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All Journal Pelita Perkebunan Agrotechnology Research Journal
Ari Wibowo
Indonesian Coffee and Cocoa Research Institute
Agriculture, Biological Sciences & Forestry

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Pendugaan Pengaruh Tetua Betina dan Daya Gabung pada Persilangan Kopi Robusta Ari Wibowo; Ucu Sumirat
Agrotechnology Research Journal Vol 6, No 1 (2022): Agrotechnology Research Journal
Publisher : Perkumpulan Agroteknologi/Agroekoteknologi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (199.744 KB) | DOI: 10.20961/agrotechresj.v6i1.59136

Abstract

Breeding programs need genotypic variation to make a selection and create a promising variety. Hybridization in plants produces genetic variations in the offspring to select Robusta coffee as superior planting material. The maternal-effect and combining ability help determine the next breeding strategy. This study aimed to determine the maternal effect and the combining ability on the morphological characters of branches and leaves of Robusta coffee diallel crosses. The study involved six groups of F1 offspring and their reciprocals from three parents, namely clones BP961, Q121, and BP409, which were planted singly side in the Kaliwining Experimental Garden, Jember, East Java. The estimation of female parental effect was analyzed using a t-test, and combining ability was analyzed using diallel analysis method III. The analysis results showed that the female parental effect occurred on the character of the internode length in all cross combinations and did not occur on stipule length, petiole length, leaf length, and leaf width. The parent of the cross that can be the best combiner was parent BP961 for the petiole length and leaf length, parent Q121 for stipule length and internode length, and parent BP409 for leaf width character.
Seed germination performance of nine Arabica coffee (Coffea arabica L.) varieties under the laboratory condition after six months of storage period. Ari Wibowo; Dwi Nugroho; Ucu Sumirat
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 36 No 3 (2020)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v36i3.450

Abstract

Coffee seeds are classified into intermediate seeds which require high moisture content during the storage and possess a short shelf life. Seed germination testing aims to determine the potential of a seed lot, evaluate seed quality during the storage and also to estimate the success of seedling in the nursery. This experiment aimed to determine the germination performance of several Arabica coffee varieties after being stored for six months at controlled temperature. Nine varieties of Arabica coffee, namely Abesinia-3, Andungsari-1, BLP, Gayo-2, Goiaba, Kartika-1, Kayumas, MP-3, and S-795 were used in this study. The seeds were harvested in the 2019 harvest season (September) and the germination was tested in April 2020. The germination test was carried out in laboratory by using petridish. The result showed that the tested Arabica coffee seeds still had a high germination percentage which was more than 85%. Only three varieties namely S-795, Abesinia-3, and Goiaba had low germination growth (<80%). Meanwhile, Kayumas, BLP, and Kartika-1 coffee varieties had the best germination growth with an average length of 34.19 mm; 39.79 mm and 39.41 mm, respectively. Kartika-1 variety needs 6–7 days to germinate; Kayumas, BLP, and Goiaba varieties took 7–8 days; S-795 and MP-3 took 10 days; as well as Andungsari-1, Abesinia-3, and Gayo-2 which took 10–12 days. Arabica coffee seeds that had a short germination time will had a high germination rate and otherwise. Each variety displayed a different germination performance. BLP, Kartika-1, Gayo-2 and MP-3 varieties had high potential germination, 86.67%; 89.17%; 86.67%, and 93.33%, respectively. Kayumas, BLP, and Kartika-1 varieties showed significantly longer germination, namely 34.19 mm; 39.79 mm and 39.41 mm, respectively. The fastest of average germination time was possessed by Kartika-1 variety (6.54 days) and the highest seed germination rate was also possessed by Kartika-1 variety (0.153 per day).
Co-Authors Dwi Nugroho Ucu Sumirat