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Sobir ,

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Author-ID : 2432904

Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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Pengembangan Kriteria Seleksi untuk Perakitan Terung (Solanum melongena L.) Berdaya Hasil Tinggi Faradila Danasworo Putri; Sobir ,; Muhamad Syukur; dan Awang Maharijaya
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 45 No. 2 (2017): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Eggplants (Solanum melongena L.) are consumed worldwide in a variety of colors, shapes and sizes, thus vegetable plant breeders place great interest in developing high yielding genotypes in response to the population growth and the need to increase vegetable production. This research was aimed to determine the proper character as selection character for breeding high yielding eggplants by using estimated heritability value, coefficient of genetic diversity, characters correlation and path analysis. The experiment was conducted during 2014 to August 2015 at Cikabayan Experimental Field, Tajur Experimental Field and Pasir Sarongge Experimental Field, IPB, West Java. A total of 12 characters was observed in the 25 genotypes. Eleven characters has a high estimated heritability value and high coefficient of genetic diversity value. Those characters were time of flowering, time of harvest, fruit length, fruit weight, fruit diameter, plant height, stem length, fruit apical scar length, calyx length, the number of fruits per plant and fruit weight per plant. Results of correlation and path analysis showed that fruit length, fruit weight, fruit diameter, stem diameter, calyx length and number of fruits per plant have a direct positive effect on fruit weight per plant. Fruit weight, fruit diameter and number of fruits per plant are suitable characters in determining the selection criteria for developing high productivity eggplant.Keywords: path analysis, correlation, heritability, genetic diversity coefficient

Identifikasi Penanda SSR yang Berasosiasi dengan Bobot Tandan Buah Kelapa Sawit (Elaeis guineensis Jacq.) Dwi Yono; Yudiwanti Wahyu; Sobir ,; dan Nurita Toruan-Mathius
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 45 No. 1 (2017): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Oil palm is a perennial oil crop that contribute the most important source of vegetable oil in the world. Oil palm breeding cycle take a long period, therefore molecular marker-assisted selection (MAS) is required to shorten the selection time. This MAS require the associated marker to desired trait, particularly for yield and the component that as a complex trait and depend on genetic background. The aim of this study was to obtain SSR marker that associated with average of bunch weight (ABW). Plant material was used in this study is Tenera population derived from Deli Dura x AVROS Pisifera. Seven SSR markers from public database were associated to ABW trait. Molecular data analysed for SSR markers profile which consisted of allelic diversity, heterozygosity level, and polymorphism information content (PIC). Association between SSR markers to ABW traits was performed with single marker analysis using one way analysis of variance. The results showed that SSR markers were able to amplify DNA with two to three number of alleles with the average of 2.3 alleles per locus. ABW trait for this population was significantly associated with mEgCIR3428 marker. This marker may be used in the selection of Deli Dura and AVROS Pisifera palm on the next selection cycle.Keywords: Average of bunch weight, AVROS Pisifera, Deli Dura, single marker analysis

Keragaman Morfologi dan Kandungan Tanin pada Tanaman Leunca [Solanum nigrum (L.)] Dea Nadila; Sobir ,; dan Muhamad Syukur
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 47 No. 1 (2019): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Black nightshades [Solanum nigrum (L.)] is an indigenous vegetable originatied from tropical and subtropical regions. In Indonesia, black naightshades widely spread in Java, especially West Java. Black nightshades has a bitter taste caused by the content of tannins. The objective of this study was to identify and analyze the morphological and tannin content of 20 black nightshades accessions. The research was started with germplasm exploration in November 2015-February 2016, followed by planting and analysis until September 2016 at a laboratory of the Center for Tropical Horticultural Studies (PKHT) IPB. The experiment was arranged in a single-factor randomized complete block design with three replications. The results from cluster analysis based on morphological variability showed that the accessions of black nightshades can be grouped into two groups. The accessions had different fruit tannin contents, and some accessions can be selected for breeding material.Keywords: group analysis, indigenous vegetable, qualitative character, quantitative character

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