نوع مقاله : مقاله پژوهشی
نویسندگان
1
گروه مهندسی تولید و ژنتیک گیاهی دانشکده کشاورزی دانشگاه مراغه. مراغه. ایران
2
ئ
3
گروه باغبانی، دانشکده کشاورزی، دانشگاه آتاتورک، ارزروم، ترکیه
10.22108/ijpb.2026.149034.1452
چکیده
As a perennial forage grass, tall fescue (Festuca arundinacea Schreb.), is cultivated in temperate regions due to its high adaptability, drought tolerance, and forage production potential. Current research assessed twenty-five tall fescue genotypes for morphological, phenological, and the yield-related traits under field conditions in Tabriz, Iran. Traits assessed included plant height (PH), canopy width (CW), crown diameter (CD), fresh forage weight (FF), dry forage weight (DF), stem number (SN), seed weight (SW), days to heading (DH), and days to pollination (DP). Data were analyzed using a genotype by trait biplot model. The first two principal components explained 80% of the total variation, indicating contribution of both additive and non-additive interactions. Biplot analysis indicated genotype 25 as superior for morphological and yield-related traits, while genotype 5 excelled in phonological traits. Trait discriminative power analysis identified CD and FF as the most effective traits for differentiating genotypes, followed by PH, CW, and DF, whereas DH and DP had the lowest discriminative ability. Ideotype-based analysis highlighted genotypes 24, 5, 7, 22, 6, 23, and 25 as closest to the ideal genotype, integrating high performance across of all measured multiple traits. Evaluation of DF indicated genotypes 25, 22, 23, 24, and 7 as highest-yielding. While genotypes 7, 22, 23, 24, and 25 as were identified top performers for seed weight. Morphological traits like PH, CW, CD, FF, DF, and SN were important contributors to forage and seed yield and can be utilized as early selection criteria in breeding efforts.
کلیدواژهها
موضوعات
عنوان مقاله [English]
Morphological variation, trait associations, and genotype assessment in tall fescue (Festuca arundinacea Schreb.) using biplot analysis
نویسندگان [English]
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Ehsan Rahimi
1
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Alireza Pourmohammad
1
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Naser Sabbaghnia
1
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Reza Mohammadi
2
-
Sezai Ercişli
3
1
Department of Plant Production and Genetics, Faculty of Agriculture, University of Maragheh, Maragheh, Iran
2
Branch for Northwest and West region, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research, Education and Extension Organization (AREEO), Tabriz, Iran
3
3Department of Horticulture, Faculty of Agriculture, Ataturk University, 25240 Erzurum, Turkey
چکیده [English]
As a perennial forage grass, tall fescue (Festuca arundinacea Schreb.), is cultivated in temperate regions due to its high adaptability, drought tolerance, and forage production potential. Current research assessed twenty-five tall fescue genotypes for morphological, phenological, and the yield-related traits under field conditions in Tabriz, Iran. Traits assessed included plant height (PH), canopy width (CW), crown diameter (CD), fresh forage weight (FF), dry forage weight (DF), stem number (SN), seed weight (SW), days to heading (DH), and days to pollination (DP). Data were analyzed using a genotype by trait biplot model. The first two principal components explained 80% of the total variation, indicating contribution of both additive and non-additive interactions. Biplot analysis indicated genotype 25 as superior for morphological and yield-related traits, while genotype 5 excelled in phonological traits. Trait discriminative power analysis identified CD and FF as the most effective traits for differentiating genotypes, followed by PH, CW, and DF, whereas DH and DP had the lowest discriminative ability. Ideotype-based analysis highlighted genotypes 24, 5, 7, 22, 6, 23, and 25 as closest to the ideal genotype, integrating high performance across of all measured multiple traits. Evaluation of DF indicated genotypes 25, 22, 23, 24, and 7 as highest-yielding. While genotypes 7, 22, 23, 24, and 25 as were identified top performers for seed weight. Morphological traits like PH, CW, CD, FF, DF, and SN were important contributors to forage and seed yield and can be utilized as early selection criteria in breeding efforts.
کلیدواژهها [English]
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Forage yield
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Genotype by trait interaction
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Seed weight
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Ideotype selection
)