انتخاب لاین های امیدبخش برتر جو با استفاده از شاخص های گزینشی مبتنی بر صفات مختلف

نوع مقاله : مقاله پژوهشی

نویسندگان

1 بخش تحقیقات علوم زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی فارس، سازمان تحقیقات، آموزش و ترویج کشاورزی، داراب، ایران

2 موسسه تحقیقات اصلاح و تهیه نهال و بذر ، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران

3 بخش تحقیقات علوم زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی گلستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، گنبد، ایران

4 بخش تحقیقات علوم زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی سیستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، زابل، ایران

5 عضو هیات علمی بخش تحقیقات غلات موسسه تحقیقات موسسه تحقیقات اصلاح و تهیه نهال وبذر، کرج

6 بخش تحقیقات علوم زراعی و باغی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی خوزستان، سازمان تحقیقات، آموزش و ترویج کشاورزی، اهواز، ایران

چکیده

اهداف: هدف از این تحقیق انتخاب لاین‌های برتر جو بر اساس تعدادی از صفات مورفو-فنولوژیکی با استفاده از شاخص‌های مختلف مبتنی بر مدل REML/BLUP و همچنین شاخص SIIG و مقایسه این شاخص‌ها بود.

مواد و روش‌ها: در این تحقیق تعداد 17 لاین امیدبخش به‌همراه دو ژنوتیپ شاهد در قالب طرح بلوک‌های کامل تصادفی با سه تکرار در سه ایستگاه تحقیقاتی شامل زابل، داراب و گنبد کاووس در سال زراعی 1400-1399 ارزیابی شدند.

یافته‌ها: نتایج نشان داد بین مناطق و لاین‌‌های مورد بررسی از نظر همه صفات ارزیابی شده اختلاف معنی‌داری وجود دارد. نتایج REML نشان داد که بیشترین و کمترین مقدار وراثت‌پذیری به‌ترتیب مربوط به وزن هزاردانه و دوره پر شدن دانه است. شاخص MSTI سه ژنوتیپ G9، G2 و G3 و شاخص FAI-BLUP وMGIDI لاین‌‌های G13، G11 و G3 را به‌عنوان برترین لاین‌‌ها از سایر لاین‌‌ها و ژنوتیپ‌های شاهد متمایز کردند. بر اساس نتایج شاخص SIIG، لاین‌‌های ‌G7، G2، G8 و G17 جزو لاین‌‌های برتر بودند و همچنین عملکرد دانه بیشترین همبستگی را با شاخص SIIG نشان داد.

نتیجه‌گیری: به‌طور کلی با مقایسه نتایج به‌دست آمده از شاخص‌های مختلف، لاین‌های انتخابی با شاخص SIIG به-دلیل عملکرد دانه بالا و وزن هزاردانه بیشتر به‌عنوان لاین‌های منتخب برای آزمایشات تکمیلی (مانند ارزیابی سازگاری و پایداری) انتخاب شدند. علاوه براین، لاین‌های انتخابی با استفاده از شاخص‌های FAI-BLUP وMGIDI زودرس و دارای وزن هزار دانه بالا بودند اما عملکرد آنها از هر دو شاهد آزمایش پایین‌تر بود.

کلیدواژه‌ها


عنوان مقاله [English]

Selection of barley superior promising lines using selection indexes of multi-trait

نویسندگان [English]

  • Hassan Zali 1
  • Alireza Pour-Aboughadareh 2
  • Ahmad Gholipour 3
  • Shirali Kohkan 4
  • Ali Barati 5
  • Mehdi Jabari 1
  • Masoome Kheirgoo 3
  • Akbar Marzooghian 6
1 7. Crop and Horticultural Science Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Darab, iran
2 Seed and Plant Improvement Department, Agricultural Research, Education and Extension Organization (AREEO), Karaj, iran
3 Crop and Horticultural Science Research Department, Golestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Gonbad, iran
4 7. Crop and Horticultural Science Research Department, Sistan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Zabol, iran
5 Faculty member of department of cereal research of seed and plant improvement institute, Karaj
6 Crop and Horticultural Science Research Department, Ahvaz Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Ahvaz, iran
چکیده [English]

Background and objectives: The aim of this study was to select of the barley superior lines based on some of morpho-phenological traits using various indices based on REML/BLUP model and as well as the SIIG index and comparison of these indices.

Materials and methods: A set of 17 promising lines along two checks were evaluated in a RCBD with three replications at three research stations including Zabol, Darab, and Gonbad Kavous during the 2020-2021 cropping year.

Results: The results showed that there was a significant difference between the test regions and genotypes in terms of all measured traits. The results obtained by REML model indicated that the highest and lowest heritability values were related to 1000-grain weight and grain filling period, respectively. The MTSI index identified lines G9, G2 and G3 as superior lines, while the FAI-BLUP index identified G13, G11 and G3 as the best lines based on their traits and grain yield. Based on the SIIG index, lines G7, G2, G8 and G17 were identified as the most superior lines.

Conclusion: In general, by comparing the results obtained from different indices, selected lines with SIIG index due to high grain yield and high 1000-grain weight were chosen as selected genotypes for complementary tests. In addition, the selected genotypes using FAI-BLUP and MGIDI indices were early maturity and had a high 1000-grain weight, but their grain yield were lower than both checks of experiment.

کلیدواژه‌ها [English]

  • Ideal genotype
  • genetic parameters
  • mixed model
  • selection indexes
  • REML/BLUP method
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