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PEWARISAN SIFAT KETAHANAN CABAI TERHADAP INFESTASI APHIS GOSSYPII GLOVER (HEMIPTERA: APHIDIDAE) Daryanto, Ady; Syukur, Muhamad; Maharijaya, Awang; Hidayat, Purnama
Jurnal Hortikultura Indonesia Vol. 8 No. 1 (2017): Jurnal Hortikultura Indonesia
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (373.536 KB) | DOI: 10.29244/jhi.8.1.39-47

Abstract

ABSTRACTAphis gossypii Glover is one of the major pests of chili pepper and can cause damage up to 65% when the population is not controlled. The objective of this research was to elucidate the genetic control of resistance inheritance character of chilli (Capsicum annuum L.) to A. gossypii. Set a population of six generations (P1, P2, F1, F2, BCP1, BCP2 was established from a cross between IPB C20 (resistant parent) with IPB C313 (susceptible parent). Choice test based experiments was applied with two aphids per leaf on a five-week-old seedlings. The results showed that based on number of individual aphids per plant, segregation of resistance and susceptibility characters in the F2 fitted to the normal distribution, indicated that resistance controlled by polygenic genes. Subsequently based of scaling test analysis, resistance characteristics based on the number of aphids per plant categorized overdominan against resistant parent and controlled by many genes. Genes effect for controlling resistance to A. gossypii infestation was recessive. Broad-sense heritability was relatively large for the infestation of aphids per plant, aphids per leaf, and winged aphids while the narrow sense heritability relatively very low on the infestation aphids per plant and per leaf, indicated by the dominant variance was greater than additive variance.Keywords: action genes, Capsicum annuum, dominant varience, heritabilityABSTRAKKutudaun Aphis gossypii Glover adalah salah satu hama pengganggu penting dalam produksi tanaman cabai. Saat populasi kutudaun tidak terkendali dapat menyebabkan kerusakan tanaman cabai hingga 65%. Tujuan penelitian ini adalah mempelajari kendali genetik pewarisan sifat ketahanan cabai (Capsicum annuum L.) terhadap infestasi A. gossypii. Set populasi enam generasi (P1, P2, F1, F2, BCP1, BCP2) dibentuk dari persilangan tetua P1 (IPB C20) dengan nilai infestasi rendah dan tetua P2 (IPB C313) yang bernilai infestasi tinggi. Metode skrining yang digunakan adalah choice test. Jumlah kutudaun yang diinfestasikan adalah dua ekor per daun pada bibit berumur lima minggu. Hasil penelitian menunjukkan bahwa karakter ketahanan cabai terhadap infestasi kutudaun berdasarkan jumlah A. gossypii per tanaman ialah tetua rentan overdominan terhadap tetua tahan dan dikendalikan oleh banyak gen. Gen-gen pengendali ketahanan terhadap infestasi A. gossypii adalah resesif. Nilai heritabilitas arti luas tergolong besar untuk infestasi kutudaun per tanaman, kutudaun per daun, dan kutudaun bersayap, sedangkan heritabilitas arti sempit tergolong sangat rendah pada infestasi kutudaun per tanaman dan per daun yang ditunjukkan oleh proposi ragam dominan lebih besar dibandingkan ragam aditif.Kata kunci: aksi gen, Capsicum annuum, heritabilitas, ragam dominan
HETEROSIS DAN DAYA GABUNG KARAKTER AGRONOMI CABAI (CAPSICUM ANNUUM L.) HASIL PERSILANGAN HALF DIALLEL Daryanto, Ady; Sujiprihati, Sriani; Syukur, Muhamad
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.704 KB) | DOI: 10.24831/jai.v38i2.1795

Abstract

<!-- /* Font Definitions */ @font-face {font-family:Calibri; panose-1:2 15 5 2 2 2 4 3 2 4; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin-top:0cm; margin-right:0cm; margin-bottom:10.0pt; margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-fareast-font-family:"Times New Roman"; mso-bidi-font-family:"Times New Roman"; mso-ansi-language:IN; mso-no-proof:yes;} @page Section1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> The objective of this research was to study heterosis and heterobeltiosis effects of ?  fteen chili genotypes (Capsicum annuum L.), the general combining ability (GCA) and speci?  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 ?  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 Grif?  ng’s ? 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.
Diallel Analysis of Chili Pepper Resistance to Melon Aphid (Aphis gossypii Glover) Infestation in Seedling Phase Daryanto, Ady; Syukur, Muhamad; Maharijaya, Awang; Hidayat, Purnama
Agrotech Journal Vol 3, No 2 (2018): Agrotech Journal (ATJ)
Publisher : Universitas Sembilanbelas November Kolaka

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (896.808 KB) | DOI: 10.31327/atj.v3i2.868

Abstract

Aphis gossypii Glover is one of important insect pest in Indonesia. Genetic analysis of resistance to A. gossypii is required in plant breeding program to obtain host-plant resistance cultivar. Diallel analysis was used to estimate genetic parameters for chili pepper resistance to A. gossypii infestation in early generation. The objective of this research was to estimate genetic parameters of chili pepper resistance to A. gossypii infestation with diallel crossing design. The F1 and parent plants were arranged in randomized competed block design with three replication. Resistance lines was measured using choice test laboratory screening techniques. Two aphids were infested per plant and stopped 12 days after first infestation. Different lines respond was detected as shown by significant numbers of aphid per leaf, total aphid per plant, and total winged aphid per plant. There were no maternal effect and resistance were controlled by recessive and polygenic genes. Gene effects for resistance to aphid’s infestation were additive and dominance. Dominance effect larger than additive effects. Broad-sense heritability values were high but narrow-sense heritability values were very low
EFEKTIVITAS BEBERAPA METODE EKSTRAKSI TERHADAP MUTU BENIH DUA VARIETAS TOMAT DETERMINATE (Solanum lycopersicum Mill.) Daryanto, Ady; Yulianti, Fitri
Jurnal Pertanian Presisi Vol 3, No 1 (2019): Jurnal Pertanian Presisi
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.769 KB) | DOI: 10.35760/jpp.2019.v3i1.1971

Abstract

Tomat (Solanum lycopersicum Mill.) memiliki lendir  di dalam daging buah yang dapat menghambat proses perkecambahan benih. Penelitian ini bertujuan untuk mendapatkan teknik ekstraksi yang tepat untuk menghasilkan benih tomat dengan mutu yang berkualitas. Kegiatan penelitian dilaksanakan di Laboratorium dan Green House F6 Kampus Universitas Gunadarma-Depok pada Oktober 2018 - Januari 2019. Rancangan percobaan yang digunakan adalah Rancangan Kelompok Lengkap Teracak (RKLT) dengan dua faktor yang diulang tiga kali. Faktor yang pertama adalah dua jenis varietas tomat (Tymoti dan Tantyna) dan faktor yang kedua adalah empat jenis metode ekstraksi benih (perendaman  kapur tohor (CaO) 10 g l-1  dan  tohor 15 g l-1 selama 20 menit serta fermentasi selama 12 jam dan 24 jam). Data yang diperoleh dianalisis menggunakan analisis sidik ragam atau uji F pada taraf nyata 5%. Bila terdapat pengaruh yang nyata terhadap perlakuaan maka dilanjutkan dengan uji lanjut Beda Nyata Jujur (BNJ/Tukey) pada taraf nyata 5%. Hasil percobaan menunjukkan bahwa karakteristik ukuran buah dan dimensi tomat varietas Tymoti dan Tantyna berbeda secara nyata. Faktor tunggal jenis varietas menyebabkan perbedaan dalam ukuran bobot 100 butir benih tomat, persentase kecepatan tumbuh benih, dan persentase indeks vigor benih. Sedangkan faktor tunggal metode ekstraksi tidak menyebabkan perbedaan yang signifikan terhadap mutu fisiologis benih dari dua varietas tomat sayur tipe determinate yang diujikan.