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All Journal Jurnal Ilmu-Ilmu Pertanian Indonesia Konservasi Hayati
Marwanto Marwanto
Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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KINETIN INFUSION THROUGH AN ORGANIC SOLVENT AS A MEANS OF REDUCING SOYBEAN SEED DETERIORATION DURING HIGH-TEMPERATURE STORAGE Marwanto Marwanto
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 7, No 1 (2005)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.7.1.1-7

Abstract

Soybean seeds deteriorate rapidly when stored under unfavorable conditions and kinetin infusion prior to storage may reduce the rate of seed deterioration. To answer this hypothesis, seeds of three cultivars of soybeans with black seed coat color were permeated for four hours at a room temperature with hormone kinetin at a concentration of 1.0 mM dissolved in acetone before storage at 350C for up to six months in Agronomy Laboratory on July 2000, and their germination, accelerated aging germination and germination speed were compared with those of untreated seeds stored under the same conditions. The treatments were arranged in a split split plot design with three replications. Seeds that had been infused with kinetin prior to storage germinated to a high final percentage (from 98 to 83%) up to four months of storage, maintained a high accelerated aging germination (from 97 to 65%) up to four months of storage and retained a high speed of germination throughout the storage period. By contrast, untreated seeds showed a rapid decline in the three seed quality indicators, and by six months of storage their germination was already less than 30% and their accelerated aging germination declined to less than 20%. The promotive effects of kinetin infusion on reducing the rate of deterioration of soybean seeds were apparently dependent of the cultivar. Among the three cultivars, seeds of Cikuray lost their germination, accelerated aging germination and speed of germination at a slower rate than those of Merapi and Kalitur irrespective of kinetin infusion treatment and storage period. Therefore, it is evident that kinetin infusion prior to storage, in addition to the acceleration of germination, resulted in a delay of soybean seed deterioration.
HUBUNGAN ANTARA KANDUNGAN LIGNIN KULIT BENIH DENGAN SIFAT-SIFAT KHUSUS KULIT BENIH KACANG HIJAU Marwanto Marwanto
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 9, No 1 (2007)
Publisher : Program Studi Ilmu Tanah Fakultas Pertanian UNIB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.9.1.6-11

Abstract

Lignin content in  seed coat may have a direct effect on seed coat characteristics of mung bean  genotypes (Vigna radiata). This research was designed to study the variation of seed coat lignin content among mung bean genotypes and its relationship to permeability, seed electrolyte conductivity and hard seed.  Seeds of eleven mung bean genotypes were grown in research plots at Agriculture Faculty, Bengkulu University on February 2002 and hand harvested at R8 maturation stage. The plots were arranged in a randomized complete block design having three replications. Genotypic differences were evident for seed coat lignin content, seed coat permeability, seed electrolyte conductivity and hard seed. The seed coat lignin content contributed to variability in permeability, seed electrolyte conductivity and hard seed and closely related with permeability (r =0.75*), with seed electrolyte conductivity (r = - 0.93**) and with hard seed (r = - 0.71*). Overall, seed coat lignin content appears to have determining effects on seed coat characteristics.
SURVEY KETERSEDIAAN PESTISIDA HAYATI DI PROVINSI BENGKULU Magda Lena; Tunjung Pamekas; Marwanto Marwanto
Konservasi Hayati Vol 17, No 2 (2021): OKTOBER
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/hayati.v17i2.16951

Abstract

Pestisida hayati merupakan pestisida yang bahan utamanya bersumber dari makhluk hidup seperti bakteri, cendawan, nematoda atau virus yang bisa mengendalikan atau menghambat pertumbuhan patogen pada tanaman. Penelitian ini bertujuan untuk mengevaluasi ketersediaan pestisida hayati di Kota dan beberapa Kabupaten di Provinsi Bengkulu. Penelitian dilakukan dengan menggunakan metode purposive random sampling, yaitu dengan mempelajari peta kota/kabupaten, kemudian diambil sampel kecamatan yang berada di pinggir jalan raya secara random. Survey dilakukan di Kota Bengkulu (kecamatan Muara Bangkahulu, Teluk Segara, Ratu Agung, Selebar, dan Kampung Melayu), Kabupaten Bengkulu Tengah (Kecamatan Karang Tinggi, Pondok Kelapa, dan Talang Empat), Kabupaten Kepahiang (Kecamatan Kepahiang, Merigi, dan Ujan Mas), dan Kabupaten Rejang Lebong (Kecamatan Curup, Curup Selatan, Curup Tengah, dan Curup Utara). Hasil penelitian menunjukkan bahwa pestisida/produk hayati hanya tersedia di tiga Kabupaten dan empat Kecamatan, yaitu Kabupaten Bengkulu Tengah (Kecamatan Talang Empat: Futricho berbentuk tepung dan berwarna abu-abu), Kepahiang (Kecamatan Kepahiang: Bionsekta berbentuk tepung dan berwarna merah bata, Kecamatan Merigi: Pembenah Tanah Hayati TAYU berbentuk cair dan berwarna coklat serta baunya sedikit menyengat) dan Kabupaten Rejang Lebong (Kecamatan Curup Tengah: Organic Soil Treatment (OST) Green Botane berbentuk butiran dan berwarna hitam).  Sangat terbatasnya ketersediaan pestisida hayati sehingga penggunaan pestisida kimia tetap tinggi
KORELASI DAN SIDIK LINTAS KARAKTER PERTUMBUHAN DAN KOMPONEN HASIL DENGAN HASIL PADA 15 GENOTIPE HIBRIDA JAGUNG Hellianti Pennita; Catur Herison; Marwanto Marwanto; Rustikawati Rustikawati
Jurnal Ilmu-Ilmu Pertanian Indonesia Vol 22 No 1 (2020)
Publisher : BPFP Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jipi.22.1.1-8

Abstract

[PATH ANALYSIS OF GROWTH CHARACTERS AND YIELD COMPONENTS WITH THE YIELD OF 15 GENOTYPES OF MAIZE HYBRID].  Determination of traits used as the selection criteria are based on the trait(s) that have a close relationship to the yield.  The aims of this research were to measure the closeness of the relationship between morphological (growth and yield component) traits and crop yield, and to determine the trait that directly or indirectly affected on maize yield.  The research was conducted in Rimbo Kedui’s Village, South Seluma Subdistrict, Seluma District, Bengkulu Province on May 2017 to August 2017.  The experimental design used was a Complete Randomized Block Design (CRBD) in a single factor with 3 replications.  The treatments were 15 maize hybrid genotypes, consisting of CT1, CT2, CT3, CT4, CT5, CT6, CT7, CT8, CT9, CT10, CT11, CT12, CT13, CT14, and CT15.  The data were statistically analyzed by analysis of varians (ANOVA) with P(a=5%).  The qualitative data were analyzed descriptively. The result of correlation analysis revealed that the yield of maize hybrids highly correlated to some growth and yield component factors.  High-yielding maize hybrids were supported by higher ear diameter, plant fresh weight, plant dry weight, plant height, the number of seeds per ear.  Plant dry weight became the variable that has the highest direct effect with positive correlation on the yield.  The second highest rank was the number of seeds per ear with also a positive correlation value.  Yield improvement of maize hybrid, therefore, can be obtained by fostering the plant total biomass and/or by multiplying the number of seeds per ear.
Co-Authors Hellianti Pennita Herison, Catur Magda Lena Rustikawati Tunjung Pamekas