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All Journal Buletin Palawija Jurnal Planta Tropika Biosaintifika: Journal of Biology & Biology Education Buletin Palawija
Wiwit Rahajeng
BALITKABI
Agriculture, Biological Sciences & Forestry

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VARIETAS KEDELAI UMUR GENJAH Rahajeng, Wiwit; Adie, M. Muchlish
Buletin Palawija No 26 (2013)
Publisher : Balai Penelitian Tanaman Kacang-kacangan dan Umbi-umbian

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Abstract

Varietas  kedelai (Glycine max L. Merr.) umur genjah banyak diminati karena dapat memberikan berbagai keuntungan seperti terhindar dari kekeringan dan hama serta meningkatkan indeks pertanaman dalam setahun. Umur kedelai ditentukan oleh faktor genetik dan lingkungan. Umur kedelai di Indonesia dikelompokkan menjadi sangat genjah (<70 hari), genjah (70–79 hari), sedang (80–85 hari), dalam (86–90 hari), dan sangat dalam (>90 hari), sedangkan pengelompokan umur masak kedelai di luar negeri (Amerika) didasarkan pada adaptasi dalam letak lintang. Masak fisiologis pada kedelai ditandai dengan >60% polong berwarna coklat, dipanen setelah >80% polong masak. Pada kedelai, terdapat tujuh loci dengan dua alel pada masingmasing lokus yang mengendalikan waktu berbunga dan umur masak kedelai, yaitu: E1, E2, E3, E4, E5, E6, E7 dan E8. Sampai 2011, terdapat lima varietas berumur masak di bawah 76 hari, yaitu Tengger, Meratus, Grobogan, Gepak Kuning, dan Gepak Ijo, dan varietas kedelai berumur genjah (74 hari) yaitu Gema. Hasil kedelai varietas genjah yang dihasilkan masih dapat ditingkatkan, sehingga perakitan varietas berumur pendek dengan produksi tinggi perlu terus dilakukan.
Genetic Variability, Heritability, and Correlation of Some Agronomical Characters of Soybean Varieties Kuswantoro, Heru; Artari, Rina; Rahajeng, Wiwit; Ginting, Erliana; Supeno, Agus
Biosaintifika: Journal of Biology & Biology Education Vol 10, No 1 (2018): April 2018
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v10i1.11014

Abstract

Genetic diversity and inheritance of the traits determine the success of the breeding program. Analysis of genetic variability and heritability assist breeders to decide a strategy and appropriate selection criteria that will be used to repair the desired character. The purpose of this study was to obtain information about genetic diversity, heritability and correlation of nine agronomic characters of soybean varieties. The materials were 16 soybean varieties that arranged in a randomized block design with three replications. The results showed that days to flowering, number of branches per plant, number of reproductive nodes, number of unfilled pods per plant, weight of 100 seeds, and grain yield revealed broad CVG (Genetic Coeffiecient of Variance), whereas the days to maturity, plant height, number of pods per plant had a narrow CVG. CVP (Phenotypic Coeffiecient of Variance) value higher than the value of CVG on all the observed characters with a slight difference, except for grain yield. The broad sense heritability varied from low (seed yield), medium (the number of branches, number of reproductive nodes, number of pods and the number of unfilled pods), and high (days to flowering, days to maturity, plant height, and weight of 100 seeds). Characters of days to flowering and weight of 100 seeds are effectively used as selection criteria because they had a broad CVG and high heritability. Correlation of all yield components to the seed yield was not significant, and negatively correlated to weight of 100 seeds. Variety with higher plant height tended to have a higher number of branches, reproductive nodes and filled pod per plant.
Keragaan Karakter Agronomi dan Parameter Genetik Aksesi Ubi Jalar serta Toleransinya terhadap Hama Boleng Rahajeng, Wiwit; Indiati, Sri Wahyuni
Buletin Palawija Vol 16, No 1 (2018): Buletin Palawija Vol 16 No 1, 2018
Publisher : Balai Penelitian Tanaman Aneka Kacang dan Umbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (229.24 KB) | DOI: 10.21082/bulpa.v16n1.2018.p1-8

Abstract

Plasma nutfah merupakan sumber gen yang digunakan dalam perakitan varietas. Informasi dari aksesi plasma nutfah mengenai keragaan, keragaman, daya pewarisan, dan kemajuan genetik harapan, serta toleransinya terhadap serangan hama dan penyakit perlu tersedia untuk merakit varietas baru. Tujuan penelitian adalah untuk mendapatkan informasi keragaan karakter agronomi dan paramater genetik aksesi ubi jalar (Ipomoea batatas L.) serta toleransinya terhadap hama boleng (Cylas formicarius). Penelitian dilaksanakan di Kebun Percobaan Muneng pada Mei–September 2014. Penelitian menggunakan rancangan acak kelompok dengan tiga ulangan. Bahan yang digunakan adalah 75 aksesi ubi jalar koleksi Balai Penelitian Tanaman Aneka Kacang dan Umbi (Balitkabi) dari berbagai daerah di Indonesia. Hasil analisis ragam menunjukkan perbedaan genotipe yang sangat nyata pada semua karakter yang diamati. Aksesi MLGI 0247 menunjukkan bobot umbi per plot tertinggi, sedangkan aksesi MLGI 0175 menunjukkan nilai terendah. Tujuh puluh lima aksesi yang diuji menunjukkan perbedaan ketahanan terhadap hama boleng yaitu satu aksesi ketahanan tinggi (HR), 19 aksesi ketahanan menengah (MR), 41 aksesi ketahanan rendah (LR), tujuh aksesi rentan (S), dan tujuh aksesi ekstrim rentan (ES). Empat aksesi (MLGI 0257, MLGI 0035, MLGI 0226, MLGI 0281) menunjukkan potensi hasil cukup tinggi dengan ketahanan terhadap hama boleng dengan kategori LR. Karakter diameter sulur, bobot tajuk, bobot umbi/plot, kadar bahan kering umbi, dan intensitas kerusakan umbi memiliki keragaman genetik yang luas, sedangkan panjang sulur, luas daun, indeks panen, jumlah umbi/plot, dan persen umbi boleng memiliki keragaman genetik yang sempit. Indeks panen dan bobot umbi/plot memiliki nilai keragaman genetik luas, heritabilitas, dan kemajuan genetik harapan yang tinggi, sehingga karakter tersebut berguna sebagai kriteria seleksi dan berpotensi memberikan respon positif dalam perbaikan hasil ubi jalar.
Genetic Parameters of Agronomic Traits in Sweetpotato Accessions Rahajeng, Wiwit; Restuono, Joko; Indriani, Febria Cahya; Purwono, Purwono
Biosaintifika: Journal of Biology & Biology Education Vol 12, No 2 (2020): August 2020
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v12i2.23780

Abstract

Germplasm as a source of genes in sweetpotato breeding requires information on appearance and genetic parameters. The objectives of this research were to determine the performance and genetic parameters of sweet potato accessions. The research was conducted at Kendalpayak Research Station, Malang, East Java, Indonesia. The materials used were thirty sweet potato accessions from Indonesian Legumes and Tuber Crops Research Institute (ILETRI) germplasm collection. The research was arranged in a Randomized Block Design (RBD) with two replications. The variables observed included: the vines length, the weight of vines, the number and weight of the saleable root per plot, the number and weight of the non-saleable root per plot, the number and weight of root per plant, the root yield, the harvest index, and the dry matter content. The results of ANOVA showed a significant difference among the tested genotypes in almost all traits observed except on weight of non-saleable root. PCV estimation was higher than GCV estimation for all the observed characters. The weight of the saleable root per plot, the weight of root per plant, and the root yield that showed a wide range of PCV and GCV as well as high broad-sense heritability indicated that these traits had additive gene effect and more reliable for effective selection. The broad GCV in a population is effective for selection to obtain the superior variety.
Evaluation of Promising Sweet potato Clones for Higher Root Yield and Dry Matter Content Rahajeng, Wiwit; Restuono, Joko; Indriani, Febria Cahya; Purwono, Purwono
PLANTA TROPIKA: Jurnal Agrosains (Journal of Agro Science) Vol 9, No 1 (2021)
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/pt.v9i1.6026

Abstract

Dry matter content is one of the important characteristics of sweet potatoes in addition to high yield. The aim of this study was to evaluate the performance of promising sweet potato clones for higher root yield and dry matter content. A hundred promising sweet potato clones were evaluated and arranged in randomized block design with two replication. The variables observed included: weight of vine, harvest index, number of root per plot, the weight of root per plot, dry matter content, root yield, root skin color, and flesh color. The analysis of variance showed a significant difference among the tested genotypes in all traits observed. A hundred promising sweet potato clones showed that root yield has varied ranged from 4.88–41.38 t h-1 with an average 20.28 t h-1 and dry matter content ranged from 19.19 – 40.65% with an average 30.47%. Fifteen promising clones of a hundred clones tested had high root yield and dry matter content with varying color flesh.
Co-Authors Artari, Rina Erliana Ginting Febria Cahya Indriani Heru Kuswantoro M. Muchlish Adie Purwono Purwono, Purwono Restuono, Joko Sri Wahyuni Indiati Supeno, Agus