ||
ابراهیم حمیدش1؛ جعفر احمدی1؛ صدیقه فابریکی اورنگ1؛ بهروز واعظی2 | ||
1گروه ژنتیک و اصلاح نباتات، دانشگاه بین المللی امام خمینی (ره)، قزوین، ایران. | ||
2مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی کهگیلویه و بویراحمد، سازمان تحقیقات، آموزش و ترویج کشاورزی (AREEO)، یاسوج، ایران. | ||
چکیده [English] | ||
این مطالعه با هدف بررسی تنوع ژنتیکی 140 لاین پیشرفته جو از نظر عملکرد و همچنین ادغام چند صفت مهم مورفولوژیکی برای ارزیابی بهترین ژنوتیپ با استفاده از شاخص انتخاب ژنوتیپ ایده آل (SIIG) و شاخص انتخاب ژنوتیپ ایده آل تعدیل یافته (ASIIG) برای معرفی و کشت لاین های مناسب در شرایط دیم انجام شدند. بیشترین ضریب تغییرات مربوط به نوع سنبله، سطح برگ پرچم، تعداد بذر در سنبله، طول پدانکل، عرض برگ پرچم و قدرت رشد اولیه بود. رگرسیون گام به گام نشان داد که قدرت رشد اولیه، وزن هزار دانه، نوع سنبله، تعداد روز تا ظهور سنبله، ارتفاع بوته، تعداد دانه در سنبله و طول برگ پرچم مهمترین مولفهها هستند که بر عملکرد در شرایط دیم تأثیر میگذارند. نتایج SIIG نشان داد که لاین های 4، 43، 47، 40، 70، 96، 137، 3، 57 و 45 بهترین لاین ها با بالاترین مقادیر SIIG بودند. شاخص SIIG همه لاین ها را به هفت گروه تقسیم کرد؛ میانگین عملکرد دانه لاینها در گروههای I و II بیشتر از میانگین عملکرد ارقام شاهد و سایر گروهها بود. مقدار ASIIG برای لاین 47، 907/0 بود که به عنوان ژنوتیپ اصلی ایده آل در نظر گرفته شد. لاین های 3، 4، 43، 45، 21، 96، 137، 40 و 54 به دلیل دارا بودن مقادیر ASIIG بالا و فاصله نزدیک از ژنوتیپ ایده آل اصلی در رتبه های بعدی قرار گرفتند. همچنین طبق نمودارهای ASIIG، لاین های 47، 3، 43، 45، 137، 96 و 40 در چارک ایده آل قرار گرفتند. | ||
کلیدواژهها [English] | ||
تنش خشکی, تنوع ژنتیکی, PCV, رگرسیون گام به گام, مدل TOPSIS | ||
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