IARA Vol. XXVI No. 1 Year. 2009 (pdf, 1420 kb) - Pustaka Deptan

Indonesian Agricultural Research Abstracts Vol. 26, No. 1, 2009method of cotton planting (c) proper time of weed control and fertilizer application (d) integrated pestcontrol. The data was collected on the following points: (a) the recommended technology which wasapplied by the farmer, (b) the production facility and manpower utilized by the farmers, (c) the productionof cotton and groundnut, and (d) farmers' income. The result showed that the level of the adoption ofsimultaneous groundnut and cotton cultivation was 79%. By applying the simultaneous cultivation systemfor cotton and groundnut, the farmers' income increased Rp 1,030,620 per hectare, or equivalent to anincrease of 124.7% in comparison to the groundnut yield cultivated monoculturally.F30 PLANT GENETICS AND BREEDING034 ASWANI, N.Betha-carotene content analysis of some oil palm germplasms (Elaeis guineensis Jacq.). Analisiskadar beta-karoten beberapa genotip kelapa sawit (Elaeis guineensis Jacq.)/Aswani, N. (UniversitasSumatera Utara, Medan (Indonesia). Fakultas Pertanian); Pangaribuan, Y.; Oelim, T.M.H. JurnalPenelitian Pertanian ISSN 0152-1197 (2006) v. 25(1) p. 52-59, 2 ill., 1 table; 16 ref. AppendicesELAEIS GUINEENSIS; GENETIC PARAMETERS; HERITABILITY; GENETIC VARIATION;CAROTENOIDS; GENETIC GAIN.The tree germplasms produced by the Indonesian Oil Palm Research Institute (IOPRI), i.e. Dumpy Dura,Marihat Tenera and Zaire Tenera were further studied as sources of commercial hybrids for high bethacarotenecontent (BCC) using non factorial completely randomized design. The ANOVA revealed that thegenotypes significantly influenced BCC. Genetic parameter measurement showed that oil palm BCC wasa high heritable character (heritability/h 2 = 0.67, the genetic variability was 87,870.42, each averagegenetic gain and expected genetic gain was 70% and 501.31). Hence, based on these calculations, thesegermplasms met the international requirement as source for high BCC.035 AZRAI, M.Genetic model estimate and heritability of downy mildew resistance in maize. Pendugaan modelgenetik dan heritabilitas karakter ketahanan terhadap penyakit bulai pada jagung/Azrai, M. (BalaiPenelitian Tanaman Serealia, Maros (Indonesia)); Aswidinnoor, H.; Koswara, J.; Surahman, M. ZuriatISSN 0853-0808 (2005) v. 16(2) p. 101-111, 6 tables; 30 ref.ZEA MAYS; MILDEWS; DISEASE RESISTANCE; GENETIC RESISTANCE; HERITABILITY;GENETIC PARAMETERS.Genetic model of downy mildew resistance in maize caused by Peronosclerospora maydis was estimatedfrom generation means in progenies derived from crosses between the resistant inbred lines Mr10 and Nei9008, and susceptible inbred line CML 161. Seven generations from each cross (parents: P1 and P2, theirprogenies: F1, F2, F3, BC1P1 and BC1P2) were grown in Cikeumeuh-Bogor experimental farm. Theexperiment was arranged in a split plot design with two replications. The genetic material was evaluatedfor downy mildew resistance under artificial screening nursery using spreader rows technique. The jointscaling test was used to determine the genetic model. The calculated values of t-test at levels 5% and 1%indicated that additive [d], dominance [h], and additive x additive [i] gene effects play important role indowny mildew resistance in maize. The genetic components of the [d] and [i] had the same sign for Mr10x CML 161, indicating the interaction type was complementary epistasis. For Nei 9008 x CML 161,genetic components [d] and [i] had different sign indicating the interaction type was duplicate epistasis.Broad sense heritability estimates were high and narrow sense heritability estimates were medium.17