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All Journal JURNAL PEMULIAAN TANAMAN HUTAN
Noor Khomsah Kartikawati
Balai Besar Penelitian dan Pengembangan Bioteknologi dan Pemuliaan Tanaman Hutan Yogyakarta
Agriculture, Biological Sciences & Forestry

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PENINGKATAN GENETIK AKTUAL DAN INTERAKSI SUMBER BENIH X LOKASI TERHADAP KADAR 1,8 CINEOLE DAN RENDEMEN MINYAK PADA KAYUPUTIH Noor Khomsah Kartikawati; Prastyono Prastyono; Anto Rimbawanto
Jurnal Pemuliaan Tanaman Hutan Vol 10, No 2 (2016): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (557.617 KB) | DOI: 10.20886/jpth.2016.10.2.123-134

Abstract

Realized genetic gain of improved seed of cajuput from a breeding program and seed source x site interaction on the oil properties (1,8-cineole and oil yield) was evaluated through the establishment of genetic gain trials in two sites: Gunungkidul dan Ponorogo. Improved seed from two seed sources tested in the trials were first generation seedling seed orchard (SSO-1) and selected superior seed trees in the SSO-1 (SSO-2). As a control, unimproved seed from three seed sources: natural stands in Maluku (ST-1), plantation in Ponorogo (ST-2) and Gundih (ST-3) were also planted together in the trials. The genetic gain trial was established using a randomised complete clock design which consists of 5 tested seed sources, 20 treeplot, 8 replicates and spacing of 3 x 3m. The results of study showed that the realized genetic gain for the content of 1,8-cineole from SSO-2 over the controls ranged from 13.78% to 17.52% and the genetic gain of the oil yield ranged from 15.76% to 26,43%. Meanwhile the realized genetic gain for SSO-1 ranged from 2.07% to 5.42% and 10.15% to 20.30% for the content of 1,8-cineole and oil yield,respectively. The non-significance of seed source x site interaction indicates that all improved seed from the first-generation seedling seed orchard of cajuput in Paliyan are most likely to be adaptable to the varies site in Gunungkidul and Ponorogo while maintaining the high productivity in oil properties.
SELEKSI DAN PEROLEHAN GENETIK PADA UJI KETURUNAN GENERASI KEDUA KAYUPUTIH (Melaleuca cajuputi subsp. cajuputi) DI GUNUNGKIDUL Sumardi Sumardi; Noor Khomsah Kartikawati; Prastyono Prastyono; Anto Rimbawanto
Jurnal Pemuliaan Tanaman Hutan Vol 12, No 1 (2018): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (211.877 KB) | DOI: 10.20886/jpth.2018.12.1.65-73

Abstract

Breeding for cajuput in Indonesia has moved into advanced generation breeding cycle through establishing second-generation progeny trial. A series of selection would be practiced in the trial before converting into a seedling seed orchard to produce genetically improved seed. In this study, a series of selection, followed by prediction of genetic gain will be observed in the second-generation progeny trial of cajuput established at Gunungkidul. The trial was laid out in randomized complete block design (RCBD), 65 families, three tree-plot, four replications, and spacing of 3 × 1,5 meter. Measurement was conducted on height and diameter at 2 years age. In the trial, within-plot selection has been practiced phenotypicaly by retaining one of the best tree out of the three tree within each plot. Succesive family selection was then simulated from the result of within-plot selection. Results of study showed that estimates of heritabily for diameter were higher than that for height. Genetic and phenotypic correlation between the two traits was moderate at around 0.57. Within-plot selection practiced in the trial resulted positive selection differential for all measured traits. Diameter showed higher coefficient weight of selection (0.4280) than height (0.0406) which indicates that the practiced within-plot selection was more imposed for diameter than that for height. Genetic gain from within-plot selection calculated using selection index were 20.76% for diameter and 12.73% for height. Simulated family selection using the same coefficient weight as within-plot selection resulted lower genetic gain at around 12.26% and 7.52% for diameter and height, respectivelly.
Co-Authors Anto Rimbawanto Prastyono Prastyono Sumardi Sumardi