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All Journal Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Buletin Agrohorti Jurnal Fitopatologi Indonesia Jurnal Hortikultura Indonesia (JHI) Jurnal Hortikultura Journal of Tropical Crop Science

Ketty Suketi

Departemen Agronomi Dan Hortikultura, Fakultas Pertanian, Institut Pertanian Bogor. Program Studi Agronomi Dan Hortikultura, Sekolah Pascasarjana Institut Pertanian Bogor, Jl. Meranti Kampus IPB Dramaga, Bogor 16680, Indonesia.

Author-ID : 390299

Agriculture, Biological Sciences & Forestry Economics, Econometrics & Finance Medicine & Pharmacology

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Karakter Fisikokimia Buah Melon Cantaloupe (Cucumis melo L. var. Cantaloupe) yang Dipanen Awal: Physicochemical Characteristics of Early Harvested Cantaloupe Melon (Cucumis melo L. var. Cantaloupe) Nidya Putri Zulia Kusuma Wardani; Suketi, Ketty; Arif, Abdullah Bin
Jurnal Hortikultura Indonesia (JHI) Vol. 16 No. 1 (2025): Jurnal Hortikultura Indonesia (JHI)
Publisher : Indonesian Society for Horticulture / Department of Agronomy and Horticulture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jhi.16.1.17-23

Melon cantaloupe (Cucumis melo L var. Cantaloupe) merupakan buah klimakterik sehingga cepat mengalami kemunduran kualitas setelah buah dipanen. Buah melon cantaloupe yang dipanen awal setelah matang fisiologi dapat memperpanjang umur simpannya. Penelitian ini bertujuan untuk menganalisis pengaruh fisikokimia buah melon cantaloupe yang dipanen awal selama penyimpanan. Penelitian dilakukan di greenhouse Kebun Tajur, Pusat Kajian Hortikultura dan Tropika, Institut Pertanian Bogor (PKHT IPB) dan Laboratorium Pascapanen dan Biomassa Departemen Agronomi dan Hortikultura IPB. Pengamatan kualitas pascapanen dilakukan menggunakan metode nondestruktif dan destruktif. Parameter yang diamati meliputi laju respirasi, produksi etilen, perubahan kerutan kulit, PTT, ATT, dan kandungan vitamin C. Hasil penelitian menunjukkan bahwa buah melon cantaloupe yang dipanen 32 hari setelah antesis (HSA) mengalami puncak respirasi pada 7 hari setelah panen (HSP), puncak produksi etilen pada 9 HSP, pengerutan kulit buah pada 18 HSP, kandungan PTT tertinggi (6.99 oBrix), ATT (0.02 mL g-1), rasio PTT/ATT (493.75), dan kandungan vitamin C (20.65 mg (100 g)-1). Kata kunci: buah klimakterik, kualitas pascapanen, umur simpan, produksi etilen

The Effects of Different Rates of Chicken Manure and Harvest Intervals on the Bioactive Compounds of Bitter Leaf (Vernonia amygdalina Del.) Betty, Betty; Aziz, Sandra Arifin; Suketi, Ketty
Journal of Tropical Crop Science Vol. 8 No. 02 (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.8.02.80-88

Bitter leaf (Vernonia amygdalina Del.) is a valuable functional vegetable and traditional medicinal plant in many tropical countries including Indonesia. Bitter leaf is commonly used to remedy hypertension and diabetes among Indonesian people. The leaf extract comprises bioactive compounds such as sesquiterpene lactones, steroid glycosides, and flavonoids. Despite its growing market demand, there is insufficient data on agronomic practice in order to obtain optimum yield with high bioactive compounds. The experimental design used was a randomized complete block design with two factors namely chicken manure rates (0, 2.5, 5, and 7.5 kg per plant) and harvest intervals (2 and 3 months). There was a significant difference in fresh and dry weights of leaves, chlorophyll a and b, carotenoids, nitrogen concentration, anthocyanins, and flavonoids among different manure treatment. The highest concentration and production of bioactive compounds on the bitter leaf was found on the highest treatment of 7.5 kg chicken manure per plant. The harvest interval of three months significantly increased fresh and dry weights of leaves, concentration of anthocyanins, phosphorus, and potassium, uptake of phosphorus and potassium, and production of anthocyanins and flavonoids. Cultivation using chicken manure with frequent period of pruning can enhance the production of biomass as well as secondary metabolites in bitter leaf.

Fruit Scar Incidence and Its Effect on Guava ‘Kristal’ Fruit Quality (Psidium guajava L.) at Low- and Middle-altitude Orchards in Bogor, Indonesia Musyarofah, Neni; Susanto, Slamet; Aziz, Sandra Arifin; Suketi, Ketty; Dadang, Dadang
Journal of Tropical Crop Science Vol. 8 No. 02 (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.8.02.101-109

Information on scar incidence and its effect on fruit quality of ‘Kristal’ guava (Psidium guajava L.) grown on different altitudes is currently limited. The aim of this study was to evaluate the fruit scar incidence and fruit quality of 'Kristal' guava var. grown on low- and middle-altitude orchards. The research was conducted by collecting 50 samples of fruit harvested from each orchard from January to June 2019. Fruit quality evaluation was carried out at Postharvest Laboratory, Department of the Agronomy and Horticulture, IPB University, whereas scarring pest observation was conducted at Insect Biosystematics Laboratory, Department of Plant Protection, IPB University. Our results showed that the low-altitude orchard produced more fruits with medium, high, and very high scar intensity, while the middle-altitude orchard produced more fruits with low and very low scar intensity. Fruit scar was caused by fruit scarring pests, especially thrips and mites. Fruit tissue damage only occurred on the epidermis of fruit pericarps where the tissue turned brownish and thickened. Additionally, there was no expansion of the damage into the pulp. The peel damage did not affect the fruit taste as indicated in the level of total soluble solids (TSS), titratable acidity (TA), TSS/TA ratio, vitamin C, and total flavonoids content. Fruit external quality was varied in response to altitude, where middle-altitude orchard produced a heavier, a bigger and a lower fruit softness than low-altitude ones. Present findings could be the baseline information for determine the best growth site and adjustment of pest control to maintain fruit quality.

Effects of Chitosan and 1-MCP on the Physical and Chemical Quality of Salak “Pondoh” (Salacca edulis REINW.) Fruits Susanti, Lea; Suketi, Ketty; Kurniawati, Ani; Setyadjit
Journal of Tropical Crop Science Vol. 11 No. 01 (2024): 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.11.01.39-48

Salak, or snake fruit, is a tropical fruit with a short shelf life when stored at room temperatures. The fruit’s base, if injured or bruised, can serve as an entry point for microbes, leading to physical and chemical damage to the fruits. This research aims to determine if chitosan and 1-methylcyclopropene (1-MCP) treatment can prolong the shelf life of salak “Pondoh”. The study tested two factors, chitosan (0%, 0.5%, 1.0%, 1.5%) and 1-MCP concentrations (0, 0.5, 1.0, 1.5 µL.L-1). The findings indicate that the application of chitosan and 1-MCP treatments did not significantly extend the shelf life of the fruits on the 15th day of observation. However, 1.0% chitosan combined with 1.5 µL.L-1 1-MCP and 1.5% chitosan combined with 0.5 µL.L-1 1-MCP proved effective in enhancing the fruit’s overall quality and maintained low ethylene production, high water content, and enhanced the organoleptic attributes including ease of peeling, fruit flesh color, texture, aroma, and taste.

Penampilan Pertumbuhan Jeruk Besar (Citrus grandis (L.) Osbeck) cv. Cikoneng pada Beberapa lnterstock Susanto, Slamet; Suketi, Ketty; Mukhlas, ,; Rachmawati, Lia
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 32 No. 2 (2004): Buletin Agronomi
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The purpose of the research was to study the growth performance of pummelo cv. Cikoneng grafted on several interstocks. Four interstock cultivars i.e. Flying Dragon (Poncirus trifoliata Var. Monstrosa), Troyer (Poncirus trifoliata x Citrus sinensis), Citrumelo (Citrus paradisi x Poncirus trifoliata) and Rangpur Lime (Citrus limonia Os beck x Troyer Citrange) weres ubjectedt o this experiment.A ll interstocksw ereg rafted on JapanscheC itroen rootstock.The experiment was arranged in a Randomized Block Design. All seedlings grew normal, no incompatibility symptom between scion and interstocks was observed. Rangpur Lime interstock tended to retard scion growth, inversely, Citrumelo interstock was the most promoted scion growth. Flying Dragon and Troyer had intermediate characteristic, their effect on scion growth was between Rangpur Lime andCitrumelo. Key words: Pummelo, Cikoneng, lnterstock

Karakter Fisik dan Kimia Buah Pepaya pada Stadia Kematangan Berbeda Suketi, Ketty; Poerwanto, Roedhy; Sujiprihati, Sriani; Sobir, ,; Widodo, Winarso Drajad
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 38 No. 1 (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 the experiment was to investigate the physical and chemical characteristics of three stadia of maturity based on a range of peel color from green to yellow or based on percentage of the yellow area of fruit peel (stadium 1 = 25-49 % yellow, stadium 2 = 50-74 % yellow, and stadium 3 = above 75 % yellow) on six genotypes of papaya. Each genotype exhibited different days to maturity for each stadium. The fruits of stadium 1, 2 and 3 for IPB 1 were picked at 130, 135, and 140 days after anthesis (DAA); IPB 10A at 160, 165, and 170 DAA; IPB 1 x PB 174 at 135, 140 and 145 DAA; while PB 174, IPB 1 x IPB 10A and IPB 10A x PB 174 were picked at 140, 145 and 150 DAA, respectively. The results indicated that peel firmness was affected by maturity stage on female fruit of IPB 10A. Maturity stage affected chemical characteristics of papaya included total soluble solids (TSS) content (IPB 10A, female fruit of PB 174, female fruit of IPB 1 x IPB 10A, and female fruit of IPB 1 x PB 174), vitamin C content (hermaphrodite fruit of 10 A, female fruit of IPB 1 x IPB 10A) and juice pH (hermaphrodite fruit of IPB 1). IPB 1 genotype can be harvested at all stadia of maturity stage. Hermaphrodite and female fruit of IPB 10 A, female fruit of PB 174, female fruit of IPB 1 x IPB 10A and female fruit of IPB 1 x PB 174 genotype would be better harvested at stadium 3 of maturity stage. Keywords: Carica papaya, papaya genotype, hermaphrodite fruit, female fruit, fruit quality, fruit maturity stage

Analisis Kedekatan Hubungan antar Genotipe Pepaya Berdasarkan Karakter Morfologi dan Buah Suketi, Ketty; Poerwanto, Roedhy; Sujiprihati, Sriani; Sobir, ,; Widodo, Winarso D.
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

Pollen Viability and Pollen Tube Growth of IPB’s Papaya Suketi, Ketty; Tuharea, Cenra Intan Hartuti; Widodo, Winarso Dradjad; Poerwanto, Roedhy
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 39 No. 1 (2011): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

The purpose of the research was to examine the pollen germination process and growth rate of pollen tubes of papaya. Pollen tube growth of nine genotypes of papaya (IPB 1, IPB 2, IPB 3, IPB 4, IPB 5, IPB 7, IPB 8, IPB 9, and IPB 10) was investigated in this experiment in order to study their pollen germination rate and pollen viability. The fresh pollen were excised from the fl owers of papaya grown at Tajur Field Station of Research Center for Tropical Fruit, Bogor Agricultural University (IPB), Bogor. The extracted pollen was cultured aseptically on the Brewbaker and Kwack medium (pH 7.3) at ambient temperature of 26-28 °C. Pollen germination and pollen tube growth was observed under optical microscope with 100 and 400 magnifi cation. Papaya pollen viability was not associated with size-based categories of papaya fruits. IPB 4 had the longest pollen tube at fi rst 30 minutes after germination (115.5 µm), whereas IPB 10 had the shortest (99.5 µm). The distance from stigma to ovary in hermaphrodite fl owers varies with genotypes, ranging from 7.38 to 13.44 mm. Average length of pollen tube within four hours of germination for small papaya fruit category (IPB 1, IPB 3, and IPB 4) was 1,030.67 ± 19.14 μm, while the distance between stigma and ovary was short (14.85 ± 2.19 mm) so that the expected of fertilization process occurred sooner. At the end of the experiment (four hours after germination), IPB 1 genotype had the longest pollen tube (1,052 µm) while IPB 9 genotype (913 µm) had the shortest pollen tube. Genotype with the highest percentage of germination at the end experiment was IPB 2 (65.65%), whereas the lowest was IPB 7 (42.56%).

Pemanfaatan Khamir Antagonis untuk Memperpanjang Umur Simpan dan Mengendalikan Penyakit Antraknosa Buah Pepaya Lestari, Mutiara Dwi; Suketi, Ketty; Widodo, Winarso Drajad; Wiyono, Suryo
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 48 No. 3 (2020): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Pepaya adalah buah klimakterik yang memiliki umur simpan pendek dan potensi gangguan penyakit antraknosa pada saat tahap pascapanen yang disebabkan oleh patogen Colletotrichum gloeosporioides. Tujuan dari penelitian ini adalah mengkaji keefektifan beberapa spesies khamir antagonis untuk memperpanjang umur simpan dan mengendalikan penyakit antraknosa pada pascapanen buah pepaya Callina. Penelitian ini dilaksanakan di kebun pepaya Desa Kanaga, Kabupaten Lebak, Banten pada November 2018 sampai Juli 2019 dan Laboratorium Pascapanen AGH, IPB pada bulan Maret sampai dengan Juli 2019. Penelitian ini menggunakan rancangan kelompok lengkap teracak dengan perlakuan lima jenis khamir yaitu Cryptococcus albidus Yp, Aureobasidium pullulans Dmg 30 DEP, Rhodotorula minuta Dmg 16 BEP, Candida tropicalis Lm 13 BE, dan Pseudozyma hubeiensis Dmg 18 BEP, dan sebagai pembanding perlakuan fungisida berbahan aktif azoksistrobin serta tanpa perlakuan sebagai kontrol. Hasil penelitian menunjukkan penggunaan khamir Candida tropicalis, Aureobasidium pullulans, dan Cryptococcus albidus dapat memperpanjang umur simpan buah pepaya Callina masing-masing 12.6, 12.4, dan 12.2 hari, lebih lama dibandingkan kontrol yang hanya 7 hari, dan efektif mengendalikan penyakit antraknosa dengan tingkat penekanan secara berturut-turut 58.33%, 54.17%, dan 50.00%, selama penyimpanan. Penggunaan khamir antagonis tidak mempengaruhi mutu fisik dan kimia buah pepaya Callina. Kata kunci: buah klimakterik, Colletotrichum gloeosporioides, pascapanen

Studi Degreening, Kesegaran, dan Daya Simpan Buah Naga Merah (Hylocereus polyrhizus (Weber) Britton & Rose) untuk Menentukan Kriteria Panen Optimum Suketi, Ketty; Widodo, Winarso Drajad; Maulida, Farah
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 48 No. 3 (2020): Jurnal Agronomi Indonesia
Publisher : Indonesia Society of Agronomy (PERAGI) and Department of Agronomy and Horticulture, Faculty of Agriculture, IPB University, Bogor, Indonesia

Buah naga merah adalah buah non klimakterik dengan lintasan fotosintesis crassulacean acid metabolism. Kematangan optimum ditandai dengan warna kulit buah merah 100%. Tujuan percobaan adalah mempelajari perubahan warna kulit terkait dengan kesegaran dan daya simpan buah naga merah untuk menentukan kriteria panen optimum. Bahan percobaan disiapkan di kebun Sabisa Farm, Sindang Barang, Bogor (60 35’ 16” LS, 1060 46’ BT; elevasi 219 m di atas permukaan laut). Percobaan menggunakan rancangan kelompok lengkap teracak dengan perlakuan 5 taraf umur panen, yaitu 30, 32, 34, 36, dan 38 hari setelah antesis (HSA) dengan 5 ulangan. Hasil percobaan menunjukkan bahwa kulit buah naga merah 30 HSA memiliki skala warna 2 (1-25% merah), buah 32 HSA memiliki skala warna 4 (26-50% merah), dan buah 34, 36, dan 38 HSA telah mencapai skala warna 6 (100% merah) ketika dipanen. Kulit buah 30 HSA memerlukan waktu 6 hari setelah panen (HSP) dan buah 32 HSA memerlukan waktu 3 HSP untuk mencapai warna merah 100%. Pada saat warna merah 100%, buah 30 - 38 HSA memiliki kandungan padatan terlarut total 11.7 hingga 13.5 oBrix yang masih memenuhi standard pemasaran buah naga sebesar 11.0 oBrix. Kandungan asam tertitrasi total menurun, tetapi kandungan vitamin C meningkat dengan meningkatnya umur panen. Kata kunci: CAM, kematangan pascapanen, kesegaran buah, satuan panas, tanaman hari-panjang

Co-Authors , Mukhlas Abdullah Bin Arif Aidil Fitriansyah Alveno, Vitho Anas Dinurrohman Susila Ani Kurniawati Arista, Mei Lianti Awang Maharijaya Azzuhdy, Muhammad Zakiyuddin Siroj betty betty Betty Tjhia Cenra Intan Hartuti Tuharea Chandi Tri Akbar DADANG DADANG Deli, Syekh Zulfadli Arofah Dhika Prita Hapsari Dian Pratanda Rizki Didy Sopandie Efendi, Darda Elke Camelia Halim Faqih Udin Farah Maulida Febjislami, Shalati Fidianinta , Fitria Andini Hamdani, Kiki Kusyaeri Imanda, Nandya Jamaluddin, Moh Agus Jian Ayu Pratiwi Juang G. Kartika Juang Gema Kartika Krisantini Krisantini , Krisantini Lestari, Mutiara Dwi Lia Rachmawati M. Luthfan Taris Mathias Pratama Mei Lianti Arista Moh Agus Jamaluddin Mohamad Rahmad Suhartanto Muhamad Noor Azizu, Muhamad Noor Muhamad Syukur Muhammad Syaifuddin Abdurrohim Mukdisari, Yurisqi Mustika Dwi Rahayu Muthi’ah Khairun Nisa Nadiyah Mawaddah Ayuningtyas Nandya Imanda Nasib, Samson Bin Natalia, Cristina Evi Neni Musyarofah Nian Rimayanti H. Nicha Muslimawati Nidya Putri Zulia Kusuma Wardani Nilam Mayasari Nur Asmah, Nur Nurkholis Nurkholis Purwono Purwono, Purwono Putra, Bagas Akmala Rahardjo, Rizky RAHMI YUNIANTI Rahmi Yunianti Rasmani, Rasmani Riana Jumawati Risna rusdan Rizki, Dian Pratanda Rizky Rahardjo Roedhy Poerwanto Samson Bin Nasib Sandra Arifin Aziz Septy Yurihastuti Setyadjit Shalati Febjislami Slamet Susanto Sobir Sobir Sriani Sujiprihati SRIANI SUJIPRIHATI Suryo Wiyono Susanti, Lea Susanto, Renaldy Tanari, Yulinda Turi Handayani Winarso D. Widodo Winarso Drajat Widodo Yurihastuti, Septy Yusnita Sari

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