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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Jurnal Hortikultura Indonesia Jurnal Hortikultura JURNAL AGROTEKNOLOGI AGRIVITA, Journal of Agricultural Science Communications in Science and Technology Journal of Tropical Crop Science

Willy Bayuardi Suwarno

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

Author-ID : 586666

Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Engineering

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Articles

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The Usefulness of Molecular Markers Approach for Developing Heterotic Groups in Maize Suwarno, Willy B
Journal of Tropical Crop Science Vol 1 No 2 (2014): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

The phenomenon of heterosis provides a greatopportunity for plant breeders to gain greaterperformance and yield in the hybrids compared to theirinbred line parents. In most cross-pollinated crops likemaize, heterosis plays an important role as theperformance of the hybrids is of a great value. Heterosisgain much interest until recently and current studies stillattempt to elucidateone of these is utilizing molecularmarkers to estimate genetic distances among inbredlines followed by developing putative groups. In a welldened heterotic group, between-groups mating areexpected to produce better hybrids than within-groupsmating. Some studies of marker-aided heterotic groupdevelopment resulted in functional heterotic groups;while some other reported that the groups failed toprovide evidence of heterosis in the hybrids.Considering the prediction of hybrids' performance willdepend on genetic background of inbred lines, andmarkers technology are continuously improved, there isstill a good opportunity to obtain useful heterotic groupsfor a particular breeding population.Keywords: maize breeding, genetic distance, heterosis,molecular markers.

Proliferation of Protocorm-Like Bodies of Dendrobium mannii and Dendrobium mirbelianum in Chitosan-containing Media In Vitro Rahmah, Syifaur; Wiendi, Ni Made Armini; Suwarno, Willy B.; Krisantini, Krisantini
Journal of Tropical Crop Science Vol 2 No 3 (2015): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Dendrobium mannii and Dendrobium mirbelianum were rare and endangered orchid species. In vitro micro propagation could be used to conserve and proliferate these species. The aims of this study were to determine the effects of chitosan on proliferation of the protocorm-like-bodies (PLBs) of in vitro grown Dendrobium mannii and D. mirbelianum. Chitosan has been reported as an important component to promote orchid growth in vitro. In this study chitosan was included in the in-vitro media at the concentrations of 0, 1, 2, 3, and 4 mg.L-1. The highest PLBs formation, clump diameter, and fresh weight on D. mannii were obtained from explants cultured on medium supplemented with 1 mg.L-1 chitosan. After 14 weeks of culture, fresh weight, clump diameter and average number of PLBs of D.mannii were 29.52 %, 33.00 % and 35.88% greater at chitosan (1 mg.L-1) compared to control media. D. mirbelianum treated with low chitosan concentrations (1 and 2 mg.L-1) had 65.71% more leaves than those without chitosan treatment. Chitosan, however, had an adverse effects on growth of both species at 4 mg.L-1. Medium contain 4 mg.L-1 chitosan induced PLBs proliferation of D.mannii, but inhibited PLBs proliferation of D.mirbelianum. These results suggested that chitosan had important roles in PLB proliferation and could be used for the propagation of D. mannii PLBs in vitro. Keywords: rare orchid species, in-vitro

Evaluation of Yield Components of New Sweet Corn Hybrids in Bogor, Indonesia Aprilianti, Devi Kurnia; Syukur, Muhamad; Suwarno, Willy Bayuardi
Journal of Tropical Crop Science Vol 3 No 1 (2016): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

The demand of sweet corn in Indonesia has been increasing; therefore breeding efforts are aimed for high yielding sweet corn varieties with superior quality. This research was aimed to evaluate the yield of five newly developed sweet corn hybrids compared to the commercial varieties. The research was conducted at the Leuwikopo experimental field of IPB, and Laboratory of Genetics and Plant Breeding, Department of Agronomy and Horticulture, IPB Darmaga campus from September to December 2015. The experiment was arranged in a completely randomized block design with three replications. Five new sweet corn hybrids, “ JM8 x JM2”, “JM8 x JM7”, “JM16 x JM8”, “JM17 x JM6” and “JM17 x JM7”, and four commercial varieties, “Bonanza”, “Master Sweet”, “Sugar 75” and “Sweet Boy”, were tested. The results showed that the new hybrids vary in plant height, days to anthesis, days to silking, ear height, ear length, sugar content, number of kernel rows, the weight of husked ear, and number of ears per plant, downy mildew infected area, and productivity. F1 of “JM8 x JM2” has longer ears than “Master Sweet” and “Sugar 75”, higher sugar content than “Sugar 75”, and higher resistance against downy mildew than “Master Sweet” and “Sweet Boy”.

Inheritance Of Shape And Kernel Color In Sweet Corn Using JM2 And JM4 Populations Nugroho, Rizki Anjal Puji; Syukur, Muhamad; Suwarno, Willy Bayuardi
Journal of Tropical Crop Science Vol 5 No 3 (2018): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Corn kernel is one of the most important characters that correlate with corn yield and quality. Sweet corn kernels can be distinguished by its color which is either yellow and white or pale yellow. Sweet corn breeding by crossing genotypes with different kernel colors will affect the inheritance pattern of kernel color. The aims of this research were to understand the inheritance pattern in sweet corn kernel color by crossing yellow and pale yellow color with red and purple corn kernels using qualitative and quantitative approaches. Genetic materials consisted of P1 (JM2 and JM4) and P2 (Red and Purple) and F1, F2, F3, and F1 reciprocals. P1 consists of JM2 and JM4 with flint shape with yellow and pale yellow color; P2 consists of Red and purple with non-yellow colored kernel and flint shape. The results showed maternal effect influenced the kernel color, but did not affect the kernel shape. Epistatic effects were found in kernel shape but it was co-dominant on kernel color inheritance. Broad-sense heritability values were high for all quantitative variables. Keywords : color, heritability, pale yellow, purple, red, shape

Interaksi Genotipe × Musim Karakter Percabangan Malai Tiga Genotipe Padi Sawah Tri Hastini; Willy Bayuardi Suwarno; Munif Ghulamahdi; Hajrial Aswidinnoor
Indonesian Journal of Agronomy Vol. 48 No. 1 (2020): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Rice panicle branching architecture is an important trait affecting yield, but its responses across different seasons have not been extensively studied yet. The aim of this study was to evaluate the panicle branching responses of fifteen rice genotypes on different seasons. This study was conducted from April 2017 to March 2018 at Babakan Experimental Station, IPB University, Dramaga, Bogor. Fifteen genotypes as treatments were grown in the dry and wet seasons to study the genotypes × seasons interaction effects on panicle branching. The experiment was laid out in a randomized complete block design with four replicates. Individual analysis and combined analyses over seasons were performed. The results revealed that the genotype, season, and genotype × seasons had significant effects on panicle length, number of primary branches, length of primary branches, and length of secondary branches. The results of the study may be useful for rice breeders in conducting selection based on panicle branching. Keywords: dry and wet season, genotypes × seasons, rice breeding

Agronomic Performance and Selection of Doubled-Haploid Rice Lines for Rainfed Lowland Paddy Field da Cunha, Rojino; Purwoko, Bambang Sapta; Dewi, Iswari Saraswati; Suwarno, Willy Bayuardi
Journal of Tropical Crop Science Vol 7 No 03 (2020): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.7.03.148-161

Rainfed lowland rice cultivation is an alternative to increase national rice production. Breeding of high yielding rice varieties suitable for rainfed lowland condition can be accelerated by using doubled-haploid (DH) as genetic materials. This study aimed at obtaining information on the agronomic performance including yields in several DH rice lines and selecting DH lines suitable for rainfed lowland paddy field. The experimental design used was a Randomized Complete Block Design with 3 replications. The treatment was thirty DH lines and 4 check varieties namely RJ31 Ciherang, RJ32 Inpari 18, RJ33 Inpari 40, and RJ43 Inpari 41. The results showed that there were variability in all agronomic performances, i.e., plant height, number of tillers, days to heading and to harvest, panicle length, number of filled and empty grains, 1000-grain weight and grain yield. The DH lines, namely RJ19 DR8-43-3-1 and RJ25 DR10-14-1-1, gave the same productivity as 4 check varieties. Index selection showed that twelve DH lines with medium number of productive tillers, early maturing, and productivity of more than 4.40 tons.ha-1 were selected for further evaluation.

Evaluation of Silica Uptake from Foliar-Applied Silicon Nanoparticles in Melon (Cucumis melo L.) under Soilless Culture Badrieh, Haian Amin; Widodo, Winarso Drajad; Susila, Anas Dinurrohman; Suwarno, Willy Bayuardi
Journal of Tropical Crop Science Vol 8 No 03 (2021): Journal of Tropical Crop Science
Publisher : Department of Agronomy and Horticulture, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jtcs.8.03.135-145

Melon (Cucumis melo L.) is a fruit commodity that gets a great interest to be developed in Indonesia and has a high nutritional value. However, the fungal infection and pathogens in melon cultivation are considered significant problems that are difficult to manage. Therefore, efforts are needed to improve the productivity and quality of melon and prevent pest and disease attacks. One mineral nutrient that is assumed to enhance plant resistance and increase the quality and production of melon is silica. The purpose of the research was to evaluate silica absorption from foliar-applied silicon nanoparticles in melon under soilless culture and improve melon fruit's growth and quality by applying silica fertilizer. The experimental design used was a split-plot randomized complete block design 3 x 2 factorial pattern with four replicates. The main plot factor is silica fertilizer (Novelgro, water-soluble), consisting of three silica concentrations of 0.67; 1.33 ppm, and control. The spray volume of each treatment was 160 ml per plant with seven days' intervals and a frequency of three times. The subplot factor is melon varieties consisting of “Alisha” and “Glamour”. The findings showed that silica fertilizer significantly increased the plant height, stem diameter, internode length, total number of hermaphrodite flowers, number of hermaphrodite flowers that are swelling, while decreased the fruit moisture content and gave the best average fruit position. Instead, The “Glamour” variety gave the best response to plant growth and fruit quality. Moreover, the melon plant could absorb silica in the low category (<1% Si). The highest silica contents were found in the “Alisha” cultivar leaves and the “Glamour” cultivar's rinds treated with the silica concentration of 1.33 ppm as much as 0.34% and 0.30%, respectively.

Potensi Hasil dan Mutu Beras Sepuluh Galur Harapan Padi untuk Lahan Rawa Pasang Surut Aris Hairmansis; Hajrial Aswidinnoor; , Supartopo; Willy Bayuardi SuwarnoSuwarno; Bambang Suprihatno; , Suwarno
Indonesian Journal of Agronomy Vol. 41 No. 1 (2013): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Breeding programs to improve rice varieties for tidal swamp areas have successfully developed a number of promisingbreeding lines. The objectives of this study were to evaluate the performance of ten advance breeding lines in multilocationyield trials and to analyze grain quality of the lines. The lines and two check rice varieties, IR42 and Batanghari, wereevaluated in replicated yield trials in six different tidal swamp environments. Grain quality of these lines were analyzed todetermine physical and chemical properties of the milled and cooked rice. Result from multilocation yield trials showedthat the breeding lines had higher yield potential compared to popular variety IR42 and their yields were comparable tothe control variety Batanghari. The lines showed different adaptability against different environments; some of the linesdemonstrated wide adaptability while the others showed specific adaptation ability. All of the lines had good grain qualitywhile they had different shape and texture which made them potential to be accepted in different regions. The result fromthis study indicated that all of the lines have potential to be commercially cultivated in tidal swamp areas. In addition, dataobtained from this study have been used in the registration of three lines as new varieties for swampy area namely IPB 1RDadahup, IPB 2R Bakumpai and Inpara 6.Keywords: adaptation, grain quality, multilocation trials

Karakteristik Buah Melon (Cucumis melo L.) pada Lima Stadia Kematangan Amalia Nurul Huda; Willy Bayuardi Suwarno; dan Awang Maharijaya
Indonesian Journal of Agronomy Vol. 46 No. 3 (2018): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Melon breeding for fruit quality improvement is important to produce new varieties that meet consumers’ demand. The aim of this study was to elucidate the fruit characteristics of melon at five different maturity stages, involving several genotypes belonging to two cultivar groups: reticulatus and inodorus. The experiments were conducted in three planting seasons: (1) January-March 2015 (13 genotypes), (2) December 2015-February 2016 (56 genotypes), (3) February-May 2016 (9 genotypes). These trials were conducted at the Tajur II experimental station of IPB, Bogor, and each trial was arranged in a single factor randomized complete block design with three blocks. Maturity stages was determined based on fruit rind color and net coverage, and their effects on fruit quality were studied using combined analyses over seasons. Maturity stage significantly affected the fruit length, fruit diameter, flesh thickness, fruit weight, and sugar content. The average weight of the fruits at maturity stage 4 (838.90 g) and 5 (931.79 g) was significantly greater than that of stage 1 (584.42 g). The sugar content increased from maturity stage 2 (5.51 oBrix) to 3 (6.13 oBrix) and to 5 (8.18 oBrix). Fruit weight significantly correlated with fruit length (r = 0.53), fruit diameter (r = 0.85), fruit rind thickness (r = 0.33), and flesh thickness (r = 0.63). Maturity stages affected the quality of melon fruits, and therefore the determination of appropriate harvesting criteria is important in melon cultivations.Keywords: cantalupensis, correlation, inodorus, fruit quality, skin colour

Parameter Genetik dan Deteksi Segregan Transgresif pada Populasi Kacang Tanah (Arachis hypogaea L.) Generasi F3 Siti Nurhidayah; Yudiwanti Wahyu; dan Willy Bayuardi Suwarno
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

ABSTRACTSelection of transgressive segregants is considered as one effective way of obtaining peanut genotypes with high yield on early segregation. The objective of the study was to estimate genetic parameters and to identify transgressive segregants of peanut family in F3 generation. The experiment was conducted at Leuwikopo, Dramaga, Bogor on August-Desember 2014. The genetic materials evaluated were 218 family F3 generation from 5 biparental population (Jerapah/GWS79A1, GWS79A1/Zebra, GWS79A1/Jerapah, Zebra/GWS79A1 and Zebra/GWS18) and 4 commercial varieties as checks (Gajah, Jerapah, Sima, and Zebra). The experiment was conducted in an augmented randomized complete block design with 4 replications for the checks. The results showed that quantitative characters had continuous distribution and they were controlled by many genes with additive, dominance, complementary epistasis, or additive epistasis gene action. Total number of pod and number of pod had high heritability and moderate genetic coefficient of variation. Selection with 10% intensity showed that 22 families had large total number of pods while six families had larger total number of pods than both parents. Family U2-39 estimated was identified as a putative transgressive segregant with high total number of pod and had smaller variance within family than Sima variety. Keywords: additive,gene action, heritability, GCV

Co-Authors , Krisantini , Supartopo , Suwarno Adlan Agus Purwito Amalia Nurul Huda Amalia Nurul Huda Amalia Nurul Huda Amin Nur Amy Estiati Anas Dinurrohman Susila Anggita Duhita Anindyajati Aprilianti, Devi Kurnia Aris Hairmansis Awang Maharijaya Badrieh, Haian Amin Bambang Sapta Purwoko Bambang Suprihatno Bayu Pramono Wibowo Budi Indra Setiawan Chusnul Arif Cucu Gunarsih da Cunha, Rojino dan Heni Safitri dan Iswari Saraswati Dewi dan Muhammad Azrai dan Muhammad Azrai Danu Kuncoro Dewi Citra Sari Dian Rakhmad Diny Dinarti Efendi, Darda Ekasari Putri, Nurwanita Elvita Dwi Jayaningsih Endang Gunawan Eny Widajati Ermelinda Maria Lopes Hornai Fitrah Ramadhan HAJRIAL ASWIDINNOOR Helvi Ardana Reswari Heru Anggara Hiroshi Matsuda Indrastuti A. Rumanti Indrastuti Apri Rumanti Indrastuti Apri Rumanti Indrastuti Apri Rumanti Iswari Saraswati Dewi Iswari Saraswati Dewi Iswari Saraswati Dewi Iswari Saraswati Dewi Juharni Jundi Aiman Abdullah Koremasa Tamura Kuswandi Kuswandi Maya Melati Miftahur Rizqi Akbar Mohammad Syafii Mondjeli Constantin Muhamad Askari Muhamad Syukur Muhammad Fuad Anshori Muhammad Jauhar Firdaus MUNIF GHULAMAHDI Mutiyara Sani Nafisah Nailatul Karomah Ni Made Armini Wiendi Nindita, Anggi Nugroho, Rizki Anjal Puji Nurul Khumaida Rahmah, Syifaur Rina Hapsari Wening Rina Hapsari Wening Rudiyanto Rusianto Satyanto Krido Saptomo Sherly Rahayu Sintho W. Ardie Sintho Wahyuning Ardie Siti Hapita Sari Siti Nurhidayah Sobir Ridwani Sobir Sobir Sugiyanta Surjono Hadi Sutjahjo Tri Hastini Tri Hastini Trias Sitaresmi Trikoesoemaningtyas Trikoesoemaningtyas Umi Salamah Wida W. Khumaero Winarso D. Widodo Yudiwanti Wahyu Yudiwanti Wahyu Yudiwanti Wahyu Endro Kusumo Yundari, Yundari

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