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STUDI AKUMULASI PIGMEN β-CRYPTOXANTHIN UNTUK MEMBENTUK WARNA JINGGA BUAH JERUK DI DAERAH TROPIKA Sumiasih, Inanpi Hidayati; Arzam, Taruna Shafa; Poerwanto, Roedhy; Efendi, Darda; Agusta, Andria; Yuliani, Sri
Jurnal Hortikultura Indonesia Vol. 9 No. 2 (2018): 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 (934.285 KB) | DOI: 10.29244/jhi.9.2.73-83

Abstract

ABSTRACTDegreening is a transformation process on peel which enables it to change color from green to orange on citrus fruits. The orange color of the peel comes from the mixture of carotenoid pigments, such as ?-cryptoxanthin and ?-citraurin. The pigments contributed in the formation of ?-citraurin are ?-cryptoxanthin and zeaxanthin. The objectives of this study were (1) to obtain proper degreening temperature in the orange color formation of several citrus varieties, and (2) to identify and determine pigments of ?-cryptoxanthin pigment and total chlorophyll content in citrus peel after degreening. This study was conducted at PKHT IPB and LIPI Cibinong from July 2013 to December 2013, and from February 2016 to May 2017. About 100 ppm of ethylene gas was injected into a citrus-containing box using 5 ml syringe, then the box was placed in cool storage at 15 0C, 20 0C and room temperature, for 72 hours. The results showed that the best colors of Keprok Selayar and Keprok Tejakula were obtained by the degreening at 15 0C, in Siam Kintamani it was obtained by degreening at 20 0C. Degreening significantly reduced the total chlorophyll content, and increased ?-cryptoxanthin content. The content of ?-cryptoxanthin after degreening was 3 folds higher on highland Citrus reticulata than lowland citrus.Keywords: citrus color index, chlorophill, degreening, ethylene, tropical citrusABSTRAKDegreening adalah proses perombakan warna hijau pada kulit jeruk diikuti dengan proses pembentukan warna jingga. Warna jingga adalah campuran antara ?-cryptoxanthin dengan ?-citraurin. Pigmen yang berkontribusi dalam pembentukan ?-citraurin adalah ?-cryptoxanthin dan zeaxanthin. Tujuan penelitian ini ialah (1) Mendapatkan suhu degreening yang tepat dalam pembentukan warna jingga pada beberapa varietas jeruk, (2) Identifikasi dan penentuan kadar pigmen ?-cryptoxanthin dan kandungan total klorofil pada kulit jeruk setelah degreening. Penelitian ini dilakukan di PKHT IPB dan LIPI Cibinong pada bulan Juli 2013 sampai Desember 2013, dan bulan Februari 2016 sampai Mei 2017. Degreening dilakukan dengan menginjeksikan gas etilen konsentrasi 100 ppm ke dalam wadah tertutup yang berisi jeruk menggunakan syringe 5 ml, kemudian disimpan pada suhu 15 0C, 20 0C dan suhu ruang, selama 72 jam. Hasil penelitian menunjukkan bahwa warna terbaik jeruk Keprok Selayar dan Tejakula diperoleh dengan degreening pada suhu 15 0C, Siam Kintamani diperoleh dengan degreening pada suhu 20 0C. Degreening dapat menurunkan kandungan total klorofil secara tajam, dan terbukti meningkatkan kandungan pigmen ?-cryptoxanthin. Kandungan pigmen ?-cryptoxanthin setelah degreening 3 kali lebih tinggi pada jeruk keprok dataran tinggi dibandingkan dengan dataran rendah.Kata kunci: citrus color index, degreening, etilen, jeruk tropika, klorofil
APLIKASI KALSIUM DAN NAA UNTUK MENGENDALIKAN GETAH KUNING BUAH MANGGIS (GARCINIA MANGOSTANA L.) Tanari, Yulinda; Efendi, Darda; Poerwanto, Roedhy; Sopandie, Didy; Suketi, Ketty
Jurnal Hortikultura Indonesia Vol. 9 No. 1 (2018): 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 (207.793 KB) | DOI: 10.29244/jhi.9.1.10-18

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ABSTRACTThe yellow sap is produced naturally in mangosteen organ except in the root. The yellow sap contaminated the aryl and rind if the epithelial cell walls rupture due to deficiency of calcium (Ca). Calcium is one of structural component of cell walls, whereas naphthaleneacetic acid (NAA) has its role in improving cell division and cell elongation. Interaction of Ca and NAA can improve sink strength and capacity because the newly formed cells need Ca to construct wall structure. This experiment aimed at finding out the effect of Ca and NAA applications in reducing the contamination of yellow sap in mangosteen. The experiment was conducted by using factorial random block design consisting of 2 factors and 3 replications. The first factor was Ca dosage (0 and 4.8 kg/tree), and the second factor was NAA concentration (0, 200, 400 and 600 ppm). The results showed that application of 4.8 Ca/tree and 200 ppm NAA as much as 5 ml / fruit effectively improve the content of Ca pectate in pericarp, reduced the percentage of yellow sap contamination on the fruit segment, aryl and rind to 0% and 12.3% respectively compared to control (17.8% on fruit segment, 36.8% on aryl and 56.1% on rind).Key words: aryl, Ca pectate, cell wall, middle lamela.ABSTRAKGetah kuning adalah getah yang dihasilkan secara alami pada setiap organ manggis, kecuali pada akar. Getah kuning akan keluar dan mencemari aril serta kulit jika dinding sel epitel pecah karena kekurangan kalsium (Ca). Kalsium adalah komponen dinding sel, berperan dalam struktur dan permeabilitas membran sedangkan asam naftalenasetat (NAA) berperan penting dalam meningkatkan pembelahan dan pembesaran sel. Interaksi keduanya dapat meningkatkan kapasitas sink buah karena sel yang baru terbentuk membutuhkan Ca dalam menyusun struktur dinding sel. Percobaan bertujuan untuk mengetahui pengaruh aplikasi Ca dan NAA dalam menurunkan cemaran getah kuning manggis. Percobaan menggunakan rancangan acak kelompok faktorial 2 faktor dengan 3 ulangan. Faktor ke-1 yaitu dosis Ca (0 dan 4.8 kg Ca/pohon) dan faktor ke-2 yaitu konsentrasi NAA (0, 200, 400 dan 600 ppm) dengan volume semprot 5 ml perbuah. Hasil percobaan menunjukkan bahwa aplikasi 4.8 kg Ca/pohon dengan NAA 200 ppm sebanyak 5 ml/buah efektif meningkatkan kandungan Ca pektat perikarp dan menurunkan persentase buah tercemar getah kuning menjadi 0% pada juring dan aril serta 12.3% pada kulit dibandingkan dengan perlakuan kontrol (17.8% pada juring, 36.8% pada aril dan 56.1% pada kulit buah).Kata kunci: aril, Ca pektat, dinding sel, lamela tengah
APLIKASI ETHEPON DAN LILIN LEBAH DALAM UPAYA DEGREENING DAN PERPANJANGAN UMUR SIMPAN BUAH JERUK KEPROK GARUT (CITRUS RETICULATA L.) Gautama, Yande Artha; Efendi, Darda; Matra , Deden Derajat
Buletin Agrohorti Vol. 7 No. 3 (2019): Buletin Agrohorti
Publisher : Departemen Agronomi dan Hortikultura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/agrob.v7i3.30193

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Jeruk keprok garut (Citrus reticulata L.) merupakan jeruk yang memiliki warna kulit buah hijau kekuningan pada saat matang fisiologis. Teknologi degreening dengan menggunakan ethepon dapat meningkatkan kualitas warna jingga kulit jeruk tropika. Degreening merupakan proses perombakan pigmen klorofil sekaligus biosintesis karotenoid pada kulit jeruk dengan perlakuan tertentu. Pembentukan warna jingga kulit jeruk merupakan kombinasi antara ?-citraurin dan ?-cryptoxanthin. Selain teknologi degreening untuk membentuk warna jingga pada kulit jeruk, teknologi pascapanen untuk memperpanjang umur simpan jeruk yaitu pelilinan dengan lilin lebah. Penelitian ini bertujuan mengamati pengaruh konsentrasi larutan ethepon terhadap kecepatan degreening dan konsentrasi lilin lebah terhadap daya simpan jeruk keprok garut. Penelitian dilaksanakan pada bulan Januari sampai Februari 2018 di Laboratorium Pusat Kajian Hortikultura Tropika IPB. Penelitian ini menggunakan rancangan kelompok lengkap teracak (RKLT) faktorial dua faktor. Faktor pertama adalah perlakuan ethepon (0 ppm dan 1 000 ppm), faktor kedua adalah perlakuan lilin lebah (0%, 6% dan 9%). Hasil penelitian menunjukkan bahwa ethepon 1 000 ppm memberikan pengaruh tidak berbeda nyata dapat membentuk warna jingga kekuningan (nilai CCI sebesar 5.91) pada kulit jeruk keprok garut pada 28 HSP. Pelapisan lilin lebah 9% yang dikombinasikan dengan ethepon 0 ppm menghasilkan susut bobot terendah pada akhir penyimpanan.
WAKTU DAN DOSIS APLIKASI KALSIUM DAN BORON UNTUK PENGENDALIAN GETAH KUNING PADA BUAH MANGGIS (GARCINIA MANGOSTANA L.) DI TIGA SENTRA PRODUKSI Kurniawan, Vandra; Poerwanto, Roedhy; Efendi, Darda
Jurnal Hortikultura Indonesia Vol. 7 No. 1 (2016): 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 (227.506 KB) | DOI: 10.29244/jhi.7.1.21-30

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ABSTRACTContamination of yellow sap (GK) in the mangosteen fruit leads to low quality of the mangosteen fruit. GK contamination occurs because the cell walls of the fruit is weak due to lack of calcium (Ca) and boron (B). Ca and B plays a role in maintaining the integrity of the cell wall. The study aimed to get the best treatment of dose and the time of application of Ca and B in controlling the contamination of GK on the aryl and mangosteen pericarp. This study used a nested design with 3 factors. First factor was study site, consisting of Cigudeg, Citeureup and Cikembar. The second factor was combination dose of fertilizer, consisting of control (without Ca + B), 1.6 kg Ca tree-1 + 1.553 g B tree-1, and 3.2 kg of Ca tree-1 + 1.553 g B tree-1. The third factor was time of fertilizer application, consisting of anthesis, stadia 1, and anthesis + stadia 1of fruit development. Result of the study showed that location which produced the best fruit was Cikembar where GK on aryl was 22.49% and on pericarp was 29.51%. A dose of 1.6 kg Ca tree-1 + 1.55 g B tree-1 and 3.2 kg Ca tree- 1 + 1.55 g B tree-1 were equally well in reducing GK contamination In aryl (19.91%) and pericarp (28.86%) compared to treatment without Ca and B which showed percentage of GK contaminated fruit on aryl was 50.00% and on pericarp was 56.46%. Ca and B application time was the best at stage 1, which lowered the percentage of GK contamination in aryl (40.44%) and pericarp (27.10%). Ca and B did not affect the physicochemical qualities including diameter, weight, hardness, total soluble solid, total titratable acidity of mangosteen fruit in three study sites.Keywords: fertilization, immobile nutrient, cell wall, pericarp, yellow sap.ABSTRAKCemaran getah kuning (GK) pada buah manggis menyebabkan rendahnya mutu buah manggis. Cemaran GK terjadi karena dinding sel buah lemah akibat kekurangan unsur kalsium (Ca) dan boron (B). Ca dan B berperan dalam menjaga integritas dinding sel. Penelitian bertujuan untuk mendapatkan dosis dan waktu aplikasi Ca dan B yang terbaik dalam mengendalikan cemaran GK pada aril dan kulit buah manggis. Penelitian ini menggunakan Rancangan Tersarang (Nested Design) 3 faktor. Faktor ke-1 adalah lokasi penelitian, terdiri dari Cigudeg, Citeureup dan Cikembar. Faktor ke-2 adalah kombinasi dosis pupuk yaitu kontrol (tanpa Ca + B), 1.6 kg Ca pohon-1 + 1.553 g B pohon-1, dan 3.2 kg Ca pohon-1 + 1.553 g B pohon-1. Faktor ke-3 adalah waktu aplikasi pupuk yaitu pada saar antesis, Stadia 1, dan Antesis + Stadia 1 dari perkembangan buah. Hasil penelitian menunjukkan bahwa lokasi penelitian dengan kualitas fisik buah terbaik adalah di Cikembar dengan persentase cemaran GK pada aril (22.49%) dan kulit (29.51%). Dosis 1.6 kg Ca pohon-1 + 1.55 g B pohon-1 dan 3.2 kg Ca pohon-1 + 1.55 g B pohon-1 sama baiknya dalam menurunkan cemaran GK di aril (19.91%) dan di kulit (28.86%) dibandingkan dengan perlakuan tanpa Ca dan B menunjukkan persentase buah tercemar GK pada aril (50.00%) dan kulit (56.46%). Waktu aplikasi Ca dan B yang terbaik adalah pada stadia 1 yang menurunkan persentase cemaran GK di aril (40.44%) dan kulit (27.10%). Ca dan B tidak mempengaruhi kualitas fisikokimia yang mencakup diameter, bobot, kekerasan, padatan terlarut total, asam tertitrasi total buah manggis di tiga lokasi penelitian.Kata kunci: pemupukan, hara tidak mobil, dinding sel, pericap, getah kuning.
A Review of Root Pruning to Regulate Citrus Growth Budiarto, Rahmat; Poerwanto, Roedhy; Santosa, Edi; Efendi, Darda
Journal of Tropical Crop Science Vol 6 No 01 (2019): Journal of Tropical Crop Science
Publisher : Journal of Tropical Crop Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (462.852 KB)

Abstract

Root is the important plant organ hiding below the soil that serves as plant supporting structure, water and nutrient supplier and assimilates storage. Root growth occurs in turn with shoot part, forming repeated cyclic pattern because of the photosynthate competition. Root growth regulation is one of the promising practices to boost the yield of fruit tree, especially citrus that is economically important and highly demanded fruit. Root pruning varied based on the scale of intensity and plant growth stage, including air root pruning, knife root pruning and modern pruning using root pruner machine mounted to a tractor. Root pruning to induce the growth of more fi brous root system and to correct root deformation at seedling stage have potentials to improve post-transplant growth. Besides, it has a potential to replace the use of chemical plant growth regulator for a more environmentally friendly practice. The pruning of root impeded the canopy growth, altered the plant water status leading to fl ower promotion. In addition, it is also a promising practice to overcome the alternate bearing on fruit tree, including citrus, through the suppressing of excessive growth and restricting the high fruit load during the ‘on year’ and allowing a better carbohydrate storage for the improvement of yield during the ‘off year’.
ANALISIS GENETIK SIFAT KETAHANAN MELON (CUCUMIS MELO L.) TERHADAP VIRUS KUNING Hermawan, Entit; ,, Sobir; Efendi, Darda
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 42 No. 2 (2014): 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 (410.511 KB) | DOI: 10.24831/jai.v42i2.8823

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ABSTRACTResistance to yellow virus (YV) is an important breeding trait in melon. However information regarding genetic inheritance pattern of the character are limited. This study aimed to provide information on genetic control for resistance to YV in melon caused by Tomato Yellow Leaf Curl Virus (TYLCV). Twenty genotypes from three major melon groups (dudaim, cantaloupe, and inodorous) were evaluated using controlled inoculation method. The results revealed that one line, MEV1 from the dudaim group, showed high resistance to YV; while other lines belong to cantaloupe and indororus indicated as highly susceptible lines. Screening of the F1 from crossing between resistant and susceptible parents resulted in resistant F1 after inoculation and planted in endemic location. Subsequently, evaluation on F2 population revealed a non-normal distribution for disease severity score, indicating that resistance to YV in melon was controlled by major genes. Chi-square (?2) test resulted in 13:3 ratio and indicated that the resistance to YV was controlled by 2 genes pair with dominant and epistasis recessive actions.Keywords: dominant and epstasis recessive action, major gene, Bemicia tabaci, Begomovirus
THE USE OF BEE WAX, CHITOSAN AND BAP TO PROLONG SHELFLIFE OF MANGOSTEEN (GARCINIA MANGOSTANA L.) FRUIT Efendi, Darda; Hermawati, Heliyana
Jurnal Hortikultura Indonesia Vol. 1 No. 1 (2010): 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 (1336.388 KB) | DOI: 10.29244/jhi.1.1.32-39

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ABSTRACTThe objective of this research was to determine the effect of coating materials and BAP concentration on inhibition of ripening process of mangosteen. The experiment used factorial completely randomized design with two factors, and three replication s. Coating materials as the first factor consisted of control (without coating) , bee wax 6%, and chitosan 2%. The second factor was concentration of Benzil Amino Purine (BAP), with 0, 5, 10, 15, and 20 ppm. Non destructive observations were weight loss, diameter decrease, peel and calyx color development. While, destructive observations were fruit hardness, total soluble solid (TSS), total titratable acidity (TTA) and opened ability. The result showed that bee wax was effective to inhibit weight loss. Interaction of bee wax and BAP 20 ppm inhibited peel and calyx color changes during storage.Key word: coating material, cytokinin, benzil amino purine, calyx, storage
KERAGAMAN MORFOLOGI DAN KOMPONEN HASIL KUBIS BUNGA (BRASSICA OLERACEA VAR. BOTRYTIS L.) DI DATARAN TINGGI DAN DATARAN RENDAH Haryanti, Dyra; Efendi, Darda; Sobir
Jurnal Agronomi Indonesia (Indonesian Journal of Agronomy) Vol. 47 No. 3 (2019): 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 (327.718 KB) | DOI: 10.24831/jai.v47i3.25902

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Increasingly limited land in the high elevation and increasing of global temperature needed breeding of cauliflower plants originating from temperate regions to be adaptively planted in low elevation. This study aimed to identify the morphological variability and yield component of cauliflower planted in the high elevation and low elevation. The experiment was conducted in Pasir Sarongge (1,117 m asl) and Tajur II (340 m asl) from June to December 2016. This experiment was conducted with a randomized complete block design single-factor (12 genotypes of cauliflower) with three replications. The results showed that BOB 021 genotype was not flowering in Tajur. Qualitative characteristics that are stable in two locations include leaf attitude, leaf color, curd color, leaf lobing, and curd covering by inner leaves. Vegetative characters and yields in low elevation were higher than high elevation, time of flowering and harvesting in high elevation was earlier than in low elevation. Based on the correlation analysis, an increase in the yield characters can be seen from the increase in vegetative character and increase in longevity time of flowering and harvesting. Keywords: correlation, flowering, qualitative, quantitative
DEHIDRASI DAN PEMBEKUAN JARINGAN APEKS TEBU UNTUK PENYIMPANAN JANGKA PANJANG ROOSTIKA, IKA; DEWI LIMA WATI, RARA PUSPITA; EFENDI, DARDA
853-8212
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar

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ABSTRAKTebu (Saccharum officinarum L.) merupakan tanaman yangdiperbanyak secara vegetatif. Kriopreservasi merupakan metode yangpaling sesuai untuk penyimpanan jangka panjang bagi tanaman yangdiperbanyak secara vegetatif. Dehidrasi dan pembekuan jaringan merupa-kan tahapan paling kritis yang menentukan keberhasilan kriopreservasi.Tujuan penelitian adalah untuk memperoleh durasi dehidrasi yang optimaldan metode pembekuan jaringan apeks tebu. Penelitian dilakukan diLaboratorium Kultur Jaringan, Kelompok Peneliti Biologi Sel danJaringan, Balai Penelitian dan Pengembangan Bioteknologi dan Sumber-daya Genetik Pertanian, Bogor pada Mei 2013 sampai Februari 2014.Untuk optimasi metode dehidrasi, apeks direndam dalam larutan PVS2(MS + gliserol 30% + etilen glikol 15% + dimetil sulfoksida 15% +sukrosa 0,4 M) selama 10, 20, 30, dan 40 menit. Untuk optimasi metodepembekuan, diujikan kombinasi perlakuan prakultur (dengan sukrosa 0;0,1; dan 0,3 M selama 5 hari) dan pemuatan dalam larutan LS (MS +gliserol 2 M + sukrosa 0,4 M) selama 0, 10, 20, dan 30 menit sebelumtahapan dehidrasi dan pembekuan jaringan di dalam nitrogen cair (-196 o C). Hasil penelitian menunjukkan durasi dehidrasi jaringan yangterbaik adalah 30 menit dalam larutan PVS2. Kombinasi perlakuanprakultur dengan sukrosa 0,3 M dan pemuatan dengan larutan LS selama10 menit merupakan metode terbaik untuk pembekuan jaringan. Persentasetumbuh sebelum dan setelah pembekuan dalam nitrogen cair berturut-turutadalah 100 dan 40%. Setelah kriopreservasi, biakan mampu tumbuhdengan tingkat multiplikasi tunas sekitar 10 tunas/eksplan. Metode yangdiperoleh pada penelitian ini berpeluang diterapkan untuk penyimpananplasma nutfah tebu dalam jangka panjang secara kriopreservasi daneliminasi patogen obligat secara krioterapi.Kata kunci: Saccharum officinarum L., apeks, dehidrasi, pembekuan,nitrogen cairABSTRACTSugarcane (Saccharum officinarum L.) is vegetatively propagatedplant. Cryopreservation is the most suitable method for long-termpreservation of vegetatively propagated plant. Dehydration and freezingare critical steps of successful cryopreservation so that it should beoptimized. The research aimed to obtain the optimal duration ofdehydration and freezing method of sugarcane apex tissues. Theexperiments were conducted at Tissue Culture Laboratory, Plant CellTissue Biology Group, Indonesian Center for Agricultural Biotechnologyand  Genetic  Resources  Research  and  Development  on  May2013−February 2014. To optimize dehydration method, the tissues wereexposured in PVS2 solution (MS + 30% glycerol + 15% ethylene glycol +15% dimethyl sulphoxide + 0.4 M sucrose) for 10, 20, 30, and 40 minutes.To optimize freezing method, the combined treatment of preculture withsucrose (0, 0.1, dan 0.3 M) for 5 days and loading in LS solution (MS + 2M glycerol + 0.4 M sucrose) for 0, 10, 20, dan 30 minutes) were testedbefore dehydration for 30 minutes and freezing in liquid nitrogen (-196 o C).The best duration of dehydration was 30 minutes. The combined treatmentof preculture on 0.3 M sucrose and loading for 10 minutes was the bestmethod for tissues freezing. Percentage of regrowth before and afterfreezing in liquid nitrogen was 100 and 40% respectively. Aftercryopreservation, the cultures could grow with high shoot multiplicationrate about 10 shoots/explant. The method resulted in this study can beapplied for long-term storage of sugarcane germplasms by cryopreser-vation and (elimination of obligate pathogens by cryotherapy.Keywords: Saccharum officinarum L., apex, dehydration, freezing, liquidnitrogen.
PENGARUH UMUR PANEN DAN SUHU SIMPAN TERHADAP UMUR SIMPAN BUAH NAGA SUPER RED (HYLOCEREUS COSTARICENSIS) Istianingsih, Tri; Efendi, Darda
Jurnal Hortikultura Indonesia Vol. 4 No. 1 (2013): 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 (269.339 KB) | DOI: 10.29244/jhi.4.1.54-61

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ABSTRACTSuper red-fleshed dragon fruit is  newer than white or red-fleshed dragon fruit. The aims of this research was  to  study  the  effect  of  interaction  between fruit  age  at  harvest  (day  after  anthesis;  DAA)  and  storage temperature on  fruit  quality  and  shelf  life  of  Super  Red-fleshed  dragon  fruit (Hylocereus  costaricensis).  This research was conducted at postharvest laboratory of Bogor Agricultural University from January to March 2010.Fruits were harvested from commercial orchard at Sentul, Bogor. The experiment was arranged in a  randomizedblock design with two factors, fruit age (33,  35,   and 37  Days After Anthesis (DAA)) and storage temperature (15 0C  and  room temperature).  There  were  highly  signif icant  interaction  between  fruit  age and  storage temperature on cumulative weight losses, freshness,  and  peel firmness in first week. Harvesting at 35 DAA is recommended  because  the fruits  have  better  freshness  level,  homogeneous  fruit  color,  and  high soluble  solid content. Cool storage at 15 ºC kept the fruit quality better for 2 weeks than fruit stored at room temperature .Key words:  cool storage,  fruit freshness, fruit quality ,  harvest date,   soluble solid contentABSTRAKBuah naga Super Red  merupakan jenis buah naga yang baru dibandingkan buah naga daging putih dan merah. Tujuan dari penelitian ini adalah untuk mempelajari pengaruh interaksi umur buah saat dipanen dan suhupenyimpanan terhadap kualitas buah dan daya simpan buah naga Super- red (Hylocereus costaricensis). Penelitian ini  dilakukan  di  laboratorium  pasca  panen,  Institut Pertanian  Bogor,  pada  Januari  hingga  Maret  2010, menggunakan buah dari kebun buah komersial di Sentul, Bogor. Percobaan  dilakukan menggunakan rancangan kelompok teracak dengan dua faktor, yaitu umur panen buah (33, 35, dan 37 Hari Setelah Anthesis (HSA)) dan suhu penyimpanan (15 oC dan suhu ruangan). Terdapat interaksi yang sangat signifikan antara umur panen buah dan  suhu ruang penyimpanan dengan  kehilangan  hasil kumulatif, kesegaran, dan  kekerasan. Pemanenan pada 35  HSA  direkomendasikan karena  buah  memiliki  kesegaran  yang  lebih  baik,  keseragaman  warna buah,  dan padatan terlarut total yang tinggi. Penyimpanan dingin pada 15 oC juga menjaga kualitas buah selama dua minggu lebih baik dibandingkan buah yang disimpan pada suhu ruangan.Kata kunci: hari pemanenan, kesegaran buah, kualitas buah, padatan terlarut total,  penyimpanan dingin