Trias Sitaresmi
Balai Besar Penelitian Tanaman Padi Jalan Raya 9 Sukamandi, Subang, Jawa Barat

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Combining Ability of Several Introduced and Local Chilli Pepper (Capsicum annuum L.) Genotypes and Heterosis of the Offsprings Sitaresmi, Trias; Sujiprihati, Sriani; Syukur, Muhamad
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 38, No 3 (2010): Jurnal Agronomi Indonesia
Publisher : Bogor Agricultural University

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Abstract

The objective of the study was to identify the combining ability of several introduced and local chilli genotypes and heterosis effects of their offsprings, as a result of the hybridization process. This information will be used for production of hybrid varieties. The study was conducted from November 2006 to May 2007 at Tajur experimental station, Bogor, West Java, Indonesia. The five parents with their ten F1 hybrids were evaluated in a randomized complete block design (RCBD) using three replications. The results showed that hybrid IPB C15 x IPB C19 had the highest fruit weight per plant, and hybrid IPB C8 x IPB C19 had the highest heterosis for this character. Hybrid IPB C8 x IPB C15 has highest number of fruits per plant and showed heterosis effects. Crosses among introduced and local genotypes resulted a high heterosis values.  Additive variance of weight and number of fruits per plant were greater than the dominant variance. IPB C19 had the best general combining ability for fruit weight per plant character.   Keywords: heterosis, heterobeltiosis, combining ability, capsicum
Pemanfaatan Plasma Nutfah Padi Varietas Lokal dalam Perakitan Varietas Unggul Sitaresmi, Trias; Wening,, Rina H.; Rakhmi, Ami T.; Yunani, Nani; Susanto, Untung
Buletin Iptek Tanaman Pangan Vol 8, No 1 (2013): Juni 2013
Publisher : Puslitbang Tanaman Pangan

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Abstract

Indonesia is rich in rice germplasm which functioning as genetic resources, consisting of local varieties and wild species. Million years ago, Indonesian archipelago was an integral part of the Asia continent, which is considered as the center of origin of rice. Vavilov postulated that India is the Center of Origin of rice and Indonesia could be considered as the Secondary Center of Origin of rice. Local varieties had been planted by farmers for many generations on specific agroecology, so that presumably they are resistant/tolerant to biotic or abiotic stresses on a specific location. Farmers had selected seeds from the population, based on good adaptation or god quality for the next planting season. They selected plants that have good grain quality and good cooking taste. Therefore, most of the local varieties have a good grain quality and their taste quality met the consumer’s preference. Germplasm research on rice in Indonesia had identified local varieties which are resistant/tolerant to pests and diseases including: ganjur, bacterial leaf blight, orange leaf blight, brown planthopper, leaf blast, neck blast, white striped leaf, tungro, drought, Al toxicity, Fe toxicity, tolerant to abiotic stress such as salinity, cold temperature, and shade. The local varieties had been used in the breeding program, however, the number of germplasm used as parental crosses is still low. Research on gene analyses, gene mapping, and study on the gene inheritance are needed, to facilitate an efficient use of the genetic resources. Use of local varieties as parental hybridization is recommended, to get superior specific genotype on the new varieties, so that released varieties should have a broad genetic variability.
Combining Ability of Several Introduced and Local Chilli Pepper (Capsicum annuum L.) Genotypes and Heterosis of the Offsprings Sitaresmi, Trias; Sujiprihati, Sriani; Syukur, Muhamad
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol 38, No 3 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy

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Abstract

The objective of the study was to identify the combining ability of several introduced and local chilli genotypes and heterosis effects of their offsprings, as a result of the hybridisation process. This information will be used for production of hybrid varieties. The study was conducted from November 2006 to May 2007 at Tajur experimental station, Bogor, West Java, Indonesia. The fi ve parents with their ten F1 hybrids were evaluated in a randomized complete block design (RCBD) with three replications. The results showed that hybrid IPB C15 x IPB C19 had the highest fruit weight per plant, and hybrid IPB C8 x IPB C19 had the highest heterosis for this character. Hybrid IPB C8 x IPB C15 has highest number of fruits per plant and showed heterosis effects. Crosses among introduced and local genotypes resulted a high heterosis values. Additive variance of weight and number of fruits per plant were greater than the dominant variance. IPB C19 had the best general combining ability for fruit weight per plant character. Keywords: capsicum, combining ability, heterobeltiosis, heterosis
Daya Hasil Galur-Galur Elit Padi di Lahan Sawah Rawan Salin di Cilamaya Wetan Karawang Nafisah, Nafisah; Hairmansis, Aris; Sitaresmi, Trias
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol 6, No 1 (2017): JLSO
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Abstract

Nafisah et al, 2017. Grain Yield of Rice Elite Lines Under Saline Prone Condition in Cilamaya Wetan, Karawang Subdistrict West Java. JLSO 6(1):21-32.Utilization of high yielding rice varieties tolerant to salinity is one way to maintain yield sustainability in salt affected rice area. As many as 30 elit lines and 4 varieties checks were tested in saline prone area in Muara Baru, Cilamaya Wetan sub district, Karawang, West Java. The trial was arranged in Randomized Block Design with three replications. Twenty eight old seedlings were planted in 3x4 m2 plot size with 25 cm x 25 cm planting space. Analysis variance showed two elit lines (1131-Ski-4 dan IR86385-50-2-1-B-SKI-2) yielded 5.48 dan 5.64 t/ha, respectively. These yield were significant higher than those of two popular checks planted by local farmers, i.e.  Mekongga and Sintanur which yielded about 4,44 t/ha. Beside 11 lines  had yield 0,5 t/ha higher than that of popular check variety.  Correlation analysis showed grain yield highly positive correlated with productive tiller number and filled grain number, while thousand grain weight highly positive correlated with plant height. Screening for salinity tolerance in seedling stage done in screen house showed that both 1131-Ski-4 dan BP14082-2b-2-5-TRT-35-2-SKI-1 consistently tolerant under salinized Yoshida solution at 12 dSm-1. These two lines are very potential for further tested in saline prone area.