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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy)

Sriani Sujiprihati

Departemen Agronomi dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor (Bogor Agricultural University), Jl. Meranti, Kampus IPB Darmaga, Bogor 16680, Indonesia

Author-ID : 2431702

Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance

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Articles

Heterosis dan Daya Gabung Karakter Agronomi Cabai (Capsicum annuum L.) Hasil Persilangan Half Diallel Ady Daryanto; Sriani Sujiprihati; Muhamad Syukur
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 2 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

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.

Kriteria Seleksi untuk Perakitan Varietas Cabai Tahan Phytophthora capsici Leonian Rahmi Yunianti; Sarsidi Sastrosumarjo; Sriani Sujiprihati; Memen Surahman; Sri Hendrastuti Hidayat
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 2 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Selection criteria for developing Phytophthora blight-resistant varieties of pepper had been done in both laboratory and ﬁ eld conditions. Resistance screening were conducted on 28-days-old pepper plants grown in 72-cell ﬂ ats by inoculating 5 mL of inoculum (contain 105 zoospore mL-1) to the base of each plant. Phytophthora capsici isolate used in this experiment was TG01, which then identiﬁ ed as race-3. The evaluation of pepper genotypes characteristics were conducted in ﬁ eld. Eight characters demonstrated a wide genetic variability; those characters were resistance to Phytophthora blight, infection period, dicotomous height, canopy width, fruit weight, fruit length, fruit diameter and production. These characters along with fruit wall thickness, chlorophyll-a, chlorophyll-b, total chlorophyll had high heritability values. Using path analysis infection period, dicotomous height and fruit diameter are recommended to be simultaneously used as selection criteria for developing Phytophthora blight resistant pepper varieties. Keywords : capsicum, Phytophthora capsici, selection criteria, path analysis

Analisis Kedekatan Hubungan antar Genotipe Pepaya Berdasarkan Karakter Morfologi dan Buah Ketty Suketi; Roedhy Poerwanto; Sriani Sujiprihati; , Sobir; Winarso D. Widodo
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 2 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

A study was conducted to determine the variation and relationships among papaya genotypes based on morphological and fruit characteristics in order to produce high quality papaya fruits. Fruit characterization study is very useful for genotype improvement and genotype classiﬁ cation of papaya. In this study the morphological characters of 36 genotypes were analyzed to determine their phenotypic variabilities. The relationships between genotypes based on all of the morphological and fruit characteristics were tested by subjecting the data to multivariate principal component analysis and to cluster analysis. Based on the dendrogram generated from vegetative and generative characters, the 36 genotypes could be grouped into 11 clusters on a threshold of 1.6 and formed 6 clusters on a threshold of 1.8. The dendrogram was able to explain the close relationship between IPB 5 x IPB 1 and IPB 5 x IPB 4, IPB 2 and IPB 7, IPB 1 and IPB 3 genotype. The scattered diagram of generative variable divided the papaya genotypes into three groups based on fruit sizes i.e small group (IPB 1, IPB 3, IPB 4, IPB 3 x IPB 4, IPB 1 x IPB 9), medium group (IPB 5, IPB 7, IPB 8, IPB 9) and big group (IPB 2, IPB 10). The IPB 1, IPB 3 and IPB 4 were different from IPB 2 in fruit shapes, petal length of male ﬂ owers, inﬂ orescence size and fruit length. The hybrid plants obtained from crossings with IPB 10 were different from the other genotypes in the colours of female-, hermaphrodite-, and male ﬂ ower-lobes. Subsequently the scatter diagrams also revealed that several genotypes i.e. IPB 2 x IPB 6, IPB 1 x IPB 5, IPB 1 x IPB 9, IPB 5 x IPB 1 and IPB 5 x IPB 2 had superior characters ideotype similar to IPB 1, IPB 3 and IPB 8 genotypes. Keywords: Carica papaya, hermaphrodite, female, dendrogram, scatter diagram, ideotype

Pengaruh Perlakuan Ethyl Methane Sulfonate pada Tanaman Cabai (Capsicum annuum L.) dan Ketahanannya terhadap Chilli Veinal Mottle Virus (ChiVMV) Ifa Manzila; Sri Hendrastuti Hidayat; Ika Mariska; Sriani Sujiprihati
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 3 (2010): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Ethyl Methane Sulfonate (EMS) may induce mutation leading to somaclonal variation if it is used at the appropriate combination of EMS concentration and exposure time. Variation in somaclonal might be valuable as a source of resistance to plant pathogens including plant viruses. This study was aimed 1) to determine the optimum EMS concentration and incubation time that may induce somaclonal variation in chilli pepper; and 2) to evaluate the resistance of the somaclone to ChiVMV infection. Shoot-tip explants of fi ve chilli pepper genotypes (Jatilaba, ICPN 12#4, PBC495, Helem, and Gelora) were treated with EMS at combination of different concentrations (0.25%, 0.5% 1.0% and control), and incubation time (15, 30, 60 min). Subsequently, each explant was grown in multiplication media (MS media + 5 mg L -1 BAP + 0.5 mg L-1 TDZ), rooting media (MS media + 1 mg L-1 NAA), and acclimatization media (mixture of soil : sand : compost 2:1:1 w/w). Our results showed that the higher EMS concentration and the longer incubation period the smaller the number of survive explants. The highest survival rate 20.4 % was achieved with 0.5% EMS in combination with 60 min incubation period. This treatment combination also showed induction of phenotypic variation. Two somaclonal plants derived from Gelora genotype, designated as somaclones K1 and K2, survived until fruit development and maturation. A total of 245 progenies of K1 and 243 progenies of K2, respectively were evaluated for their resistance to ChiVMV infection through mechanical inoculation using ChiVMV-Cikabayan isolate. Following the detection of ChiVMV using DAS-ELISA, it was confi rmed that 4.09% of the somaclonal progenies were resistance to ChiVMV. Keywords: Capsicum annuum L., ChiVMV, ethyl methane sulfonate, induce mutation, resistance

Co-Authors Ady Daryanto Ifa Manzila Ika Mariska Ketty Suketi Memen Surahman Muhamad Syukur Rahmi Yunianti Roedhy Poerwanto Sarsidi Sastrosumarjo Sobir Sobir SRI HENDRASTUTI HIDAYAT Winarso D. Widodo

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