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Pemilihan Karakter Agronomi untuk Menyusun Indeks Seleksi pada 11 Populasi Kedelai Generasi F6

Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 34, No 1 (2006): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

High-yielding variety is one of the targets in soybean breeding program. High-yielding variety could be developed through simultaneous selection. Simultaneous selection  using selection index was more efficient  than selection based on an individual trait only.  Objective of  the research was to select agronomic characters for construction selection index  on 11 soybean populations F6 generation based on correlation analysis, path analysis, and heritability.  The correlation analysis  showed that  number of branch,  number of total nod, number of filled pod, number of unfilled pod, number of total pod, and percentage of filled pod have positively and significantly correlated with  yield per plant.  Based on  path analysis, characters number of branch, number of unfilled pod, and number of filled pod have positive direct on yield per plant.   The result also showed that  number  of filled pod has maximum positive direct effect on yield per plant.  Generally, number of total nod, number of filled pod, number of total pod, and percentage of filled pod have higher heritability  than other characters.   Key words: Soybean, correlation, path analysis, heritability, selection index

Pendugaan Parameter Genetik dan Seleksi Galur Mutan Sorgum (Sorghum bicolor (L.) Moench) di Tanah Masam (Estimation of Genetic Parameters and Selection of Sorghum Mutant Lines under Acid Soil Stress Conditions)

Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 37, No 3 (2009): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

  Sorghum is one of high value commodities for food and energy security due to its wide adaptation. The objectives of this research were to study some genetic parameters of sorghum agronomic traits grown under acid soil conditions and to select aluminum-tolerant sorghum mutant lines.  The selection was conducted in an augmented design with 61 lines at the field research station of B2TP-BPPT Lampung. Genetic materials used were mutant lines developed throught gamma irradiation.  The results showed that there was significant differences among the mutant lines for  some agronomic characters observed.  The heritability estimates for agronomic characters were classified as intermediate to high.  Selection based on seed weight and biomass production resulted three best sorghum mutan lines i.e ZH30-29-07, ZH30-30-07, and ZH30-35-07.  These lines showed the best yield and biomass production under acid soil condition.   Key words:  sorghum, acid soil, heritability, selection

Evaluating Genetic Variability of Sorghum Mutant Lines Tolerant to Acid Soil

Atom Indonesia Vol 38, No 2 (2012): August 2012
Publisher : PPIKSN-BATAN

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Abstract

High rainfall in some parts in Indonesia causes soil become acidic. The main constraint of acid soil is phosphor (P) deficiency and aluminum (Al) toxicity which decrease plant productivity. To overcome this problem, it is important to develop a crop variety tolerant to such conditions. Sorghum is probably one of the potential crops to meet that objective. Sorghum has been reported to have wide adaptability to various agro-ecology and can be used as food and animal feed. Unfortunately, sorghum is not Indonesian origin so its genetic variability is still low. From previous breeding works with induced mutation, some promising mutant lines have been developed. These mutant lines were included in the experiment carried out in Tenjo with soil condition was classified as acid soil with pH 4.8 and exchangeable-Al content 2.43 me/100 g. The objectives of this experiment were to study the magnitude of genetic variability of agronomy and grain quality characters in sorghum in order to facilitate the breeding improvement of the species. Plant materials used in this study were ten genotypes, including 6 mutant lines and 4 control varieties. The randomized block design with three replications was used in the experiment. The genetic variabilities of agronomic and grain quality characters existed among genotypes, such as plant height, number of leaves, stalk diameter, biomass weight, panicle length, grain yield per plant, 100 seed weight and tannin content in the grain. The broad sense heritabilities of agronomic characters were estimated ranging from medium to high. Grain yield showed significantly positive correlation with agronomic characters observed, but it was negatively correlated with protein content. Received: 05 December 2011; Revised: 21 June 2012; Accepted: 02 July 2012

Development of Sorghum Tolerant to Acid Soil Using Induced Mutation with Gamma Irradiation

Atom Indonesia Vol 36, No 1 (2010): April 2010
Publisher : PPIKSN-BATAN

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Abstract

Water scarcity still becomes a problem in some dryland agricultural areas in Indonesia. Development of dryland farming system may be focused on crops that are required less water such as sorghum. Sorghum is a cereal crop that is usually grown under hot and dry condition and it is ideal for Indonesia. Sorghum is a good source of food, animal feed and raw material for ethanol. Indonesia is currently looking for alternative renewable energy resources and sorghum is regarded as one of the promising source of bioethanol as bioenergy. Unfortunately, most agricultural land in western part of the country particularly in Sumatera and Kalimantan is dryland and dominated by acid soil. The main constraint of crop production in acid soil is deficiency and Al toxicity. Therefore, development of sorghum cultivation in dryland farming system requires a variety which is tolerant to such conditions. Sorghum breeding for acid soil tolerance had been conducted at PATIR-BATAN by using induced mutations with gamma irradiation. The breeding objective was to search for sorghum genotypes tolerant to acid soil condition and with regard to sorghum use for bioethanol production. A number of 66 breeding materials, including the mutants, had been screened for acid soil tolerance on land with soil pH of 4.2 and 39% Al saturation in Lampung Province. Ten sorghum genotypes had been identified as high yielding in the acid soil condition. The mutant lines GH-ZB-41-07, YT30-39-07, B-76 and B-92 had grain yield higher (>4.5 t/ha) than the control plants (Durra, Mandau and Numbu). Sorghum mutants ZH30-29-07, ZH30-30-07 and ZH30-35-07 were promising for grain-base bioethanol production with ethanol yield exceeded 2,000 l/ha. Meanwhile, the sweet sorghum mutants ZH30-35-07, ZH30-30-07 and ZH30-29-07 had brix content of 11.59, 11.95 and 10.50%, respectively. These mutant lines are promising to be developed further in sorghum breeding since they are highly tolerant to acid soils. Received: 20 November 2009; Revised: 20 April 2010; Accepted: 21 April 2010

IDENTIFICATION OF WIDE COMPATIBILITY VARIETIES IN SOME TROPICAL JAPONICA RICE

Indonesian Journal of Agricultural Science Vol 6, No 1 (2005): April 2005
Publisher : Indonesian Agency for Agricultural Research and Development - MOA

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Abstract

The F1 hybrid sterility in indica/japonica crosses is the major barrier in developing hybrid rice varieties between these two diverse germplasm. The sterility problem in japonica/indica hybrids can be overcome by using wide compatibility genes. The objective of this study was to identify wide compatibility varieties (WCVs) in some tropical japonica rice. Twenty five tropical japonica varieties as male parents were crossed with indica (IR64)and japonica (Akitakomachi) testers as female parents. The crosses were planted following a randomized complete block design with three replications. Varieties having average spikelet fertility of more than 70% with both the indica and japonica testers were rated as WCVs. Result from this study showed that six tropical japonica varieties were classified as WCVs, i.e., Cabacu, Grogol, Kencana Bali, Klemas, Lampung Lawer, and Napa. Hybrid sterility is caused by partial sterility of male and female gametes. The WCVs from the present study can be used in hybrid rice breeding program to solve hybrid sterility in indica/japonica hybrids.

PENAMPILAN BEBERAPA KARAKTER MORFOFISIOLOGI GALUR INTRODUKSI JAGUNG (Zea mays L.) YANG DISELEKSI PADA LINGKUNGAN TANAH MASAM

Pertanian Tropik Vol 2, No 3 (2015)
Publisher : Pasca Sarjana FP USU

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Abstract

The objective of this research was to obtain morpho-physiological characters performances maize inbreed on acid soil condition. The experiment was conducted in a Nested Design with three replications. The first factor was environment, the second factor was 16 inbreds of maize. The experiment was conducted at two environments : acid soil with criteria of Al-dd 0.2 me.100 g-1 and acid soil with criteria of Al-dd 1.87 me.100 g-1. The results showed that tolerant maize inbreed on acid soil condition had small Anthesis Silk Interval and …fasterKeywords : introduction inbreed lines, morpho-physiological character, acid soil.

Pengembangan Tanaman Sela di Bawah Tegakan Tanaman Tahunan

Buletin Iptek Tanaman Pangan Vol 6, No 2 (2011): Desember 2011
Publisher : Puslitbang Tanaman Pangan

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Abstract

Development of Crops Variety Tolerant to Low-light Intensity for Intercropping. The effort to increased food crops production is limited by the lack of arable land. Therefore, there is a need to utilize marginal areas such as land under estate crops which is partly shaded and hence have low light intensity as well as high acidity and drought condition. Production increase is marginal areas, such as lands under canopies of estate crops, could be achieved by improvement in (1) crop adaptation to abiotic stresses and resistance to biotic stress, (2) yield potential, and (3) cultural techniques which are based on knowledge in plant physiology and ecophysiology. A collaborative research on plant physiology, molecular biology and plant breeding is affected to be able to create approviate technologies to overcome those problems. Food crops which are potential to be produced under shaded condition as intercrops are upland rice, soybean, taro, elephant foot yams, and legume crops. Plant adaptation to low-light intensity is achieved through efficiency in light interception (avoidance) and utilization (tolerance). Through integrated research of interdisciplinary approach several promising lines of soybean having high productivity under 50% shading were selected.

Perkembangan Pemuliaan Gandum di Indonesia

Buletin Iptek Tanaman Pangan Vol 8, No 2 (2013): Desember 2013
Publisher : Puslitbang Tanaman Pangan

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Abstract

As a tropical country, Indonesia certainly is not the most suitable place for producing wheat. Wheat flour consumption however, had increased tremendously during the last three decades, that import of wheat grain in 2012 reached 7.2 million ton. Producing wheat had been attempted since 1990’s, utilizing lands at high elevation with drier climate. However, crops competition, especially with the high land vegetables, had put wheat cropping become prohibitive. As early as in 1880, G Wallace experimented of growing wheat in the high land of Timor island. However the crop was never economically established. Selection for genotypes and varieties of wheat for the tropical area had been attempted since 1980’s, and adaptable varieties to the high land had been released, but farmers did not adopt the crop on their cropping system. Breeding research to develop tropical wheat varieties was revived in 2009. By using the modern breeding techniques, including biotechnology, cellular somatic mutation, as well as applying the conventional breeding techniques, varieties adaptable to the lowland tropics are expected to be identified.

EKSPLORASI KONSORSIUM MIKROB FILOSFER DAN RIZOSFER ASAL BERBAGAI EKOSISTEM DI KABUPATEN SIGI PROVINSI SULAWESI TENGAH

Jurnal Agrotech Vol 8 No 1 (2018)
Publisher : FAKULTAS PERTANIAN UNIVERSITAS ALKHAIRAAT

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Abstract

Microbial consortium exploration in an ecosystem is a series of activities aimed at obtaining microb living in a consortium and beneficial to plant growth.The study aimed to obtain leaf and soil samples in various plants within an ecosystem, as a source of a consortium of microbial phyllosphere and rhizosphere to be tested for their effectiveness in increasing the growth and yield of rice crops. The method of determining the location is based on the method of transect sampling/line intersep plot design on an area of 5,196.02 km2. Site determination based on purposive sampling includes ecosystems: rice fields, gardens, pastures and forests.The results showed that, Sigi District has biodiversity in various ecosystems that have potential as source of consortium of microbial phyllosphere and rhizosphere. From the exploration results obtained a sample of 48 species of plants consisting of plants under the level of 30 species, 12 pile poles and 6 types of stakes. The results of the isolation of leaf and soil samples obtained 144 consortium of microbial phyllosphere and 48 consortium of microbial rhizosphere. The obtained consortium was then tested for its effectiveness on the growth and yield of rice crops in the next stage of the study

Pendugaan Parameter Genetik Kedelai Generasi F4 pada Intensitas Cahaya Rendah

Agrotek Vol 2, No 3 (2011): Agrotek
Publisher : Universitas Papua

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Abstract