تولیدات گیاهی

شماره جاری

بر اساس شماره‌های نشریه

بر اساس نویسندگان

بر اساس موضوعات

نمایه نویسندگان

نمایه کلیدواژه ها

درباره نشریه

اهداف و چشم انداز

بانک ها و نمایه نامه ها

پرسش‌های متداول

اخبار و اعلانات

راهنمای تهیه مقاله

فرم های نشریه

فراتحلیل عملکرد ریشه و عملکرد شکر ژنوتیپ های چغندرقند در منطقه کرج

نوع مقاله : علمی - پژوهشی

نویسندگان

1 استادیار، مؤسسه تحقیقات اصلاح و تهیه بذر چغندرقند، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران

2 کارشناس ارشد بیوتکنولوژی گیاهی، پژوهشگاه بیوتکنولوژی کشاورزی ایران، سازمان تحقیقات، آموزش و ترویج کشاورزی، کرج، ایران

چکیده

مطالعات مربوط به ارزیابی اثرات محیط و سال بر عملکرد چغندرقند سابقه ای طولانی در ایران دارد. با این حال، به دلیل پراکندگی و اختلاف موجود در نتایج مطالعات مختلف دستیابی به نتیجه گیری کلی دشوار می باشد. در این مطالعه سعی شده است تا با استفاده از روش فراتحلیل بتوان با تلفیق و آنالیز مجدد یافته های آزمایشات مستقل به نتیجه ای واحد دست یافت. بدین منظور، 21 آزمایش انجام شده در ایستگاه تحقیقات مهندس مطهری در شهر کرج در خلال سال های 1381 تا 1397 مورد بررسی قرار گرفت. شرط لازم برای استفاده از داده های آزمایشات، وجود اطلاعاتی از قبیل تعداد تکرار، داده های مربوط به شاهد آزمایش و داده های مربوط به صفات عملکرد ریشه و عملکرد شکر بود. در میان سال های مورد مطالعه، بیشترین میانگین عملکرد ریشه به میزان 5/89، 1/89 و 8/87 تن در هکتار به ترتیب در سال های 1397، 1385 و 1391 بدست آمد. تلفیق یافته ها نشان داد که در سال های 1385، 1390، 1393 و 1396 عملکرد ریشه چغندرقند به ترتیب 2/19، 3/2، 8/2 و 6/18 درصد روند افزایشی داشته است. نتایج فراتحلیل نشان داد روند افزایش عملکرد شکر ژنوتیپ های چغندرقند نیز مشابه عملکرد ریشه بود با این تفاوت که در سال های 1385، 1390، 1393 و 1396 درصد تغییرات نسبت به روند عملکرد ریشه کمتر بود. یکی از نتایج مهم در این تحقیق، نشان دادن کاهش شیب رابطه منفی بین عملکرد ریشه و عملکرد شکر در ارقام تجارتی می باشد.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Meta-Analysis of Root Yield and Sugar Yield of Sugar Beet Genotypes in Karaj Region

نویسندگان [English]

  • Parviz Fasahat 1
  • Mohsen Aghaeezadeh 1
  • Mozhdeh Kakueinezhad 1
  • Leila Jabbari 2

1 Assistant Professor, Sugar Beet Seed Institute, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran

2 M.Sc. of Plant Biotechnology, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran

چکیده [English]

Abstract
Introduction
Food security is affected by many factors, including increased demand, high input prices, soil degradation, the need to limit greenhouse gas emissions, and increased competition for land and non-potable water. In addition, climate change is expected to have an increasing impact on performance, with statistical analysis of product performance indicating that such an event is taking place. The purpose of plant breeding programs is to develop new varieties with improved characteristics such as yield and nutritional quality. Sugar beet is a root crop specific to temperate regions mainly produced as a sucrose source for human diets. Sugar beet can be planted on any continent except Antarctica, but it performs best in temperate climates. Worldwide production of sugar beet is relatively stable. Studies on the effect of environment and year on sugar beet yield has a long history in Iran. However, it is difficult to achieve a general conclusion due to the dispersion and disparity in the results of various studies. In this study, a meta-analysis method was used to integrate and re-analyze results of independent experiments to achieve a single result.
 
Materials and Methods
Twenty-one experiments carried out at Motahhari Research Station in Karaj, Iran during 2002-17
were evaluated. The effect size was calculated and studies were weighted by replication. Then, the mean effect sizes were estimated followed by confidence intervals, effect size back-transforming and graphs were designed.
 
Results and Discussion
Among studied years, the highest mean root yield of 89.5, 89.1 and 87.8 t ha-1 were obtained in 2018, 2006 and 2012, respectively. Results integration showed that in 2006, 2011, 2014, and 2017, root yield of sugar beet increased by 19.2%, 2.2%, 2.8% and 18.6%, respectively. Different parameters can be used to describe improved agricultural productivity; one of which is the yield increase over time attributed to advances in plant breeding as well as changes in crop operations and environmental conditions (especially climate). Another parameter is the yield potential of a crop described as the performance of a cultivar grown in compatible environments without nutrient and water restrictions and under the effective control of pests, diseases, weeds, and other stresses. Meta-analysis results showed that increase in sugar yield of sugar beet genotypes was similar to the root yield, with the difference that in the years 2006, 2011, 2014 and 2017, variations in percentage was less than root yield. One of the most important results in this study was the illustration of the reduction in slope of negative relationship between root yield and sugar yield in commercial cultivars.
 
Conclusion
In this study, trials were performed under normal conditions and in a disease-free environment. According to the obtained results, use of meta-analysis method in breeding programs to estimate the effect of year on performance along with other statistical methods is recommended.

کلیدواژه‌ها [English]

  • Environment effect
  • Evaluation
  • Year effect
مراجع
References
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تولیدات گیاهی
دوره 44، شماره 3
آذر 1400
صفحه 357-368
فایل ها
هم رسانی
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