Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)
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PEMILIHAN BAHAN PEMULIAAN PADI UNTUK PEMBENTUKAN VARIETAS UNGGUL DISKRIMINATIF TUMPANGSARI: PADI + JAGUNG + UBIKAYU DI LAHAN KERING. I. HASIL TANAMAN PADI
Full text linkIntercropping of Maize, Rice and Cassava is commonly practiced by subsistent farmers on upland agriculture in Indonesia. In general, grain yield of rice under intercropping is very much lower than under monoculture crop. This due to the fact that the variety of rice planted under intercrop was breed and selected under elite, monoculture crop condition. Field experiment to screen rice breeding materials planted in association with maize and cassava were carried out in Pekalongan (Lampung), October 1993 - November 1994. Three out of 29 entries of rice were selected, EO2 (B6136-Tb-0-1-5), E20 (Tb47h-Mr-17) and E22 (Tb154c-Tb-1). Performance test on grain yield relative stability for selected materials have to be done, before practicing any form of improvement by means of selection
PENGARUH POLUTAN Pb TERHADAP PERTUMBUHAN DAN PERKEMBANGAN TANAMAN Lantana sellowiana dan Ixora chinensis
Full text linkAn experiment on the effect of Pb pollutants on the growth and development of two widely used ornamental plants, i.e. Lantana sellowiana and Ixora chinensis, was conducted at the IPB Greenhouse, Baranangsiang, Bogor from mid September 1990 to the end of December 1990. The experiment aimed to determine the effect of concentration levels of Pb in the form of PbCl2 upon the growth and development of the two ornamental plants. The experiment consisted of two units, each of which was based on the complete randomized design. Treatments consisted of four concentration levels of PbCI2, i.e. 0, 250, 2500, and 25 000 ppm, applied to each unit with three replications. Observation during 12 weeks showed that treatments with 250 and 2500 ppm PbCl2 did not give significant damage to the growth and development of Lantana sellowiana. Concentration level of 25 000 ppm, however, interfered growth and development of this species six weeks after planting. On the other hand, the concentration levels used in this experiment had no toxic effect on the growth and development of Ixora chinensis
UJl HASIL KEPRASAN BEBERAPA VARlETAS TEBU LAHAN KERING PADA DAERAH BERIKLIM BASAH
Full text linkThe study of first rationed sugar cane on wet climate region was carried out at Sindangbarang Bogor (belong to type A according Schmidt and Fergusson classification) from October 1993 to April 1994. The study was designed to fined out the yield and total-sugar content. Several cultivar of Ps 87 (produced by P3GI) were tested (Ps 87-985, Ps 87-21718, Ps 87-22189, Ps 87-22704, Ps 87-21781, Ps 87-22098, Ps 87-21781, Ps 87-21067), and Ps 58 as a control. The result showed that the Ps 87-22074 produced the highest yield (19.524,7 g/m "juring") and total-sugar content (13,16%) among the other
Sorghum Breeding for Improved Drought Tolerance Using Induced Mutation with Gamma Irradiation
Full text link<!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin-top:0cm; margin-right:0cm; margin-bottom:10.0pt; margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman"; mso-ansi-language:IN; mso-no-proof:yes;} @page Section1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> Sorghum has a great potential to be grown and cultivated in Indonesia due to its wide adaptability and high productivity. Since sorghum is not a native species of Indonesia, the genetic variability of this crop in Indonesia is low, thus, plant breeding program is required to support national sorghum development. The objectives of this study were to develop superior genotypes to improve sorghum production and quality for food, animal feed and bioethanol industry. Sorghum production is aimed at optimal use of unproductive or marginal land such as that of drought prone areas. Sorghum breeding through induced mutations was conducted at Center for the Application of Isotope and Radiation Technology, National Nuclear Energy Agency (BATAN). Durra variety was used as parental materials in the breeding program. Induced mutation was made by gamma irradiation on seed treatments. The optimal radiation dose was found to be between 300-500 Gy. Through selection processes and direct screening for drought tolerance in Gunung Kidul district, ten putative mutant lines had been selected. In dry season, the mutant lines B-68, B-72, B-95 and B-100 produced grain yields of 4.55, 4.50, 4.20 and 4.62 ton ha-1, respectively. These yields were signifi cantly higher than the original parent Durra (3.50 ton ha-1) and the control check varieties UPCA (2.68 ton ha-1) and Higari (3.75 ton ha-1). The mutant lines B-68, B-72, B-94, and B-100 were drought tolerant genotypes having a relatively higher drought index. These mutant lines were promising for further sorghum breeding and development in accordance with attempts of increasing land productivity of drought prone areas. Sorghum cultivation in such areas would promote land conservation and support sustainable agriculture development in the region. Keywords: drought tolerance, induced mutation, mutant lines, sorghu
Heterosis dan Daya Gabung Karakter Agronomi Cabai (Capsicum annuum L.) Hasil Persilangan Half Diallel
Full text link<!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin-top:0cm; margin-right:0cm; margin-bottom:10.0pt; margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman"; mso-ansi-language:IN; mso-no-proof:yes;} @page Section1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> The objective of this research was to study heterosis and heterobeltiosis effects of fi fteen chili genotypes (Capsicum annuum L.), the general combining ability (GCA) and specifi c combining ability (SCA) of six chili inbred lines through half diallel crosses. The experiment was conducted from November 2008 to June 2009 using a Randomized Complete Block Design with three replications at IPB experimental fi eld, Leuwikopo, Darmaga. Heterosis values were predicted based on the average values of their parents whereas heterobeltiosis were predicted based on the average values of the highest parents. Analyses GCA and SCA were based on the Griffi ng’s fi xed model of diallel design method II. Genotype IPB C2 had the highest GCA for fruit weight and fruit length. Genotype IPB C15 had the highest GCA for yield per plant and percentage of marketable fruit. Hybrid IPB C2 x IPB C14 and IPB C9 x IPB C14 had the highest heterosis, heterobeltiosis, and SCA for all fruit characters and yield per plant. Keywords: chili, hybrid, heterobeltiosis, yield
Induksi Umbi Mikro Tanaman Daun Dewa (Gynura pseudochina (Lour.) DC) Secara In Vitro dengan Perlakuan Sukrosa dan Daminozide
Full text link<!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin-top:0cm; margin-right:0cm; margin-bottom:10.0pt; margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman"; mso-ansi-language:IN; mso-no-proof:yes;} @page Section1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> The effects of sucrose and daminozide on in-vitro microtuber formation were evaluated for producing microtubers to supply year round microtubers and to facilitate sterilized explants exchange regionally and internationally. Uninodal stem segment explants were cultured on agar solidifi ed Murashige and Skoog medium supplemented with 3% sucrose, 0.5 mg L-16-benzylaminopurine (BAP), 0.1 mg L-1 α-naphthaleneacetic acid (NAA) for bud multiplication for 3 months. Three nodals stem segment which already formed three perfect leaves were cultured on agar solidifi ed MS medium, 3% sucrose and 1 mg L-1 NAA for two weeks to induce root formation (until ± minimum 60% of the explants rooted). The next step was the induction of three nodal stem segments for microtuber formation on agar solidifi ed MS medium supplemented with 5 mg L-1 BAP and two levels of sucrose, four concentrations of daminozide for 10 weeks. Sucrose at 6% resulted in the signifi cantly highest number of microtuber. The daminozide 41.29 mg L-1 stimulated tuberization at base of the stems and reduce number of microtuber formation in stolon. Keywords: daminozide, Gynura pseudochina (L.) DC, in vitro, microtuber, sucros