نوع مقاله : مقاله پژوهشی
1 دانشجوی کارشناسی ارشد اصلاح نباتات، گروه زراعت و اصلاح نباتات، دانشکدۀ کشاورزی، دانشگاه بیرجند، بیرجند، ایران
2 استادیار، گروه زراعت و اصلاح نباتات، دانشکدۀ کشاورزی، دانشگاه بیرجند، بیرجند، ایران
عنوان مقاله [English]
In order to the study of the salinity effects on seed germination and effecting parameter of fennel (Foeniculum Vulgare) was conducted a factorial experiment in a completely randomized design with two factors and three replications. Factor A was 10 ecotypes, including; Sardasht, Saghghez, Kerman, Tabriz,Sabzevar, Rome, Khusf, Bojnoord, Mashhad and Shabestar and factor B was five concentrations of sodium chloride, including; one, three, five, seven and nine ds/m2. The measured traits were root length, shoot length, seedling length, wet and dry weight of the root, hypocotyls and seedling, root / shoot length, seed vigor index, germination speed and germination percentage. Analysis of variance showed that the total of ecotypes had significant differences in %1 level in most traits except wet weight of seedling, dry weight of root and germination rate. The mean comparison of ecotypes indicated that the Kerman ecotype with minimal reduction in root and shoot length was the most resistant to salinity. The mean comparison of salinity levels showed that there was a significant difference between different levels of salinity in most traits except the dry weight of root. The study of different levels of salinity in the different traits showed that the most traits decreased with increasing concentration of salt and salt had a negative effect on traits. By considering all traits in all levels of salinity; cluster analysis categorized ecotypes into two clusters. In the first cluster were placed all accessions except, Khusf and Shabestar ecotypes, and in second cluster were placed Khusf and Shabestar ecotypes. The second cluster with a low root length, shoot and seedling, seed vigor, germination percentage and germination speed not good salt tolerance ecotypes.