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Influence of drought stress on grain composition and cooking attributes of Iranian rice mutants | ||
| Iranian Journal of Genetics and Plant Breeding | ||
| دوره 11، شماره 1 - شماره پیاپی 21، مرداد 2022، صفحه 21-34 اصل مقاله (840.79 K) | ||
| نوع مقاله: Research paper | ||
| شناسه دیجیتال (DOI): 10.30479/ijgpb.2023.18721.1339 | ||
| نویسندگان | ||
| Mohammad Taher Hallajian* 1؛ Ali Akbar Ebadi2؛ Mojtaba Kordrostami1 | ||
| 1Nuclear Science and Technology Research Institute (NSTRI), Nuclear Agriculture Research School, Karaj, Iran. | ||
| 2Rice Research Institute of Iran (RRII), Agricultural Research Education and Extension Organization (AREEO), Rasht, Iran. | ||
| تاریخ دریافت: 11 اردیبهشت 1402، تاریخ بازنگری: 05 تیر 1402، تاریخ پذیرش: 12 تیر 1402 | ||
| چکیده | ||
| Grain quality in rice plays a critical role in consumer acceptance. This research aimed to investigate the grain physicochemical and cooking characteristics of 18 Iranian rice genotypes under both normal conditions and 35 days of drought stress. Significant differences were observed in the studied traits specially percentage of total conversion, head rice, and broken rice indicating differences in the extent of grain retention and damage during processing among the genotypes under both normal and drought stress conditions. The drought stress markedly influenced the expression of nine cooking and nutritional properties and resulted in decreased total conversion percentage, head rice percentage, and cooked head rice length, while the percentage of broken rice increased considerably across all studied genotypes. Conversely, the impact of drought stress on the rough rice length/width ratio, head rice length/width ratio, and elongation ratio were negligible. Most drought-tolerant promising mutant lines exhibited superior grain physicochemical and cooking properties under both drought stress and normal conditions compared to four well-known Iranian rice landraces and cultivars. Evaluation of the grain physicochemical and cooking properties suggested that two drought-tolerant promising mutant lines, namely TM-B-7-1 and HM-250-E-1-1, could be suitable for final cultivar registration experiments. | ||
| کلیدواژه‌ها | ||
| Cooking and nutritional quality؛ Drought؛ Mutant promising lines؛ Rice (Oryza sativa) | ||
| عنوان مقاله [English] | ||
| تأثیر تنش خشکی بر ترکیب دانه و کیفیت پخت لاین های موتانت برنج ایرانی | ||
| نویسندگان [English] | ||
| محمدطاهر حلاجیان1؛ علی اکبر عبادی2؛ مجتبی کردرستمی1 | ||
| 1پژوهشکده تحقیقات کشاورزی هسته ای پژوهشگاه علوم و فنون هسته ای ایران | ||
| 2گروه پژوهشی اصلاح نباتات مؤسسه تحقیقات برنج کشور | ||
| چکیده [English] | ||
| کیفیت دانه در برنج نقش مهمی در پذیرش مصرف کنندگان دارد. هدف این پژوهش، مطالعه خصوصیات فیزیکوشیمیایی و پخت دانه 18 ژنوتیپ برنج ایرانی شامل 14 لاین برنج موتانت امیدبخش موتانت و چهار رقم برنج بومی و اصلاح شده تحت شرایط نرمال و 35 روز تنش خشکی بود. اختلافات معنی داری در صفات مورد مطالعه بویژه درصد تبدیل کل، دانه سالم و دانه شکسته که نشانگر اختلافات در میزان حفظ و آسیب دانه در خلال فرآوری می باشند، بین ژنوتیپ ها تحت این دو شرایط مشاهده شد. تنش خشکی تأثیر عمیقی بر بیان 9 خصوصیت پخت و غذایی ژنوتیپ های مورد مطالعه داشت و منتج به کاهش درصد تبدیل کل، درصد دانه سالم و طول دانه سالم بعد از پخت گردید در حالیکه درصد برنج شکسته بطور قابل ملاحظه ای در تمام ژنوتیپ های مورد مطاالعه افزایش یافت. برعکس، اثر تنش خشکی بر نسبت طول به عرض شلتوک، نسبت طول به عرض برنج سالم و نسبت طویل شدن قابل چشم پوشی بود. اکثر لاین های امیدبخش موتانت متحمل به خشکی ویژگی های فیزیکوشیمیایی و پخت دانه برتری نسبت به چهار رقم بومی و اصلاح شده مشهور ایرانی در شرایط نرمال و تنش خشکی نشان دادند. ارزیابی خصوصیات فیزیکوشیمیایی و پخت دانه پیشنهاد کرد که دو لاین موتانت امیدبخش متحمل به خشکی موتانت یعنی TM-B-7-1 و HM-250-E-1-1 می توانند برای آزمایشات نهایی ثبت رقم مناسب باشند. | ||
| کلیدواژه‌ها [English] | ||
| کیفیت پخت و غذایی, خشکی, لاین های امیدبخش موتانت, برنج (Oryza sativa) | ||
| مراجع | ||
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