گروه بندی برخی ژنوتیپ های برتر زردآلوی بومی ایران بر اساس خواص فیزیکی و هندسی

نویسندگان
فوژان بدیعی 1
ناصر بوذری 2
فروغ شواخی 1
زهرا رفیعی درسنگی 1
1 مؤسسه تحقیقات فنی و مهندسی کشاورزی، سازمان تحقیقات، آموزش و ترویج کشاورزی
2 موسسه تحقیقات علوم باغبانی، پژوهشکده میوه های معتدله و سردسیری، سازمان تحقیقات، آموزش و ترویج کشاورزی
10.22034/FSCT.20.137.74
چکیده
در این پژوهش 11ژنوتیپ برتر زردآلو از نظر برخی خواص فیزیکی و هندسی شامل سرعت تنفس، ابعاد میوه، محیط، سطح، مساحت، شعاع متوسط هندسی، حجم، سطوح تصویر، ضریب شکل، گردی، ضریب فشردگی، نسبت طول به عرض(L/W)، نسبت طول به ضخامت(L/T) و نسبت طول به وزن (L/M) بررسی شدند. این ویژگی­ ها در مقدار رطوبت معین در زمان برداشت از 19/75 تا 67/87 درصد اندازه­ گیری شدند. در ادامه همبستگی بین صفات بررسی شد و ژنوتیپ ­ها براساس داده­ های به ­دست آمده با استفاده از تجزیه و تحلیل مؤلفه ­های اصلی (PCA) گروه­ بندی شدند. نتایج نشان داد ژنوتیپ­ های زردآلو از نظر ویژگی­ های فیزیکی و هندسی اختلاف معنی­ داری با یکدیگر (P<0.01) داشتند. مطالعه همبستگی بین صفات نشان داد که در میوه ­هایی که طول بزرگتری داشتند، وزن میوه و رطوبت به­ طور معنی­ داری افزایش می­ یابد. ضریب شکل و فشردگی نیز همبستگی مستقیم و معنی­ داری با یکدیگر و رابطه عکس و معنی­ داری با گردی میوه داشتند. این تحقیق نشان داد که امکان گروه ­بندی ژنوتیپ­ های زردآلوی بومی ایران بر اساس ویژگی­ های فیزیکی و هندسی میوه وجود دارد. بر اساس تجزیه و تحلیل مؤلفه‌های اصلی ژنوتیپ­ های زردآلو به پنج گروه متمایز تقسیم شدند و دو مؤلفه‌ اول بیشترین واریانس (۹۱ درصد) را در داده­ های مورد بررسی توصیف کردند. نتایج این پژوهش می ­تواند در طراحی تجهیزات و ادوات برداشت، جابه­ جایی، جداسازی، بسته ­بندی و فرآوری میوه نقش مهمی داشته باشد.
کلیدواژه‌ها
تجزیه و تحلیل مؤلفه های اصلی (PCA)
خواص فیزیکی
سرعت تنفس
زردآلو
خواص هندسی

موضوعات

عنوان مقاله English

Classification of some superior local apricot genotypes of Iran based on physical and geometrical attributes

نویسندگان English

Fojan Badii 1
Naser Bouzari 2
Forough Shavakhi 1
Zahra Rafiee Darsangi 1
1 Agricultural Engineering Research Institute (AERI), Agricultural Research, Education and Extension Organization (AREEO)
2 Horticultural Science Research Institute, Temperate Fruits Research Center, AgriculturalResearch, Education and Extension Organization (AREEO)
چکیده English

In this study some physical and geometrical properties of 11 superior apricot genotypes were determined. These properties such as respiration rate, fruit dimensions, perimeter, surface area, volume, compact factor, geometric mean diameter, projected area, shape factor, circularity, length to width ratio, length to thickness ratio, and length to mass ratio were measured at harvesting moisture content ranging from 75.19 to 87.67 %. Then the correlation among average values of the attributes was performed and the genotypes were classified using principal component analysis (PCA). The results showed that all the genotypes had significant differences in terms of all the studied attributes (P<0.01). There was a significant and positive correlation between fruit length and weight and fruit length and moisture content. Fruit shape factor and compression factor showed a positive and significant correlation, while these attributes had negative and significant correlations with circularity. This study showed that Iranian apricot genotypes could be discriminated by differences in their geometrical characteristics using principal component analysis. Based on the PCA results, the first two components account for the most of the variation in the data (91%) and five distinct groups were observed. Overall, the results of this study can be beneficial for the design of equipment for harvesting, transportation, separating, packaging, and processing of apricot fruit.

کلیدواژه‌ها English

apricot
Geometrical attributes
Physical attributes
Principal component analysis (PCA)
Respiration Rate
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