scholarly journals Parasitism of Meloidogyne exigua races 1 and 2 in coffee plants derived from Timor Hybrid

2021 ◽  
Vol 51 (7) ◽  
Author(s):  
Antonio Alves Pereira ◽  
Larissa de Brito Caixeta ◽  
Bárbhara Joana dos Reis Fatobene ◽  
Claudio Marcelo Gonçalves Oliveira ◽  
Wallace Gonçalves ◽  
...  
Keyword(s):  
Coffea Arabica ◽  
Arabica Coffee ◽  
Close Relationship ◽  
Mother Plants ◽  
Coffee Plants ◽  
Gall Index ◽  
Two Populations ◽  
Reproduction Factor

ABSTRACT: To investigate the degree of parasitism of two populations of Meloidogyne exigua, the gall index (GI) and the reproduction factor (RF) of M. exigua races 1 (Est E2) and 2 (Est E1) were analyzed in 47 progenies on F3:4 or F4:5 generation derived from the crossing between Coffea arabica cv. Catuaí Amarelo and Timor Hybrid. C. canephora cv. Apoatã IAC 2258 and C. arabica cv. Catuaí Vermelho IAC 144 were used as resistance and susceptibility checks, respectively. The genotypes that were classified as resistant or susceptible by RF were similarly classified by GI, showing a close relationship between both methodologies. The data also indicated no differences in virulence between the nematode populations, since the progenies showed similar resistance reactions to the M. exigua races 1 and 2. According to GI from the 47 mother plants evaluated, 27 progenies (57.4%) were classified as resistant to M. exigua races 1 and 2, with GI ranging from 0.0 to 1.4 and 20 progenies (42.6%) were susceptible with GI from 2.6 to 4.4. These results showed that most of the evaluated germplasm was very promising in relation to the development of new Arabica coffee cultivars with resistance to M. exigua.

scholarly journals Resistance to nematode Meloidogyne paranaensis in Arabica coffee genotypes introgressed with Coffea liberica

2020 ◽  
pp. 1236-1241
Author(s):  
Gustavo H. Sera ◽  
Filipe G. Carvalho ◽  
Inês C. de B. Fonseca ◽  
Luciana H. Shigueoka ◽  
Santino A. da Silva ◽  
...  
Keyword(s):  
Germplasm Bank ◽  
Breeding Programs ◽  
Arabica Coffee ◽  
Randomized Design ◽  
Mother Plants ◽  
Completely Randomized Design ◽  
Set Up ◽  
Moderately Resistant ◽  
Reproduction Factor ◽  
Coffea Liberica

The aim of this study was to prove that Arabica coffee introgressed with C. liberica, have resistance to Meloidogyne paranaensis (Mp). Open pollinated fruits were harvested from mother plants of 29 Arabica coffee genotypes from the IAPAR germplasm bank. Seeds were collected from the fruits and were sown to obtain seedlings to test the resistance to Mp. The experiment was set up in a completely randomized design with 29 coffee genotypes, 8 replications, and one plant per plot. Cultivars Catuaí Vermelho IAC 99 and IPR 100 were used as susceptible and resistant checks, respectively. Seedlings with three to four pairs of leaves were inoculated with 1,400 eggs and juveniles J2 of Mp (IP). At 120 days after inoculation, seedlings were evaluated by counting the nematodes per gram of roots, and the final nematodes population was obtained (FP). The reproduction factor (RF) was calculated using the formula: RF = FP/IP. The reproduction factor reduction was used to classify the resistance levels of genotypes, which were classified as highly resistant (HR), resistant (R), moderately resistant (MR), moderately susceptible (MS), susceptible (S) an highly susceptible (HS). All genotypes differed from Catuaí in resistance factor (RF), five of which did not differ from IPR 100 for RF, and only the line IAPAR 15242 had RF < 1.0. Out of 28 Arabica genotypes introgressed with C. liberica, five HR, 11 R, 11 MR and one MS were identified. However, only IAPAR 15242 and IPR 100 were classified as HR and presented 100% of HR plants, but only the first showed an RF < 1.0. Results revealed that these Arabica coffee genotypes with introgression of C. liberica genes have great potential to be used in breeding programs and they are a new alternative as a source of resistance.

scholarly journals Evaluasi Kesesuaian Lahan pada Tanaman Kopi Arabika (Coffea arabica L.) Organik Menggunakan Sistem Informasi Geografis (SIG) di Kecamatan Pegasing Kabupaten Aceh Tengah

2019 ◽  
Vol 4 (2) ◽  
pp. 329-338
Author(s):  
Ghalib Auliansyah ◽  
Fachruddin Fachruddin ◽  
Yuswar Yunus
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Water Availability ◽  
Coffea Arabica ◽  
Land Suitability ◽  
Limiting Factor ◽  
Arabica Coffee ◽  
The People ◽  
Coffee Plants ◽  
Coffea Arabica L

Abstrak.  Komoditas kopi identik dengan kehidupan masyarakat Aceh Tengah, karena sebagian besar penduduk di wilayah dataran tinggi ini menggantungkan hidupnya dari komoditas kopi. Evaluasi kesesuaian lahan pada tanaman kopi Arabika organik sangat penting untuk mengoptimalkan produktivitas tanaman tersebut. Hasil penelitian menunjukkan kelas kesesuaian lahan aktual di Kecamatan Pegasing dengan analisis lahan seluas 7.800,69 ha adalah sangat sesuai (S1) seluas 2.851,28 ha (36,55%), cukup sesuai (S2) 3.616,56 ha (46,36%) dan tidak sesuai (N) seluas 1.332,85 ha (18,72%) dengan faktor pembatas terberat ketersediaan air (wa) pada semua SPL, resistensi hara (nr) pada SPL 1, 3 dan 4 serta kemiringan lereng pada semua SPL.Evaluation of Land Suitability on Organic Arabica  Coffee Plants (Coffea arabica L.) Using Geographic Information Systems (GIS) in Pegasing District Middle of Aceh RegencyAbstract. Coffee commodities are identical to the life of the people of Middle Aceh, because most of the population in this highland region depends on the commodity of coffee. Evaluation of land suitability in organic Arabica coffee plants is very important to optimize the productivity of these crops. The results showed the actual land suitability class in Pegasing District with an analysis of an area of 7,800.69 ha was very suitable (S1) covering an area of 2.851,28 ha (36,55%), quite suitable (S2) 3.616,56 ha (46,36%) and incompatible (N) covering an area of 1,332.85 ha (18.72%) with the heaviest limiting factor of water availability (wa) in all SPL, nutrient resistance (nr) in SPL 1, 3 and 4 and slope slope in all SPL.

Decline of Pratylenchus coffeae and Radopholus arabocoffeae populations after death and removal of 5-year-old arabica coffee (Coffea arabica cv. Catimor) trees

Nematology ◽  
2011 ◽  
Vol 13 (4) ◽  
pp. 491-500 ◽  
Author(s):  
Chau Nguyen ◽  
Maurice Moens ◽  
Wim Wesemael ◽  
Phap Trinh
Keyword(s):  
Coffea Arabica ◽  
Nematode Species ◽  
Soil Samples ◽  
Control Measures ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Arabica Coffee ◽  
Soil Layers ◽  
Pratylenchus Coffeae ◽  
Coffee Plants

AbstractThe decline of populations of the plant-parasitic nematodes Radopholus arabocoffeae and Pratylenchus coffeae was studied after the death and removal of severely damaged coffee plants (Coffea arabica cv. Catimor) in a field naturally infested with both nematodes. Soil samples were taken at monthly intervals up to a depth of 70 cm and divided into 10 cm segments from which nematodes were extracted. The numbers of R. arabocoffeae and P. coffeae in soil and in root fragments were determined. Both species were found up to 70 cm depth. Densities of R. arabocoffeae and P. coffeae populations declined exponentially over time in all soil layers. No nematodes were found in soil and root fragments 10 and 11 months after removal of the infected coffee plants for R. arabocoffeae and P. coffeae, respectively. Arabica coffee seedlings were planted in soil collected from the experimental plots after these time periods. The seedlings were grown for 3 months in a glasshouse and then roots and soil were analysed for presence of both nematode species. No R. arabocoffeae and P. coffeae were found, confirming that the population in the field had completely declined. The results of this experiment demonstrate that a replant of coffee is possible 1 year after removal of infected plants from a plantation without any further (chemical) control measures.

scholarly journals Arabica coffee accessions originated from Ethiopia with resistance to nematode Meloidogyne paranaensis

2020 ◽  
pp. 1209-1213
Author(s):  
Melina Marques Holderbaum ◽  
Dhalton Shiguer Ito ◽  
Débora Cristina Santiago ◽  
Luciana Harumi Shigueoka ◽  
Lucas Eduardo Fernandes ◽  
...  
Keyword(s):  
Coffea Arabica ◽  
Germplasm Bank ◽  
Heterozygous Condition ◽  
Arabica Coffee ◽  
Final Population ◽  
Randomized Design ◽  
Susceptible Control ◽  
Completely Randomized Design ◽  
Reproduction Factor

The aim of this study was to evaluate the resistance of Ethiopian Coffea arabica from IAPAR’s germplasm bank to Meloidogyne paranaensis. Two experiments were carried out in a greenhouse in IAPAR, Londrina, Paraná State, Brazil. A completely randomized design was used with 15 treatments, eight replications and one plant per plot. 14 accessions of C. arabica from Ethiopia were evaluated and the cultivar Mundo Novo IAC 376-4 was used as a susceptible control. Seedlings with three to four pairs of leaves were transplanted into plastic cups with a capacity of 700 mL and 1200 eggs and/or J2 of M. paranaensis (IP) were inoculated after one month. The evaluations were performed 130 days after inoculation, when the data of the number of eggs and J2 per gram of roots, the final population of nematodes (FP) were obtained and the reproduction factor (RF) was calculated using the formula: RF = IP / FP. To classify the resistance levels of the genotypes, the reduction of the reproduction factor (RRF) was used. The Ethiopian accessions were classified from highly resistant to highly susceptible. Most of the Ethiopian coffees were highly resistant to M. paranaensis. The genotype Geisha also showed resistance, but is still in heterozygous condition.

scholarly journals Coffea arabica cultivars with resistance to nematode Meloidogyne exigua originated from Costa Rica

2020 ◽  
pp. 1-6
Author(s):  
Mainor Rojas Barrantes ◽  
Daniel Ramírez Valerio ◽  
Luis Salazar Figueroa ◽  
Tumoru Sera ◽  
Gustavo Hiroshi Sera
Keyword(s):  
Costa Rica ◽  
Coffea Arabica ◽  
Block Design ◽  
Coffee Plantations ◽  
Randomized Complete Block Design ◽  
Gall Index ◽  
Great Possibility ◽  
Almost All ◽  
Reproduction Factor

The nematode Meloidogyne exigua causes moderate losses in almost all coffee plantations in Costa Rica. The objective of this research was to evaluate the resistance of Coffea arabica cultivars developed in Brazil to M. exigua native from Costa Rica. The trial was carried out in Heredia, Costa Rica. A randomized complete block design with five replications was used to evaluate the cultivars Caturra, Catuaí Vermelho IAC 99, IAPAR 59, IPR 98, IPR 99, IPR 100, IPR 102, IPR 103, IPR 106 and IPR 107. The plants were grown in pots and inoculated with 2500 eggs + J2 117 d after the transplant. The evaluation was performed 209 d after the inoculation considering the number of eggs + J2 in 100 g of roots and the estimation of gall index (GI) of each plant. The reduction in the reproduction factor showed resistance for the cultivars IPR 99, IPR 100, IPR 102, IPR 103 and IPR 107. This represents a great possibility to face M. exigua of Costa Rica in a sustainable way with varieties developed in Brazil.

scholarly journals Selection of coffee progenies for resistance to nematode Meloidogyne paranaensis in infested area

2014 ◽  
Vol 14 (2) ◽  
pp. 94-101 ◽  
Author(s):  
Sonia Maria Lima Salgado ◽  
Juliana Costa de Rezende ◽  
José Airton Rodrigues Nunes
Keyword(s):  
Genetic Variability ◽  
Coffea Arabica ◽  
Mixed Model ◽  
High Rate ◽  
Germplasm Bank ◽  
Genotypic Association ◽  
Coffee Plants ◽  
Plagiotropic Branches ◽  
Mixed Model Methodology ◽  
Selection Of

The purpose of this study was to select Coffea arabica progenies for resistance to M. paranaensis in an infested coffee growing area using Henderson's mixed model methodology. Forty-one genotypes were selected at the Coffee Active Germplasm Bank of Minas Gerais, and evaluated in regard to stem diameter, number of plagiotropic branches, reaction to the nematode, and yield per plant. There was genetic variability among the genotypes studied for all the traits evaluated, and among the populations studied for yield and reaction to the nematode, indicating possibilities for obtaining genetic gains through selection in this population. There was high rate of genotypic association between all the traits studied. Coffee plants of Timor Hybrid UFV408-01 population, and F3 progenies derived from crossing Catuaí Vermelho and Amphillo MR 2161 were the most promising in the area infested by M. paranaensis.

scholarly journals The effect of auxin 2,4-D and cytokinin 2-ip on direct somatic embryogenesis formation of Coffea arabica L. leaf explant

2011 ◽  
Vol 27 (2) ◽  
Author(s):  
Rina Arimarsetiowati
Keyword(s):  
Tissue Culture ◽  
Somatic Embryogenesis ◽  
Coffea Arabica ◽  
Callus Formation ◽  
Culture Technique ◽  
Plant Production ◽  
Direct Somatic Embryogenesis ◽  
Arabica Coffee ◽  
Randomized Design ◽  
Coffea Arabica L

One of the propagation technique for coffee plant production is tissue culture. Tissue culture technique for Coffea arabica L. faces some problems, mainly in the planlet formation regenerated from explants. The objective of this experiment was to examine the effect 2,4-D and 2-ip combination on the formation of direct somatic embryogenesis of Coffea arabica L. in leaves explant. Auxin (2,4-D) and cytokinin (2-ip) concentrations of, respectively, 1; 5 µM and 5; 10; 15; 20 were used as treatments. This research was conducted using completely randomized design with 10 replications. Observation to induce somatic embryos was done by quantitatively on number of callus from explant and number of embryogenic callus. Beside that, observation by qualitative descriptive was also done on deve lopment of embryogenesis. The results showed that Arabica coffee leaves explant of AS 2K clones could be induced in all medium combination except 5µM 2,4-D and 20µM 2-ip combination. Arabica coffee leaves explant of S 795, Sigararutang and AS 1 varieties could be induced in all medium combination. The highest frequency of callus formation was found in AS 2K, Sigararutang and AS 1 varieties on medium containing 1µM 2,4-D in combination with 10µM 2-ip, whereas for the S 795 variety on medium containing 5µM 2,4-D in combination with 10µM 2-ip. The highest frequency of embriogenic callus in all Arabica coffee variety could be reached on medium containing 5µM 2,4-D in combination with 15µM 2-ip. Key words : Coffea arabica L., somatic embryogenesis, 2,4-D, 2-ip, tissue culture, leaves, callus embryogenic.

scholarly journals Physical Bean Quality of Arabica Coffee (Coffea Arabica) Cultivated at High and Medium Altitude

2016 ◽  
Vol 32 (3) ◽  
pp. 151-161
Author(s):  
Dwi Nugroho ◽  
Panjisakti Basunanda ◽  
Suryadi Mw
Keyword(s):  
Coffea Arabica ◽  
Block Design ◽  
Research Station ◽  
Physical Quality ◽  
Arabica Coffee ◽  
Randomized Complete Block Design ◽  
Before And After ◽  
Coffee Cultivation ◽  
Cup Quality

Reducing productivity, outbreak of insects and diseases, and decreasingin physical and cup quality are major problems for Arabica coffee cultivation inmedium altitude. The aim of this study was to investigate the effect of altitude onphysical quality in eight genotypes of Arabica coffee. This research was conductedat two locations i.e. Andungsari Research Station-Bondowoso (1250 m asl. ashigh altitude) and Kalibendo Estate-Banyuwangi (700 m asl. as medium altitude).Randomized complete block design was used with three replications. Collecteddata consisted of outturn, weight of 100 beans, shape bean normality, apparentswelling, bulk density before and after roasting. Combined analysis on the physicalquality traits of green bean showed genotype x altitude interactions on weight of100 beans, percentage of normal beans and percentage of empty bean. Altitudesignificantly influenced coffee outturn. Decreasing in altitude from 1.250 m asl.to 700 m asl. caused declining in the outturn as much 32.9%. BP 700A, K 29, K34, K 79, and K 99 were genotypes that stable to produce normal bean and emptybeans at high and medium altidute, while K 8, K 130, and SIG were genotypeswith high normal beans at high altitude but not stable. Genotype x altitude interactiondid not occur for physical quality of other variables of outturn, bulk densitybefore and after roasting, apparent swelling, percentage of round beans,percentage of elephant beans, and percentage of triage beans. Altitude showedsignificant effect on all of physical quality of bean variables.

scholarly journals Organoleptic, Sensory and Biochemical Traits of Arabica Coffee and their Arabusta Hybrids

2021 ◽  
Author(s):  
Kahiu Ngugi ◽  
Jane Jerono Cheserek ◽  
Chrispine Ogutu Omondi
Keyword(s):  
Experimental Data ◽  
Genetic Diversity ◽  
Genetic Variation ◽  
Coffea Arabica ◽  
Small Scale ◽  
Arabica Coffee ◽  
Biochemical Compounds ◽  
Small Scale Farmers ◽  
Organoleptic Traits ◽  
Cup Quality

Coffee as a cash crop, reduces food insecurity by providing regular incomes and is a major foreign exchange earner in more than fifty tropical countries where it is grown either as Arabica (Coffea arabica) or Robust (Coffea canepora). In Kenya which grow some Robusta but mostly Arabica coffee, the production has been declining, mainly because world coffee prices have plummeted to about 5 USD for a 650Kg of un-hulled beans per acre. The only way world prices are likely to increase and benefit the small-scale farmers, is by improving the cup quality and enabling these countries to sell their coffee in specialty markets. This review, underscores the importance of analyzing and estimating organoleptic, sensory and biochemical compounds diversity in Arabica coffee, since these are the factors that determine cup quality. In an attempt to do so, the chapter presents experimental data that analyzed various sensory and organoleptic traits of Arabica coffee and their Arabusta hybrids that proves that tremendous genetic diversity exists in coffee genotypes grown in Kenya and it is possible to utilize this genetic variation to improve cup quality.

scholarly journals Efek Tiga Jenis Pohon Penaung terhadap Keragaman Serangga pada Pertanaman Kopi di Perkebunan Rakyat Manglayang, Kecamatan Cilengkrang, Kabupaten Bandung

Agrikultura ◽  
2017 ◽  
Vol 28 (3) ◽  
Author(s):  
Siska Rasiska ◽  
Abdirrassyiddin Khairullah
Keyword(s):  
Plant Diversity ◽  
Coffea Arabica ◽  
Diversity Index ◽  
Shade Trees ◽  
Gmelina Arborea ◽  
Coffee Plant ◽  
Ecological Value ◽  
Pests And Diseases ◽  
Coffee Plants ◽  
Pinus Merkusii

ABSTRACTThe Effects of Three Types of Shade Trees on the Diversity of Insects in Coffee PlantationArabican coffee (Coffea arabica) is one of the plantation commodities that has economic, social, and ecological value in Indonesia. Commonly, coffee is grown in a shaded condition that will affect the diversity of insects. This research was aimed to study the effects of three types of shade trees on the diversity of insects in coffee plants. This research was conducted at Manglayang Peasant Coffee Plantation, Cipulus Village, Cilengkrang Subdistrict, Bandung Regency and the Entomology Laboratory, Department of Plant Pests and Diseases, Faculty of Agriculture, Universitas Padjadjaran. The method used was descriptive survey through observation with systematic diagonal method in selected locations based on three types of shade trees, namely suren (Toona sureni Merr), white teak (Gmelina arborea Roxb), and pine (Pinus merkusii Jungh). The results showed that diversity index of the insects of coffee plants in suren shade trees was low to medium, and the highest percentage of abundance was Empoasca sp. Coffee plant diversity index of the insects with white teak shade trees were medium with highest percentage abundance in the Agromyzidae family and Emposca sp. Coffee plant diversity index of the insect with pine shading trees was low to moderate with the highest abundance of Empoasca sp. and Agromyzidae family.Keywords: Shade tree, Diversity, Insect, Coffee plantABSTRAKKopi arabika (Coffea arabica) merupakan salah satu komoditas perkebunan yang memiliki nilai ekonomi, sosial, dan ekologis bagi masyarakat Indonesia. Pada umumnya, kopi ditanam pada kondisi ternaungi sehingga akan berpengaruh terhadap keragaman serangga. Penelitian ini bertujuan untuk mengkaji efek dari tiga jenis pohon penaung terhadap keragaman serangga pada pertanaman kopi. Penelitian dilakukan di Perkebunan Kopi Rakyat Manglayang, Desa Cipulus, Kecamatan Cilengkrang, Kabupaten Bandung dan Laboratorium Entomologi, Departemen Hama dan Penyakit Tumbuhan, Fakultas Pertanian, Universitas Padjadjaran. Metode yang digunakan adalah survei deskriptif dengan cara observasi dengan metode diagonal sistematis pada beberapa lokasi yang dipilih berdasarkan tiga jenis pohon penaung, yaitu suren (Toona sureni Merr), jati putih (Gmelina arborea Roxb), dan pinus (Pinus merkusii Jungh). Hasil penelitian menunjukkan bahwa serangga tanaman kopi pada tanaman penaung suren indeks keragamannya rendah sampai sedang, dan persentase kelimpahan tertingginya adalah Empoasca sp. Serangga tanaman kopi dengan pohon penaung jati putih indeks keragamannya sedang dengan persentase kelimpahan tertinggi pada family Agromyzidae dan Emposca sp. Serangga tanaman kopi dengan pohon penaung pinus indeks keragamannya rendah hingga sedang dengan kelimpahan tertinggi Empoasca sp. dan famili Agromyzidae.Kata Kunci: Pohon penaung, Keragaman, Serangga, Tanaman kopi

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