ارزیابی نژادگان‌های انار (Punica granatum L.) استان لرستان با استفاده از صفات ریختشناختی و بیوشیمیایی

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی سابق کارشناسی ارشد، دانشکده کشاورزی، دانشگاه لرستان

2 استادیار، دانشکده کشاورزی، دانشگاه لرستان

چکیده

در این پژوهش، شمار 21 نژادگان (ژنوتیپ) انار از چهار منطقۀ استان لرستان با استفاده از صفات ریخت‌شناختی (مورفولوژیک) و بیوشیمیایی ارزیابی شد. نتایج تجزیۀ واریانس نشان داد، بیشتر صفات مورد بررسی به­غیر از درصد پوست، pHو میزان مواد جامد محلول اختلاف معنی­داری در بین نژادگان­ها داشتند. در کل نژادگان­ها، در بین صفات بیشترین تنوع به­ترتیب 11/50، 06/46 و 22/32 درصد برای ویتامین­ث، وزن میوه و میزان اسید به دست آمد. تجزیه به مؤلفه­های اصلی نشان داد، شش عامل اصلی که مقادیر ویژۀ آن‌ها بیشتر از یک بود، توانستند 60/97 درصد از واریانس کل را توجیه کنند. پراکنش نژادگان­ها با استفاده از مؤلفه‌های اصلی نشان داد نژادگان A7ʻ(ʼسوزۀ تاج کوتاه شینه شاهʻ) که بالاترین وزن میوه را داشت، از نظر دو مؤلفۀ اصلی اول و دوم بالاترین ضریب‌های مثبت را داشت. صفات وزن تک‌دانه، وزن کل پوست، وزن ده‌دانه، نسبت طول به عرض برگ، درصد پوست در مؤلفۀ اول (PC1) و صفات طول تاج، اسیدیته، سطح برگ و طول میوه در مؤلفۀ دوم (PC2) قرار گرفتند. در تجزیۀ خوشه‌ای نژادگان­ها به روش وارد، در فاصلۀ اقلیدوسی پنج، نژادگان­های بررسی‌شده در شش خوشۀ اصلی دسته­بندی شدند که نژادگان­های یک منطقه در خوشه­های مختلفی قرار گرفتند که ناشی از تفاوت نژادگان­های درون هر منطقه و همخوانی نداشتن فاصلۀ ژنتیکی و جغرافیایی است.

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of Pomegranate (Punica granatum L.) genotypes in Lorestan province by Morphological and Biochemical Characteristics

نویسندگان [English]

  • Maryam Sepahvand 1
  • Bahman Zahedi 2
  • Abdollah Ehteshamnia 2
1 Former M.Sc. Student, Faculty of Agriculture, Lorestan University, Iran
2 Assistant Professor, Faculty of Agriculture, Lorestan University, Iran
چکیده [English]

In this study, 21 pomegranate genotypes were collected from Lorestan province, and evaluated using morphological and biochemical characteristics. Results of variance analysis showed statistic significant differences between genotypes, except for percent of skin, pH, and soluble solids traits. The amount of variation in total genotypes, showed the highest coefficient of variation was 50.11, 46.06 and 32.22% for vitamin C, weight of fruit and amount of acid, respectively. Principal components analysis showed that four main factors could have denoted 98.91% of the total variation. Distribution of genotypes using Principal components analysis was performed and plot distribution of genotypes showed that A7 (‘Souze shine Shah Taj Kutah’) genotype had the highest fruit weight, the two main components of the first and second highest coefficient was positive. Traits such as single berry weight, the total weight of the skin, weight of 10 seeds, leaf length to width ratio, the percentage of skin in the first component (PC1) and crown length, acidity, leaf and fruit in the second component (PC2), was grouped respectively. Cluster analysis of genotypes was performed by Ward method and 21 genotypes in Euclidian distance 5 were classified into six clusters that genotypes collected from a region were located in different clusters. In this study, important factors in genotype grouping were weight and figure of fruit. These result obtained due to differences between genotypes in each region and no relation betwen genetic distance with geographical distance was found.

کلیدواژه‌ها [English]

  • Cluster Analysis
  • fruit characteristics
  • Genetic diversity
  • pomegranate
  • principal components analysis
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