Evaluation of Genetic Parameters and Cormlet Yield in Gladiolus Offspring
محورهای موضوعی : مجله گیاهان زینتی
Mohammad Hossein Azimi
1
,
Behzad Edrisi
2
,
Mohammad Ali Khalaj
3
1 - Ornamental Plants Research Center (OPRC), Horticultural Sciences Research Institute (HSRI), Agricultural Research, Education and Extension Organization (AREEO), Mahallat, Iran
2 - Ornamental Plants Research Center (OPRC), Horticultural Sciences Research Institute (HSRI), Agricultural Research, Education and Extension Organization (AREEO), Mahallat, Iran
3 - Ornamental Plants Research Center (OPRC), Horticultural Sciences Research Institute (HSRI), Agricultural Research, Education and Extension Organization (AREEO), Mahallat, Iran
کلید واژه: Progenies, Variation, Cormlet, Hybridization,
چکیده مقاله :
The research aimed to produce new genotypes by hybridization. It was conducted in the Ornamental Plants Research Center of Mahallat from 2016 to 2018. Four varieties of gladiolus including ‘Amsterdam’, ‘White Prosperity’, ‘Advance Red’ and ‘Rose Supreme’ were chosen for hybridization. The progenies were evaluated in a randomized complete block design with three replications. The highest heritability in traits was estimated to be 98.46% for cormlet number and diameter and the lowest was 12.90% for crown diameter. These results indicate that most traits have a very low phenotypic and genetic diversity coefficient, indicating that they had lower environmental effects since the progenies were cultivated under similar and controlled conditions. The results of the factor analysis, based on the eight assessed traits, showed that the four factors accounted for 60.90% of the total variance. The first factor captured 22.80% of the variance and among its traits, crown diameter and leaf number had the highest positive coefficients. The progenies OPRC07 and OPRC09 derived from ‘Advance Red’ × ‘White Prosperity’ and ‘Amsterdam’ × ‘Advance Red’ had a significant difference with others and had the highest cormlet weight compared to the progenies tested. The progeny OPRC09 was superior to other cormlets in leaf length, leaf width, stem diameter, leaf number, days to germination, and cormlet weight and diameter. Also, the progeny OPRC04 was superior in cormlet production by producing 2.49 cormlets per seed.
گلایول متعلق به تیره زنبق از مهم‌ترین گل‌های شاخه بریده و پیازی جهان است. این پژوهش با هدف تولید ژنوتیپهای جدید گلایول از طریق دورگ‌گیری در بین ارقام گلایول انجام شد. این تحقیق در قالب طرح بلوک‌های کامل تصادفی در سه تکرار در پژوهشکده گل و گیاهان زینتی در سال 97-95 انجام شد. نتایج تجزیه واریانس صفات بین نتاج (هیبریدها) نشان داد که اختلاف نتاج مورد نظر برای تمام صفات مورد مطالعه در سطح احتمال یک درصد معنی‌دار بود، که بیانگر وجود تنوع گسترده برای همه صفات در نتاج مشاهده می‌شود. نتاج NIOP09 و OPRC07 از تلاقی‘Red Advance’ با ‘White Prosperity’ تفاوت معنی‌داری از نظر وزن پداژک در مقایسه با سایر نتاج داشتند. بیشترین ضریب تنوع فنوتیپی در صفت تعداد پداژک به میزان 17/57 و کمترین در صفت تعداد روز تا جوانه‌زنی بذر به میزان 15/11 درصد به‌دست آمد. بیشترین قابلیت توارث عمومی صفات تعداد پداژک و قطر پداژک به‌ترتیب برابر با 46/98 و 46/95 درصد و کمترین آن برای صفت قطر طوقه به میزان 90/12 درصد برآورد شد. ضرایب همبستگی صفات بین نتاج‌های مختلف نشان می‌دهدکه بیشترین همبستگی مثبت و معنی‌دار مربوط به تعداد برگ با قطر طوقه (93/0+ = r) و کمترین میزان همبستگی هم بین تعداد روز تا جوانه‌زنی با تعداد پداژک (17/0 = r) بود.
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