Identifikasi Karakter Morfologi Buah Naga (Hylocereus sp.) Di Kecamatan Sitinjo Kabupaten Dairi Sumatera Utara : Identification of Morphological Characteristic of Dragon Fruit (Hylocereus sp.) in Sitinjo District of Dairi Regency North Sumatera

This reserach aimed to identify the morphological chracteristics and phylogenetic relationship of Dragon Fruit (Hylocereus sp.) plants. The research was started from April 2017 until May 2017 at Sitinjo district of Dairi Regency North Sumatera with survey methode using dragon fruit descriptor of Hylocereus by International Union For The Protection Of New Varieties (UPOV). Sampling technique using purposive sampling. Exploration results was obtained 24 genotypes of Dragon Fruit plants based on identified fruit morphological characteristic. Based on clustering analyze the closest genetic relationship is on genotype G17 and G23 which has 2 differences of 7 characteristic with dissimilarity coeficient is 1,000 and the furthest genetic relationship is on genotype G18 and G26 with dissimilarity coeficien is 4,796 which has 5 differences of 7 characteristic.   Penelitian ini bertujuan untuk mengetahui karakteristik dan hubungan kekerabatan genotipe tanaman Buah Naga (Hylocereus sp.). Penelitian ini dimulai dari April 2017 dan selesai pada Mei 2017 di Kecamatan Sitinjo Kabupaten Dairi Sumatera Utara dengan metode survei deskriptif menggunakan panduan Descriptor for Hylocereus sp dari International Union For The Protection Of New Varieties of Plant (UPOV). Tekhnik pengambilan sampel secara purposive sampling. Hubungan kekerabatan terdekat terdapat pada G23 dan G17 yang memiliki 2 perbedaan karakter dari 7 karakter buah yang diamati dengan nilai 1,000 dan kekerabatan terjauh pada G18 dan G26 dengan nilai koefiisen dissimilaritas adalah 4,796.yang memiliki 5 perbedaan karakter dari 7 karakter buah yang diamati