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بررسی ژنتیکی طول سنبله گندم نان در جمعیت متنوع حاصل از لاین Roshan-D-01 ×رقم روشن | ||
به زراعی کشاورزی | ||
مقاله 5، دوره 25، شماره 3، شهریور 1402، صفحه 575-585 اصل مقاله (1.17 M) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/jci.2023.352803.2773 | ||
نویسندگان | ||
مریم درانی نژاد1؛ علی کاظمی پور2؛ محمد قادر قادری3؛ علی اکبر مقصودی مود4؛ روح اله عبدالشاهی* 5 | ||
1گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان. ایران. رایانامه: m.dorraninejad@agr.uk.ac.ir | ||
2گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان. ایران. رایانامه: ali.kazemi@uk.ac.ir | ||
3گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه بیرجند. ایران. رایانامه: mghaderi@birjand.ac.ir | ||
4گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان. ایران. رایانامه: maghsoudi.aa@uk.ac.ir | ||
5نویسنده مسئول، گروه مهندسی تولید و ژنتیک گیاهی، دانشکده کشاورزی، دانشگاه شهید باهنر کرمان. ایران. رایانامه: abdoshahi@uk.ac.ir | ||
چکیده | ||
هدف: هدف این پژوهش بررسی ژنتیک اندازه سنبله در یک جمعیت ایزوژن نزدیک برای صفات اندازه سنبله و تعداد سنبلچه در سنبله بود. روش پژوهش: در برنامه بهنژادی گندم نان با هدف انتقال صفت ریشکداری از رقم مهدوی به روشن، در نسل دوم تلاقی برگشتی سوم (BC3F2) یک بوته با سنبله بزرگ مشاهده شد. این بوته پس از چندین نسل خودگشنی و گزینش برای طول سنبله خالصسازی شد و لاین Roshan-D-01 نام گرفت. پس از تلاقی برگشتی چهارم لاین Roshan-D-01 با والد تکراری (رقم روشن) و یک نسل خودگشنی، یک جمعیت ایزوژن نزدیک (BC4F2) برای طول سنبله ایجاد شد. طول سنبله و صفات مرتبط با آن در این جمعیت در مزرعه تحقیقاتی دانشگاه شهید باهنر کرمان در سال زراعی 1400-1399 مطالعه شد. یافتهها: طول سنبله با وراثتپذیری 61/0 و پاسخ به گزینش 03/14 درصد، همبستگی منفی و معنیداری با تعداد روز تا سنبلهدهی (**44/0-=r) داشت. در صورتی که با بقیه صفات همبستگی مثبت و معنیدار نشان داد. بین صفات بررسیشده در این مطالعه سطح برگ پرچم با وراثتپذیری عمومی 53/0 و همبستگی مثبت و معنیدار با طول سنبله (**60/0=r) بیشترین تنوع فنوتیپی و ژنوتیپی و پاسخ به گزینش را نشان داد. نتیجهگیری: همبستگی مثبت سطح برگ پرچم با صفات مرتبط با سنبله بیانگر اهمیت این صفت در بهبود عملکرد دانه گندم بود. جمعیت حاضر بهدلیل تنوع ژنتیکی بالا و تفکیک متجاوز مشاهده شده، میتواند بهعنوان منبع ژنتیکی قابل اطمینانی در برنامههای بهنژادی گندم با هدف افزایش تعداد دانه در سنبله و بهبود پتانسیل عملکرد دانه مطرح باشد. | ||
کلیدواژهها | ||
تعداد دانه در سنبله؛ تعداد سنبلچه؛ تنوع؛ سنبله بزرگ | ||
عنوان مقاله [English] | ||
Genetic evaluation of bread wheat spike length in diverse population derived from Roshan-D-01 line× Roshan cultivar | ||
نویسندگان [English] | ||
Maryam Dorrani-Nejad1؛ Ali Kazemi Pour2؛ Mohammad Ghader Ghaderi3؛ Ali Akbar Maghsoudi Moud4؛ Roohollah Abdoshahi5 | ||
1Department of Plant Genetics and Production Engineering, Faculty of Agriculture, Shahid-Bahonar University, Kerman, Iran. E-mail: m.dorraninejad@agr.uk.ac.ir | ||
2Department of Plant Genetics and Production Engineering, Faculty of Agriculture, Shahid-Bahonar University, Kerman, Iran. E-mail: ali.kazemi@uk.ac.ir | ||
3Department of Plant Genetics and Production Engineering, Faculty of Agriculturer, Birjand University, Birjand, Iran. E-mail: mghaderi@birjand.ac.ir | ||
4Department of Plant Genetics and Production Engineering, Faculty of Agriculture, Shahid-Bahonar University, Kerman, Iran. E-mail: maghsoudi.aa@uk.ac.ir | ||
5Corresponding Author, Department of Plant Genetics and Production Engineering, Faculty of Agriculture, Shahid-Bahonar University, Kerman, Iran. E-mail: abdoshahi@uk.ac.ir | ||
چکیده [English] | ||
Objective: World food security depends on two major cereal crops, wheat and rice. Where wheat is more important for its market value and production amount. Grain yield is determined by the achievement and distribution of assimilates in sink organs. Sink size in wheat depends on the number of spikelets per spike, grains number per spikelet as well as the grain weight. Hence, increasing spikelet number and sink size is one of the most important breeding targets of wheat. The object of the present study was investigation the genetic of spikes and spikelets in a divers bread wheat population for number of spiklets per spike. Methods: In a bread wheat breeding program for transferring the awn character from Mahdavi to Roshan cultivar, in the second generation of the third backcross (BC3F2), a single plant with large spikes was observed. The mentioned genotype was purified after several selfing. The pure line was named as Roshan-D-01. After the fourth backcross of Roshan-D-01 with the recurrent parent (Roshan) and a selfing generation, a near isogenic population (BC4F2) was developed to study spike length. Spike length along with its related traits was studied in the current population at the research field of Shahid-Bahonar University of Kerman, during growing seasons of 2020-2021. Results: The spike length with the heritability of 0.61 and the response to selection of 14.03% showed a negative significant correlation with days to heading (r=-0.44**) and a positive significant correlation with other traits. Days to heading had a negative significant correlation with all studied traits at this research. This result showed the positive effect of early heading on spike related traits. Among studied traits, flag leaf area with general heritability of 0.53, positive significant correlation with spike length (r=0.60**), the highest Phenotypic and genotypic diversity (PCV=28.5 and GCV=20.69), showed the most response to selection (%R=25.45). The positive correlation between flag leaf area and spike related traits indicate the importance of flag leaf area in improving wheat grain yield. Distribution frequency graph of progenies for spike length, spikelet number per spike and grains number per spike showed that these traits have quantitative inheritance and follow the normal distribution. Transgressive segregation observed for studied traits and the presence of elite lines, in comparison with parents, in the current population allows the introduction of large spikes genotypes with high grains number per spike to develop high-yielding cultivars. Conclusion: Due to high diversity and transgressive segregation observed in the present study, the current population can represent a rich source of spike morphology for use in wheat breeding programs aimed for increasing grain yield potential via increasing grain number. Negative correlation of days to heading with spike related traits indicates the positive effect of early heading on grain yield of bread wheat, especially under end season drought and heat stress conditions. Due to the high, positive and significant correlation between the spike length and flag leaf area, selection for larger flag leaf area could improve grain yield. | ||
کلیدواژهها [English] | ||
Diversity, Grains number per spike, Large spike, Spikelet number | ||
مراجع | ||
موسوی، سیده فاطمه؛ سیاهپوش، محمدرضا و سرخه، کریم (1400). اثر تاریخ کشت و تنش گرمای انتهای فصل بر صفات فنولوژیک و اجزای عملکرد ژنوتیپهای گندم نان. تولیدات گیاهی، 44 (2)، 170-157.
نادری، احمد و اصلاحی، محمدرضا (1398). ارزیابی حساسیت برخی مراحل فنولوژیکی ژنوتیپهای گندم در پاسخ به تنش خشکی. تولیدات گیاهی، 42 (1)، 148-133.
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