Keragaman Karakter Morfologis dan Hubungan Kekerabatan Asam Gelugur (Garcinia atroviridis Griff. ex T. Anders) di Kabupaten Asahan dan Kabupaten Batubara di Sumatera Utara: Diversity of Morphological Character and Relationship of Gelugur Acid (Garcinia atroviridis Griff. Ex T. Anders) in Asahan Regency and Batubara Regency in North Sumatra

This research aims to identify morphological character and relation plant of acid gelugur (Garcinia atroviridis Griff. Ex T. Anders) that exist in Regency of Asahan and Regency of Batubara in North Sumatera. This research was conducted in Asahan and Batubara regency in February-April 2017 with survey method using IPGRI gelmatic descriptors guide. Sampling technique is accidental sampling. The results showed that in three regencies of Sumatera Utara there were 20 accessions of gelugur acid that identified Asahan Regency there were 9 accessions and there were 11 accessions of Batubara Regency. Result of morphological characterization for crown shape (pyramid, round, longitudinal and pattern-shaped), stem surface (slippery, coarse, very coarse), leaf (jorong, elongated, lanceolate), flower (female flowers and hermaphrodite flowers) , Evenly, longitude, longitude). The lowest dissimilarity value or the closest kinship relationship in Asahan and Batubara regency is 1,390 with 4 differences from 19 qualitative characters and the highest dissimilarity value or the furthest kinship relationship in Asahan and Batubara regency is 63,636 with 7 differences from 19 qualitative characters.   Penelitian ini bertujuan untuk mengidentifikasi karakter morfologis dan hubungan kekerabatan tanaman asam gelugur (Garcinia atroviridis Griff. Ex T. Anders) yang ada di di Kabupaten Asahan dan Kabupaten Batubara di Sumatera Utara. Penelitian ini dilakukan di Kabupaten Asahan dan Kabupaten Batubara pada bulan Februari-April 2017 dengan metode survei menggunakan panduan deskriptor asam gelugur IPGRI. Teknik pengambilan sampel secara accidental sampling. Hasil penelitian menunjukkan bahwa di tiga Kabupaten Sumatera Utara terdapat 20 aksesi asam gelugur yang diidentifikasi Kabupaten Asahan terdapat 9 aksesi dan Kabupaten Batubara terdapat 11 aksesi. Hasil karakterisasi morfologis untuk bentuk tajuk (piramida, bulat panjang, membujur dan berbentuk pola), permukaan batang (licin, kasar, sangat kasar), daun (jorong, memanjang, lanset), bunga (bunga betina dan bunga hermaprodit), buah (bulat, merata, bujur telur, bujur Hubungan kekerabatan terjauh di Kabupaten Asahan dan Kabupaten Batubara dengan nilai dissimilarity sebesar 63.636 dimana terdapat 7 perbedaan dari 19 karakter kualitatif sedangakan hubungan kekerabatan terdekat di Kabupaten Asahan dan Kabupaten Batubara memiliki nilai dissimilarity sebesar 0,622 dengan 4 perbedaan dari 19 karakter kualitati