Taksiran parameter genetik untuk pertumbuhan dan kelurusan batang uji keturunan Araucaria cunninghamii umur 5 tahun

Dedi Setiadi

Abstract


An open-pollinated progeny test of Araucaria cunninghamii was established in Bodowoso, East Java.The seeds were collected from 28 parent trees in 3 provenances in papua. The progeny test was arranged according to randomized Complete Block Design consisting of 28 families, 8 replications, 4 lines tree plot and spacing at 4 m x 3 m. At five years of age differences between provenances or families within provenance was significant for height, diameter and stem straightness. Heritability estimates for height, diameter and stem straightness were all moderate: (h2f – 0.44, h2i =0.11) for  height, h2f – 0,36 h2i =0.12) for straightness). The genetic corrwelations between traits were strong and positive: 0.62 for height and diameter, 0.73 for diameter and straightness (rg=0.73) and height and straightness. The genetic gains from family selection with  selection intensity of 70 % for height, diameter and stem straightness were 7.8 %, 2.5 %, and 9.7 % respectively, While those from individual selection with selection intensity of 10 % for height, diameter and stem straightness were 10.7 %, 4.6 % and 15.3 % respectively.

Keywords


: Araucaria cunninghamii, progeny test; heritability; genetic correlation; genetic gain.

Full Text:

PDF

References


Becker, W.A. 1992. Manual Quantitative Genetics. Fifth edition. Academic Enterprises. Washington.

Cotteril, P/P., dan C.A. Dean, 1990. Successful Tree Breeding With Index Selection, CSIRO, Melbourne.

Dieters, M.J., Nikles, D.G., dan Johnson, M.J., 2002. Genetic Improvement and Conservation: A. case Study of Araucaria cunninghamii, Proceedings International Seminar ‘ Advances in Genetic Improvement of Tropical Tree Species’, Yogtyakarta. Indonesia, October1-3.

Dean, C.A., Nikles, D.G. dan Harding, K.J. 1988. Estimates of Genetic Parameters and Gains Expected from Selection in Hoop Pine in South East Queensland. Silvae genetica 37:243-247.

Eisemann, R.L., Harding, K.J. dan Eccles, D>B. 1990. Genetic parameters and predicted selection response for growth and wood properties in a population of Araucaria cunninghamii. Silvae Genetica 39: 206-216

Fins, L.,S.T. Friedman, dan J.V. Brotschol, 1992. Handbook of Quantitative Forest Genetic. Kluwer Academic Publishers. Netherlands.

FPPK-UNCEN, 1980. Laporan Studi Kelayakan Penetapan Sumber Benih Araucaria sp di Irian Jaya. Bekerjasama dengan Direktorat Reboisasi dan Rehabilitasi.

Hardiyanto, E.B., 2007. Bahan Kuliah Pemuliaan Pohon, Program Pasca sarjana Fakultas Kehutanan, Universitas Gadjah mada, Yogyakarta

Nikles, D.G. 1996. The first 50 years of the evaluation of forest tree improvement in Queensland. In Tree Improvement for Sustainable Tropical Forestry. Proc. QFRI-IUFRO Conf.

Namkong, G., 1981. Introduction Quantitative Genetics in Forestry. Castle House Publication, London.

Wright, J.W., 1976. Introduction to Forest Genetics. Academic ress, New York.

Zobel, B. dan Talbert J., 1984. Applied Tree Improvement. John Wiley & Sons, Inc., 50p




DOI: https://doi.org/10.20886/jpth.2010.4.3.117-124

Refbacks

  • There are currently no refbacks.




Copyright (c) 2019 Jurnal Pemuliaan Tanaman Hutan

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Jurnal Pemuliaan Tanaman Hutan Indexed By:

 

Copyright of Jurnal Pemuliaan Tanaman Hutan (JPTH)

eISSN : 2527-8665   pISSN : 1693-7147