Ramadiana S, Hapsoro D, Yusnita Y. 2018. Morphological variation among fifteen superior robusta coffee clones inLampung Province, Indonesia. Biodiversitas 19: 1475-1481. This study aimed to characterize morphological variation among fifteensuperior robusta coffee clones in Lampung Province. The fifteen clones consisted of four clones released by the Indonesian Coffee andCocoa Research Institute (ICCRI), i.e. ‘BP 409’,‘BP936’, ‘BP939’, ‘SA 237’, together with eleven superior coffee clones selected byfarmers from Tanggamus District (‘Tugino’, ‘Wanto’, ‘Biyadi’, ‘Komari’, ‘Wardi’, ‘Wariso’) and from West Lampung District (‘TuguKuning’, ‘Tugu Hijau', ‘Tugu Biru', ‘Tugu Sari', ‘Lengkong'). Fifteen qualitative and seven quantitative morphological characters wereevaluated in a randomized complete block design with three replicates for each clone,each replication consisted of two plants. Fromeach plant, four samples were taken from four sides of the plant (north, south, west, and east). It was found that while somemorphological characters exhibited negligible variation among clones, there were significant differences between clones for othercharacters. The characters that did not differ significantly between clones were: shapes of leaf base and leaf tip; petiole color; leafvenation pattern; fruit disk shape; ripe-fruit color; and stipule shape. The characters that varied between clones were shape of leaf lamina(elliptical vs. lanceolate); fruit shape (round vs. oval); and shape of leaf margins. Morphological variation was also observed in somequantitative characters: canopy diameter; tree height; stem diameter; leaf length; leaf width; petiole length; stipule length; and number ofprimary branches.
Dendrobium adalah salah satu anggrek epifit yang banyak diminati oleh masyarakat. Permintaan anggrek Dendrobium semakin meningkat setiap tahunnya, akan tetapi anggrek memiliki tipe pertumbuhan yang lambat sehingga untuk membantu pertumbuhan dan perkembangannya, anggrek membutuhkan zat pengatur tumbuh. Selain itu, anggrek juga membutuhkan vitamin sebagai katalisator dalam proses metabolisme. Penelitian ini bertujuan untuk mengetahui pengaruh peningkatan konsentrasi benziladenin terhadap pertumbuhan bibit anggrek Dendrobium yang berasal dari bibit botolan, pemberian vitamin B terhadappertumbuhan bibit anggrek Dendrobium yang berasal dari bibit botolan, dan ada atau tidaknya interaksi antara peningkatan konsentrasi benziladenin dan vitamin B terhadap pertumbuhan anggrek Dendrobium. Penelitian dilaksanakan di rumah kaca Fakultas Pertanian Universitas Lampung dari bulan Maret sampai September 2013. Penelitian ini menggunakan Rancangan Acak Lengkap (RAL). Perlakuan disusun secara faktorial (3x2). Faktor pertama adalah konsentrasi BA 20; 40; dan 60 mg/l dan faktor kedua adalah vitamin B 0 g/l (tanpa vitamin B) dan vitamin B 1 g/l. Setiap kombinasi perlakuan diulang tiga kali dan masing-masing percobaan terdiri dari 10 bibit anggrek Dendrobium dengan sampel percobaan 5 bibit tanaman. Homogenitas ragam antar perlakuan diuji dengan uji Bartlett. Apabila kedua asumsi terpenuhi dilanjutkan dengan analisis ragam dilanjutkan dengan uji BNT pada taraf 5%. Hasil penelitian menunjukkan bahwa penggunaan BA 20 mg/l menghasilkan pertumbuhan terbaik tanaman jika dibandingkan dengan BA 40 dan 60 mg/l. Penambahan vitamin B 1 g/l tidak menunjukkan pertumbuhanyang lebih baik jika dibandingkan dengan tanpa vitamin B. Interaksi terbaik didapat pada perlakuan BA 20 mg/l dengan tanpa vitamin B, yaitu pada variabel pengamatan penambahan tinggi tanaman, jumlah akar, panjang akar, dan bobot basah.
Abstract. Ramadiana S, Hapsoro D, Evizal R, Setiawan K, Karyanto A, Yusnita. 2021. Genetic diversity among 24 clones of robusta coffee in Lampung based on RAPD markers. Biodiversitas 22: 3122-3129. This study aimed to estimate the genetic diversity among 24 clones of Robusta coffee from Lampung, Indonesia, by use of RAPD markers. The clones consisted of 18 local and 6 BP clones. These BP clones were developed from a breeding program of The Indonesian Coffee and Cocoa Research Institute. Genomic DNAs extracted from these clones were subjected to polymerase chain reaction and the amplified products were run using gel electrophoresis. Eleven random primers produced clear, reproducible, scorable bands. Fifty-four of 86 bands showed polymorphism and were used to construct a dendrogram based on UPGMA Jaccard's Similarity Coefficients. The genetic base of the population was narrow (average genetic similarity 68.4%), ranging from 26-93%. The genetic similarity of the local clones was higher than that of BP clones. The clones were clustered into five groups. Group 1 contained one clone (BP 534), while each of Group II-V contained more than one clone. The average genetic similarity of BP 534 to each clone of Group II-V was 41%. The genetic similarity of clones in Group II, III, IV, and V were 55.5%, 43.0%, 81.1%, and 80.1%, respectively. This research should be very useful for selecting parents in a breeding program to produce better clones of Robusta coffee.
Penelitian ini bertujuan untuk: (1) mengetahui pengaruh jenis tumpangsari pada pertumbuhan dan produksi dua kultivar gladiol, (2) mengetahui respon masing-masing kultivar terhadap jenis tumpangsari, (3) mengetahui jenis kombinasi tumpangsari yang berpengaruh terhadap masing-masing kultivar gladiol. Penelitian ini disusun dengan menggunakan rancangan perlakuan faktorial 2x4, yang ditata dalam rancangan petak terbagi (split–plot design) yang diluluh dalam rancangan acak kelompok (RAK). Taraf faktor sayuran ditempatkan pada petak utama yaitu sayuran selada (S1), sayuran sawi (S2), sayuran campuran (S3), dan tanpa sayuran (S4). Kultivar umbi gladiol yaitu kultivar Holand Putih (VW) dan kultivar Holand Pink (VP) ditempatkan pada petak anak. Hasil penelitian menunjukkan bahwa: (1) Penanaman gladiol dengan sawi dan sayuran campuran (sawi dan selada) mempengaruhi jumlah daun gladiol secara nyata dengan rata-rata 8,54 dan 8,46 daun., (2) Kultivar Holland Pink menghasilkan variabel tinggi tanaman, jumlah daun, jumlah floret, diameter subang dan bobot subang yang lebih besar dibandingkan Holland Putih. Sedangkan untuk jumlah kormel, Holland Putih menghasilkan jumlah yang lebih banyak daripada Holland Pink, (3) Penanaman gladiol menggunakan sayuran sawi dengan kultivar Holland Pink menghasilkan panjang tangkai yang terbaik yaitu 98,38 cm.
Shallots (Allium ascalonicum L.) is one of the leading vegetable commodities used as food seasoning and traditional medicine. This study aims to see the effect of providing various doses of NPK fertilizer and types of biological fertilizers on the growth and production of shallot plants. This study used a randomized block design (RAK) arranged in a factorial (4 x 2). The first factor is the NPK fertilizer dosage which consists of four levels, namely: N0= 0% (without NPK fertilizer), N1= 50% (25 g/m2), N2= 100% (50 g/m2), and N3= 150% (75 g/m2). The second factor is the type of biological fertilizer which consists of two levels, namely: H1= Grikulan plus fertilizer and H2= EM4. The results showed that the NPK fertilizer dosage treatment up to a dose of 75g/m2 gave the best results on plant growth and development, including the number of leaves, plant height, fresh tuber weight per plant, wind dry tuber weight per plant, and wind dry tuber weight per m2. The growth and development of shallot plants with the application of Grikulan biological fertilizers were better than those of EM4 biological fertilizers. Treatment of NPK fertilizer dosage of 150% or equivalent to 75 g / m2 supplemented with the application of Grikulan plus fertilizer results in higher production, namely the weight of dry tubers per m2 reaching 1674.33 g or equivalent to 11.72 tonnes/ha. Keywords : EM4, Grikulan plus, shallots,NPK, yield
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.