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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Journal of Ornamental Plants
- نوع مقاله: Journal Article
- کلمات کلیدی: Variation,hybridization,Cormlet,Progenies
- چکیده: 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.
- چکیده انگلیسی: 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.
- انتشار مقاله: 28-05-1398
- نویسندگان: Mohammad Hossein Azimi,Behzad Edrisi,Mohammad Ali Khalaj
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Horticultural Science and Technology
- نوع مقاله: Journal Article
- کلمات کلیدی: Heterosis,German iris,hybridization,phenotypic variation,progeny
- چکیده:
- چکیده انگلیسی: To produce new, high-quality offsprings, we generated two cross combinations in Iris germanica. Three parental plants were selected after preliminary screening of commercial traits in different cultivars. Fourteen quantitative traits mostly related to the flower organ were investigated on 15 progenies and three parental plants in a randomized complete block design with three replications. Significant positive and negative correlations were observed among different studied attributes at 0.01 and 0.05 probability. The highest positive (+0.86) and negative (-0.76) correlations was recorded between diameter of flowering branch with crown diameter as well as peduncle length, respectively. Cluster analysis using Ward’s method separated most of the progenies from the parental plants based on evaluated morphological characteristics. However, some of the progenies were grouped with their maternal parent. In PCA analysis, five factors explained 87.84% of the total variations; crown diameters as well as diameter of flowering branch were predominant in the first component (34.19%). Some promising progenies with interesting characteristics were observed and several hybrid plants were superior to their parents and showed positive heterosis over their parents. Progenies NIOP5 and NIOP8 were superior in the most studied attributes, therefore, they suggested for further investigations which can be used in breeding programs. Progenies showed a wider range for flower diameter, peduncle thickness, bush height, as well as inner and outer tepal dimensions. Flower color also showed wider range in the progenies and purple, violet and white colors were the most frequent colors in the hybrid plants, while lilac color was the rarest one. Results of our investigation revealed that intervarietal hybridization is an effective way to contribute to the phenotypic variation in the iris flower for producing new plant materials for breeding purposes as well as releasing new cultivars. The inheritance of some of the traits identified in this study will be important for improving plant architecture in German iris plant.
- انتشار مقاله: 15-12-1396
- نویسندگان: Mohammad Hossein Azimi,Maryam Karimi Alvijeh,Abdolkarim Zarei
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Horticultural Science and Technology
- نوع مقاله: Journal Article
- کلمات کلیدی: Genetic diversity,Iris,Jaccard similarity coefficient
- چکیده:
- چکیده انگلیسی: Iris belongs toIridaceae family and it is monocotyledon. Iris is one of the important ornamental and medicinal plants. 34 iris genotypes (14 species) collected from different provinces of Iran were planted at National Institute of Ornamental Plants (NIOP) Iran. All of the species evaluated for 15 quantitative traits and 30 qualitative traits. Results showed that the highest positive correlation was between inner tepal length and width and the lowest of this correlation was between crest length and width. Cluster analysis using Ward similarity coefficient divided Iris species into three clusters. Also the highest Nei’s genetic distance based on qualitative traits was between I. iberica and I. fosterana and the lowest was between I. germanica and I. paradoxa. The maximum genetic diversity was in Khorasan Razavi populations, and the minimum was in Khorasan (North). According to Shannon index, I. spuria and I. germanica species had the maximum level of genetic diversity. Cluster analysis according to qualitative traits by Jaccard similarity coefficient and UPGMA classified the 34 genotypes into four groups. Classification of populations based on quantitative traits was not similar to classification based on qualitative traits and they were not similar to geographical distribution.
- انتشار مقاله: 13-06-1393
- نویسندگان: Mohammad Hossein Azimi,Zahra Tahernezhad,Mohammad Javad Zamani
- مشاهده