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All Journal Pelita Perkebunan BioEksakta : Jurnal Ilmiah Biologi Unsoed
Triani Hardiyati
Universitas Jenderal Soedirman
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology Veterinary

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KUALITAS BIJI DAN KARAKTER AGRONOMI PADI HITAM (Oryza sativa L.) LOKAL PEKALONGAN DENGAN PENAMBAHAN PAKLOBUTRAZOL DAN GIBERELIN Endang Triyani Prihantari; Triani Hardiyati; Siti Samiyarsih
BioEksakta : Jurnal Ilmiah Biologi Unsoed Vol 3 No 2 (2021): BioEksakta
Publisher : Fakultas Biologi Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.bioe.2021.3.2.4240

Abstract

Black rice (Oryza sativa L.) is a rice variety that has many additional functions and is used as a functional food. However, black rice has a longer harvest period and has a higher apparent stem height than other types of rice so that black rice plants are easy to break. This will reduce the quality of rice plants. One of the methods that can be done to overcome this problem is treating by paclobutrazol and gibberellin. The combination of paclobutrazol and gibberellin is expected to provide better rice growth and improve the quality of rice seeds. The purpose of this study was to determine the effect of the addition of paclobutrazol and gibberellin on seed quality, palea-lemma size and agronomic character of local Pekalongan black rice (Oryza sativa L.). The research was conducted experimentally using a completely randomized design (CRD) of factorial treatment pattern. The first factor was paclobutrazol with 4 levels of concentration (0 ppm, 100 ppm, 200 ppm and 300 ppm) applied once at 4 weeks of plant age and the second factor was gibberellin with 4 levels of concentration (0 ppm, 100 ppm, 200 ppm and 300 ppm ) applied once at the age of 6 weeks of plants, so that are 48 combinations with each treatment was replicated 3 times. The parameters observed included plant height, leaf width, flowering age, harvest age, palea-lemma size, weight of 100 seeds, protein and amylose content. The data obtained were analyzed using the ANOVA test at the 95% confidence level, and continued with the Honestly Significant Difference (HSD) test at an error rate of 5%.The results showed that the interaction between paclobutrazol and gibberellin was not significant, but treatment of 300 ppm paklobutrazol showed the best results in plant height inhibition, while the treatment of paclobutrazol 200 ppm was the best concentration to stimulate flowering and harvesting age. Treatment of gibberellin 100 ppm was found the best concentration to increase leaf width while a concentration of 300 ppm proved to give the best results for palea-lemma size, amylose content, protein content and weight of 100 seeds per plant.
Effect of polyethylene glycol 6000 and storage period on seed quality of cocoa (Theobroma cacao L.) Astiti Rahayu; Triani Hardiyati; Ponendi Hidayat
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 30 No 1 (2014)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v30i1.193

Abstract

Increased productivity of cocoa needs high quality of cocoa seeds which are generally provided by certified seed gardens located far from smallholders farm, where seed delivery takes long time and may reduce physiological quality of seeds. One effort to maintain the seed quality is by treatment the seeds with polyethylene glycol6000 (PEG 6000). This study was aimed to study the interaction of PEG 6000 concentration and storage period on cocoa seed quality, and to determine the best concentration of PEG 6000 and storage period to maintain cocoa seed quality. The research was conducted in seed storage room, seed laboratory and green houseof PPPPTK, Cianjur. The experimental design used was a factorial completely randomized design and each combination treatment repeated three times. The first factor was concentration of PEG 6000 of 0%, 20%, 40%, and 60%, and the second factor was the storage period of 3 weeks, 6 weeks, 9 weeks, and 12 weeks. The results showed that concentration of PEG 60% with three weeks storage period was able to minimize the number of moldy seeds. The concentration of PEG 20%, 40%, and 60% were able to prevent seed germination in storage until six weeks. Concentration of PEG 6000 20% was able to maintain moisture content, seed germination, and germination rate.Key words:cocoa seed, storage, recalcitrant, PEG
Co-Authors Astiti Rahayu Endang Triyani Prihantari Ponendi Hidayat Siti Samiyarsih