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INDONESIA
Jurnal Penelitian Pertanian Tanaman Pangan
Published by Pusat Penelitian dan Pengembangan Tanaman Pangan
ISSN : 25415166     EISSN : 25415174     DOI : 10.21082
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Jurnal Penelitian Pertanian Tanaman Pangan merupakan publikasi yang memuat makalah ilmiah primer hasil penelitian tanaman pangan (padi dan palawija). Redaksi menerima makalah dari peneliti Puslitbang Tanaman Pangan, Balai Pengkajian Teknologi Pertanian (BPTP), maupun perguruan tinggi. Makalah yang dikirimkan hendaknya sudah mendapat persetujuan dari pimpinan instansi masing-masing. Ketentuan penulisan makalah untuk dapat dimuat di jurnal ini tertera dalam "Author Guidelines/Petunjuk bagi Penulis" di halaman terakhir Jurnal Penelitian Pertanian.
Arjuna Subject : -
Articles 2 Documents
 1 
Search results for , issue " Vol 34, No 3 (2015): Desember 2015" : 2 Documents clear
Perkembangan Pradewasa dan Kemampuan Hidup Predator Verania lineata Thurnberg (Coleoptera: Coccinellidae) pada Tanaman Padi Varietas Rojolele Transgenik Usyati, N.; Buchori, Damayanti; Manuwoto, Syafrida; Hidayat, Purnama; Loedin, Inez H. Slamet
Jurnal Penelitian Pertanian Tanaman Pangan Vol 34, No 3 (2015): Desember 2015
Publisher : Pusat Penelitian dan Pengembangan Tanaman Pangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (122.847 KB) | DOI: 10.21082/jpptp.v34n3.2015.p187-194

Abstract

The use of transgenic varieties on the agricultural production system may provide some agronomical benefits. However, uses of transgenic variety have raised some debates about their potential negative impact on the environment, such as on the decreasing of natural enemies. To study the impact of transgenic variety to the natural enemies, study was conducted on larvae development, and the survival of predatoral insect (V. lineata) on the transgenic Rojolele rice variety. Test was conducted at the laboratory of Molecular Biology, Research Centre for Biotechnology of Indonesian Institute of Science, from January to October 2009. Completely randomized design with 8 treatments and 30 replications were employed. The treatments were transgenic Rojolele rice as follow: 4.2.3-28-15-2-7 and 4.2.4-21-8-16-4 lines contained fusion of two cry genes (cryIB-cryIAa). The 3R9-8-28-26-2 and 3R7-8-15-2-7 lines contained mpi::cryIB gene, the T9-6.11-420 line contained cryIAb gene obtained by particle bombardment, DTcry (azygous) is a segregate and does not contain cry gene (null), DTcry-13 line contained cryIAb gene by Agrobacterium, and non transgenic rice (Rojolele variety). Results showed that there were differences of larvae development and survival of insect predator V. lineata fed on the among transgenic rice lines. On transgenic line T9-6.11-420 and on DTcry-13 line the life time, developmental stages, the number eclosion of adult female, adult insect weight, and survival of the preimaginal and the adult of insect predator were consistently low. On the transgenic line 4.2.3-28-15-2-7; 3R9-8-28-26-2; and 3R7-8-15-2-7 each had no consistent effect on the larvae development and the survival of insect predator. DTcry (azygous) line had no effect on the larvae development and the survival of insect predator. Whereas transgenic line 4.2.4-21-8-16-4 had an effect on the adult weight of insect predator.
Pertumbuhan dan Hasil Biji Genotipe Kedelai di Berbagai Intensitas Naungan Sundari, Titik; Anggoro Susanto, Gatut Wahyu
Jurnal Penelitian Pertanian Tanaman Pangan Vol 34, No 3 (2015): Desember 2015
Publisher : Pusat Penelitian dan Pengembangan Tanaman Pangan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (279.486 KB) | DOI: 10.21082/jpptp.v34n3.2015.p203-217

Abstract

Intensity and quality of sunlight received by plants during the reproductive period greatly influence the soybean yield and yield components. Growth and seed yield of soybean genotypes at different shade intensities were assessed through research conducted at the Research Station of Kendalpayak, Malang, in the year 2011. Three soybean varieties, namely: Pangrango, Argomulyo, and Grobogan, and twelve soybean promising lines tolerant to shade were tested on four artificial shade intensities, ie without shade (N0), shade of 25% (N1), 50% (N2), and 75% (N3). Placement of treatments in each level of shade was arranged in a randomized block design, replicated three times. Results showed that: shade treatment changed the microclimate under the shading. Shade treatment of 25%, 50%, and 75% caused different stress intensities. Shade intensity of 75% caused an increase in plant height and specific leaf area, a reduction in the number of leaves and leaf area, photosynthetically active radiation (PAR) absorption rate, photosynthetic rate, leaf chlorophyll index, number of filled pods, and seed weight per plant. Number of filled pods was considered effective to be used as a basis for selecting soybean genotypes having high yield in shaded conditions. Plant height and seed weight could be used as an indicator for soybean shade tolerance. Genotype AI26-1114-8-28 and IIj9-299-1-4 were considered as shade-tolerant up to 75% shade based on the stress index tolerance value (ITC).

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