Penelitian bertujuan untuk mengetahui tingkat keragaman cabe jawa berdasarkan karakteristik morfologi serta mengetahui hubungan kekerabatan kultivar cabe jawa antar daerah sentra penanaman di Kabupaten Sampang. Observasi dilaksanakan pada bulan september- Desember 2016, di sentra budidaya tanaman cabe jamu di Kabupaten Sampang. Pelaksanaan penelitian dilakukan dengan pengamatan langsung pada tanaman cabe jawa dan proses wawancara. Pengamatan secara langsung pada tanaman dengan mengidentifikasi karakter morfologi (35 karakter morfologi) yang meliputi karakter akar, batang, cabang, daun, bulir, buah, dan biji, untuk selanjutnya disajikan dalam bentuk dendogram. Hasil pengamatan menunjukkan terdapat keragaman pada warna batang, panjang cabang lateral, jumlah nodus percabang lateral, produksi akar adventif, panjang tangkai daun, panjang tangkai bulir. Panjang bulir, ukuran buah. Analissi berdasrkan matriks kemiripan disajikan dalam bentuk dendogram pada koefisien kemiripan 0,94 terdapat 2 kelompok. Kelompok 1 terdiri dari 23 kultifar dan kelompok 2 terdiri dari 5 kultifar. Kata kunci : Cabe jawa, Sampang, karakter morfologi, hubungan kekerabatan

The aims of this study to determine the level diversity Java chili based on the morphology characteristics and to know the relationship of cultivar Java chili between the central areas cultivation in Sampang regency. The observation is conducted in September-December 2016, in the center of herbs cultivation in Sampang Regency. The research implementation is conducted by directly observation on Java chili and process of interviews. The observation directly into plants with identify of morphology characters (35 characters morphology) that includes of the roots character, trunk, branches, leaves, grains, fruits, and seeds, furthermore to be presented into dendogram form. The results of observation found the variations of trunk color, the lateral length of branches, the lateral number of branches nodes, the production root adventitious, the long stem of leaves, the long stem of long grains. The length of grains, the size fruit. The analyses based on matrix similarly is presented into dendogram form of coefficient the similarity 0,94 contains of 2 group. Group 1 consists of 23 cultivars and group 2 consists of 5 cultivars. Keywords: the long peper, Sampang regency, the morphology characteristics, relationship

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