Pengaruh Sumber Benih dan Famili Terhadap Pertumbuhan Bibit Mahoni Daun Lebar (Swietenia macrophylla King.) Umur Tujuh Bulan

Abstract

Swietenia macrophyllaKing. is an exotic species from Latin America which have been planted in Indonesia since 1870. This species is a good wood source for construction timber which is quite important in Indonesia. This study was conducted to determine the effect of seed source and family on S. macrophylla seedling growth which may be useful for supporting breeding program of this species. The seeds were collected from four seed sources: Banjar -West Java, Samigaluh -Kulonprogro, Bondowoso -East Java and Lombok -West Nusa Tenggara. Every seed source consisting of 10 families, except Bondowoso which had 5 families. The study was arranged in a randomized complete design, five seedlings per plot and repeated 5 times for each family. At 7 months old the seed source had significantly influence on height and stem diameter, while the family significantly influence height, stem diameter and the number of leaf. Banjar seed source had the best height growth (55.8 cm), while Banjar and Lombok seed sources had the best stem diameter, respectively 0.62 cm and 0.61 cm. INTISARIMahoni daun lebar (Swietenia macrophylla King.) merupakan jenis eksotik dari Amerika Latin yang telah ditanam di Indonesia sejak tahun 1870. Jenis ini merupakan pemasok kayu pertukangan yang cukup penting di Indonesia. Tujuan penelitian adalah mengetahui pengaruh sumber benih dan famili terhadap keragaman pertumbuhan bibit S. macrophylla untuk mendukung kegiatan pemuliaan. Rancangan percobaan yang digunakan Rancangan Acak Lengkap yang terdiri dari dua faktor, yaitu sumber benih (Banjar-Jabar, Samigaluh -Kulonprogo, Bondowoso-Jatim dan Lombok-NTB) dan famili (35 famili). Hasil analisis menunjukkan bahwa sumber benih berpengaruh nyata terhadap pertumbuhan tinggi dan diameter batang, sedangkan famili berpengaruh nyata terhadap pertumbuhan tinggi, diameter batang dan jumlah daun pada umur 7 bulan. Pertumbuhan bibit dengan tinggi terbaik (55,8 cm) berasal dari sumber benih Banjar dan pertumbuhan bibit dengan diameter batang terbaik berasal dari sumber benih Banjar dan Lombok masing-masing sebesar 0,62 cm dan 0,61 cm. HASIL PENELITIANRiwayat Naskah :Naskah masuk (

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“…Asal populasi dan pohon induk seringkali dinyatakan sebagai faktor yang berpengaruh signifikan terhadap tinggi dan diameter tanaman (Mashudi, Susanto, & Baskorowati, 2019;Mashudi, Pudjiono, Rayan, & Sulaeman, 2012;Setiadi & Susanto, 2012). Dalam penelitian ini hanya populasi yang berpengaruh signifikan terhadap tinggi dan diameter tanaman faloak.…”

Risk Analysis of Sengon (Falcataria moluccana Miq.) Seedling Production Using Fault Tree Method

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