Garuda - Garba Rujukan Digital

Sumardi Sumardi

Center of Forest Biotechnology and Tree Improvement

Author-ID : 2615950

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Environmental Science Immunology & microbiology

Published : 3 Documents Claim Missing Document

Claim Missing Document

Articles

1

GENETIC PARAMETER ESTIMATES FOR GROWTH TRAITS IN AN Eucalyptus Urophylla S.T. Blake PROGENY TEST IN TIMOR ISLAND Sumardi Sumardi; Hery Kurniawan; Prastyono Prastyono
Indonesian Journal of Forestry Research Vol 3, No 2 (2016): Indonesian Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Genetic parameters were estimated for growth traits of Ampupu (Eucalyptus urophylla S.T. Blake) progeny test grown in Southern Central Timor - East Nusa Tenggara Province, Timor Island. When the trial was one year old data were collected from 45 half-sib open pollinated families and assessed. There were genetic variations in height and diameter among families of E. urophylla. Growth traits had moderate heritability, both individually and in family, i.e. 0.28 and 0.55 for height and 0.41 and 0.66 for diameter, respectively. Genetic correlation between height and diameter was strong (0.96). However, the estimation of genetic parameter should be interpreted carefully since the trial was very young. Re-assessment of the trial should be carried out periodically to provide better understanding of the species regarding the dynamic of the genetic interaction between the species and its environment, effective age of selection and prediction of genetic gain.

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)

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.

KONSERVASI GENETIK CENDANA BERBASIS PARTISIPASI MASYARAKAT DI DESA NUSA KABUPATEN TIMOR TENGAH SELATAN (Genetic Conservation Of Sandalwood Based On Community Participation In East Nusa Tenggara) sumardi sumardi
Journal Penelitian Kehutanan FALOAK Vol 1, No 2 (2017): Jurnal Penelitian Kehutanan FALOAK
Publisher : Balai Penelitian Dan Pengembangan Teknologi Hasil Hutan Bukan Kayu

Sandalwood (Santalum album Linn.) is a species that has advantages and contribution to the development of East Nusa Tenggara province. It is a commodity that has contributed the highest foreign exchange for the regional income of East Nusa Tenggara Province in 1986/1987 up to 1990/1991. However, the sustainability of sandalwood is now threatened due to mismanagement and low success of regeneration. To avoid the occurrence of genetic degradation or even the extinction of this species is important to do genetic conservation. The community participation model for the genetic conservation of sandalwood has been piloted in the Timor Tengah Utara District of East Nusa Tenggara Province. This study aimed to analyze the success and growth of sandalwood in the model of community participation for genetic conservation strategy of sandalwood in East Nusa Tenggara. The analysis has shown that the survival rate of sandalwood in the genetic conservation with community participation model at 1 year old are 100% if planted on the yard; 90.74% if planted on the bare land; and 64.58% if planted on the land with a very close shade. Trials in 5 farmer groups showed that no significant difference between farmer groups on successful planting in the field, as indicated by similar plant life percentages. Meanwhile, The variance analysis on the growth characteristic showed that mean of high and diameter were not significantly different between treatment model of planting. The mean of height and diameter of each shading treatment were 30.13 cm and 2.97 mm if planted on the yard area; 31.49 cm and 3.25 mm if planted on the bare land; and 29.63 cm and 3.05 mm if planted on the land with a very close shade.

Title

Found 3 Documents
Search

Abstract

Abstract

Abstract

Title Search

Found 3 Documents Search

Abstract

Abstract

Abstract

Title

Found 3 Documents
Search