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      STUDI PEMBUNGAAN DAN KARAKTERISTIK MINYAK ATSIRI BUNGA MELATI DAN GARDENIA DENGAN PINCHING

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      Date
      2026
      Jenis/Type
      Tesis
      Subtype
      Theses
      Author
      SHOLIHA, NABILA FAIRUZ
      Krisantini
      Kurniawati, Ani
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      Abstract
      Melati (Jasminum sambac) dan Gardenia (Gardenia jasminoides) merupakan tanaman aromatik penghasil minyak atsiri bernilai ekonomi tinggi yang banyak dimanfaatkan dalam industri parfum, kosmetik, dan aromaterapi. Pengembangan kedua tanaman tersebut masih menghadapi kendala dalam penyediaan bunga secara berkelanjutan serta terbatasnya informasi mengenai teknik budidaya yang mampu meningkatkan produksi bunga dan kualitas minyak atsiri. Salah satu teknik budidaya yang berpotensi meningkatkan percabangan dan pembungaan adalah pinching. Oleh karena itu, penelitian ini bertujuan untuk meningkatkan produksi dua kultivar bunga melati yaitu ‘Grand Duke of Tuscany’ dan ‘Emprit Bandar Arum’ serta Gardenia jasminoides ‘J.Ellis’ dengan perlakuan pinching serta mendapatkan profil karakteristik minyak atsirinya. Penelitian ini dilaksanakan pada bulan Januari 2025 hingga Maret 2026 di Cosmax Smart Green Farm, Cikabayan, Bogor, Jawa Barat, sedangkan analisis GCMS dilaksanakan di Labkesda Jakarta. Penelitian melati menggunakan Rancangan Kelompok Lengkap Teracak (RKLT) dua faktor, yaitu kultivar dan perlakuan pinching (tanpa pinching dan dengan pinching), dengan lima ulangan sehingga diperoleh 20 satuan percobaan yang masing-masing terdiri dari 10 tanaman. Penelitian gardenia menggunakan dua kultivar, yaitu Gardenia jasminoides ‘J. Ellis’ dan 'Kleim's Hardy', namun karena kultivar 'Kleim's Hardy' tidak menghasilkan bunga selama penelitian, maka analisis generatif dan minyak atsiri hanya dilakukan pada kultivar ‘J. Ellis’. Pinching efektif memperbaiki arsitektur tanaman dan meningkatkan pembungaan pada melati. Pinching pada melati 'Grand Duke of Tuscany' dan 'Emprit Bandar Arum' menghasilkan tanaman yang lebih pendek, namun meningkatkan jumlah cabang, lebar tajuk, jumlah daun, dan produksi bunga sebesar 27–33% dibandingkan tanpa pinching. Analisis GC-MS menunjukkan adanya senyawa volatil utama pada kedua kultivar melati yang didominasi oleh linalool dan a-farnesene, serta beberapa senyawa minor lainnya. Perlakuan pinching meningkatkan kandungan linalool sebesar 0,37–2,79% dan a farnesene sebesar 0,18–0,55% dibandingkan tanpa pinching. Kultivar pada gardenia berpengaruh nyata pada parameter tinggi tanaman, warna daun (L*, a*), jumlah cabang primer, sekunder, tersier serta lebar tajuk tanaman. Perlakuan pinching pada gardenia berpengaruh nyata terhadap tinggi tanaman, jumlah cabang primer, sekunder, tersier dan lebar tajuk, serta meningkatkan produksi bunga sebesar 31%. Senyawa volatil utama pada gardenia meliputi golongan terpenoid, benzenoid/fenilpropanoid, senyawa turunan asam lemak, dan indole. Perlakuan pinching mengubah kandungan dan kelimpahan senyawa volatil yang ditandai dengan penurunan beberapa terpenoid utama serta munculnya indole dan oktil tiglat. Secara keseluruhan, pinching berpotensi diterapkan sebagai teknik budidaya untuk meningkatkan produksi bunga sekaligus memengaruhi karakteristik aroma pada tanaman melati dan gardenia.
       
      Jasminum sambac (jasmine) and Gardenia jasminoides (gardenia) are aromatic plants producing economically valuable essential oils that are widely used in the perfume, cosmetics, and aromatherapy industries. The development of these plants still faces challenges in ensuring a continuous flower supply and limited information on cultivation techniques capable of improving flower production and essential oil quality. One cultivation technique with the potential to enhance branching and flowering is pinching. Therefore, this study aimed to increase flower production in two jasmine cultivars, ‘Grand Duke of Tuscany’ and ‘Emprit Bandar Arum’, and Gardenia jasminoides ‘J. Ellis’ through pinching, as well as to characterize their essential oil profiles. The study was conducted from January 2025 to March 2026 at Cosmax Smart Green Farm, Cikabayan, Bogor, West Java, Indonesia, while GC-MS analysis was performed at the Jakarta Regional Health Laboratory (Labkesda Jakarta). The jasmine experiment employed a two-factor randomized complete block design (RCBD), with cultivar and pinching treatment (without pinching and with pinching) as the factors, with five replications, resulting in 20 experimental units, each consisting of 10 plants. The gardenia experiment involved two cultivars, Gardenia jasminoides ‘J. Ellis’ and ‘Kleim’s Hardy’. However, as ‘Kleim’s Hardy’ did not produce flowers during the study period, generative and essential oil analyses were conducted only on ‘J. Ellis’. Pinching effectively improved plant architecture and enhanced flowering in jasmine. In both ‘Grand Duke of Tuscany’ and ‘Emprit Bandar Arum’, pinching produced shorter plants but increased the number of branches, canopy width, number of leaves, and flower production by 27–33% compared with plants without pinching. GC-MS analysis identified major volatile compounds in both jasmine cultivars, predominantly linalool and a-farnesene, along with several minor compounds. Pinching increased linalool content by 0.37–2.79% and a-farnesene content by 0.18–0.55% compared with the non pinched plants. In gardenia, cultivar significantly affected plant height, leaf color (L* and a*), and the numbers of primary, secondary, and tertiary branches, as well as canopy width. Pinching significantly affected plant height, the numbers of primary, secondary, and tertiary branches, and canopy width, and increased flower production by 31%. The major volatile compounds detected in gardenia belonged to the terpenoid, benzenoid/phenylpropanoid, fatty acid-derived, and indole groups. Pinching altered the composition and relative abundance of volatile compounds, as indicated by reductions in several major terpenoids and the appearance of indole and octyl tiglate. Overall, pinching has potential as a cultivation technique for increasing flower production while influencing aroma characteristics in jasmine and gardenia.
       
      URI
      http://repository.ipb.ac.id/handle/123456789/178745
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