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All Journal JOURNAL OF COASTAL DEVELOPMENT Buletin Palawija Buletin Palawija
Suharsono .
Indonesian Legume and Tuber Crops Research Institute (ILETRI) Jln. Raya Kendalpayak KM 08, PO.BOX. 66 Malang, 65101
Agriculture, Biological Sciences & Forestry Education

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TRIKOMA SEBAGAI FAKTOR KETAHANAN KEDELAI TERHADAP HAMA PENGGEREK POLONG Kurnia Paramita Sari; Suharsono .
Buletin Palawija No 20 (2010): Buletin Palawija No 20, 2010
Publisher : Balai Penelitian Tanaman Aneka Kacang dan Umbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/bul palawija.v0n20.2010.p%p

Abstract

Kerusakan akibat serangan penggerek polong, Etiella zinckenella Treitschke (Lepidoptera: Pyralidae), dapat menurunkan hasil kedelai sebesar 80%. Varietas tahan terhadap E. zinckenella merupakan salah satu upaya untuk menekan kehilangan hasil akibat serangan hama. Keberadaan trikoma pada polong kedelai ikut berperan sebagai faktor ketahanan kedelai terhadap hama penggerek polong. Galur IAC-100 dan IAC-80-586-2 termasuk tahan terhadap penggerek polong karena mempunyai kerapatan trikoma lebih rapat daripada varietas Wilis dengan kisaran kerapatan 10–27/mm2 untuk IAC-100 dan 12,5–30 mm2 untuk IAC-80-586-2 sedangkan varietas Wilis 3,0–20 mm2. Kerapatan trikoma mempengaruhi jumlah peletakan telur E. zinckenella dan intensitas serangan. Intensitas serangan pada galur IAC-100 43,7% pada polong dan 28,3% pada biji dan IAC-80-586-2 55,6% pada polong dan 35,7% pada biji lebih rendah dibandingkan intensitas serangan pada varietas Wilis sebesar masing-masing 78,3% pada polong dan 38,4% pada biji. Disimpulkan bahwa trikoma ikut berperan sebagai faktor ketahanan kedelai terhadap penggerek polong.
THE GROWTH INHIBITION OF MARINE BIOFILM-FORMING BACTERIA BY THE CRUDE EXTRACT OF SOFT CORAL Sinularia sp. Ocky Karna Radjasa; A. Sabdono; Suharsono .
JOURNAL OF COASTAL DEVELOPMENT Vol 2, No 2 (1999): Volume 2, Number 2, Year 1999
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Marine biofouling has been recognized as a big problem faced by marine technology, and has caused huge economic losses to marine industries. Until recently, marine biofouling has been controlled by the use of metal-based coating which has become another problem because of their negative impacts on marine environments. Soft corals have been known to produce secondary metabolites, some of which may inhibit the fouling processes. The objective of this research was to examine the antimicrobial properties of soft coral Sinularia sp against marine biofilm-forming bacteria The results showed that the soft coral tissues of Sinularia sp. had the antibacterial potency. The crude extracts of Sinularia sp affected significantly on the growth of bacteria tested. The optimal concentration of crude extracts needed to inhibit the growth of bacteria was 150 µg/ml. There were no significantly different among bacteria isolated from fiber, wood and iron steel on diameter of inhibitory zone of the bacterial growth. It is concluded thet the search of bioactive substances produced by soft corals is great possibility to find alternatives for metal-based coatings. Yet, a series of researchs must be undertaken in order to find the secondary metabolites which may be used as antifoulant.
ASSESSING ECOLOGICAL RESILIENCE OF INDONESIAN CORAL REEFS Imam Bachtiar; Ario Damar; Suharsono .; Neviaty P. Zamani
JOURNAL OF COASTAL DEVELOPMENT Vol 14, No 3 (2011): Volume 14, Number 3, Year 2011
Publisher : JOURNAL OF COASTAL DEVELOPMENT

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Abstract

Ecological resilience is an important property of natural ecosystem to be understood in coral reef management. Resilience of Indonesian coral reefs was assessed using 2009 COREMAP data. The assessment used 698 data of line intercept transects collected from 15 districts and 4 marine physiographies. Resilience index used in the assessment was developed by the authors but will be published elsewhere. The results showed that coral reefs at western region had higher average resilience indices than eastern region, and Sunda Shelf reefs had higher resilience indices than coral reefs at Indian Ocean, Sulawesi-Flores, or Sahul Shelf. Four districts were found to have coral reefs with highest resilience indices, i.e. Bintan and Natuna (western region), and Wakatobi and Buton (eastern region). Raja Ampat had coral reefs with lower average resilience indices than that of Wakatobi. Uses of resilience index in coral reef management should be coupled with other information such as maximum depth of coral communities.  
TRIKOMA SEBAGAI FAKTOR KETAHANAN KEDELAI TERHADAP HAMA PENGGEREK POLONG Kurnia Paramita Sari; Suharsono .
Buletin Palawija No 20 (2010): Buletin Palawija No 20, 2010
Publisher : Balai Penelitian Tanaman Aneka Kacang dan Umbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (121.976 KB) | DOI: 10.21082/bul palawija.v0n20.2010.p%p

Abstract

Kerusakan akibat serangan penggerek polong, Etiella zinckenella Treitschke (Lepidoptera: Pyralidae), dapat menurunkan hasil kedelai sebesar 80%. Varietas tahan terhadap E. zinckenella merupakan salah satu upaya untuk menekan kehilangan hasil akibat serangan hama. Keberadaan trikoma pada polong kedelai ikut berperan sebagai faktor ketahanan kedelai terhadap hama penggerek polong. Galur IAC-100 dan IAC-80-586-2 termasuk tahan terhadap penggerek polong karena mempunyai kerapatan trikoma lebih rapat daripada varietas Wilis dengan kisaran kerapatan 10–27/mm2 untuk IAC-100 dan 12,5–30 mm2 untuk IAC-80-586-2 sedangkan varietas Wilis 3,0–20 mm2. Kerapatan trikoma mempengaruhi jumlah peletakan telur E. zinckenella dan intensitas serangan. Intensitas serangan pada galur IAC-100 43,7% pada polong dan 28,3% pada biji dan IAC-80-586-2 55,6% pada polong dan 35,7% pada biji lebih rendah dibandingkan intensitas serangan pada varietas Wilis sebesar masing-masing 78,3% pada polong dan 38,4% pada biji. Disimpulkan bahwa trikoma ikut berperan sebagai faktor ketahanan kedelai terhadap penggerek polong.
Co-Authors A. Sabdono Damar, Ario Imam Bachtiar Kurnia Paramita Sari Neviaty P Zamani Ocky Karna Radjasa Syarifin Firdaus Utut Widyastuti Suharsono1 Suharsono