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All Journal HAYATI Journal of Biosciences AGRIVITA, Journal of Agricultural Science
Nugroho, Rizki Bagus
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Flowering Phenology and SiDREB2-based SNAP Marker-assisted Hybridity Confirmation for Artificial Hybridization of Indonesian Foxtail Millet (Setaria italica L. Beauv) Genotypes Nugroho, Rizki Bagus; Chusnah, Uswatun; Suwarno, Willy Bayuardi; Ardie, Sintho Wahyuning
HAYATI Journal of Biosciences Vol. 31 No. 6 (2024): November 2024
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.31.6.1082-1094

Abstract

Foxtail millet hybrid development encounters challenges due to its self-pollinating nature, small florets, and tool availability for confirming true hybrid. Our research aimed to assess flowering phenology and explore artificial hybridization employing SiDREB2 based-SNAP marker. The research consisted of three experiments. The first experiment focused on the panicle phenology of foxtail millet, while the second experiment focused on floret phenology and reproductive organs. The artificial hybridization successfulness was validated with SNAP markers based on the SiDREB2 gene in the third experiment. Observations on two genotypes (ICERI-5 and ICERI-6) revealed panicle initiation at 49–69 days after planting (DAP), with anthesis occurring 6 days after panicle emergence (DAPE). Florets exhibited the formation of reproductive organs at 3 DAPE, delineating distinct stages of pollen development leading up to anthesis. Our findings emphasized the significance of implementing male-sterile induction treatment at 4 DAPE to regulate pollen development for successful hybridization by 6 DAPE. The hybrid evaluation revealed varied germination rates and confirmed hybrid percentages across different crossing series, validated by SiDREB2-based SNAP marker. ICERI-5×Botok-4 exhibited high germination but a low confirmed hybrid percentage, while Botok-4×ICERI-5 and Botok-10×ICERI-6 showed the opposite trend. Reciprocal crossings showed unilateral incompatibility in confirmed hybrid percentage.
In Vitro Growth and Development of Progenies Derived from Crossings of Several Dendrobium Accessions Under Different Media Maulida, Desi; Yusnita, Yusnita; Hapsoro, Dwi; Agustiansyah, Agustiansyah; Karyanto, Agus; Hamiranti, Rahmadyah; Nugroho, Rizki Bagus
AGRIVITA Journal of Agricultural Science Vol 47, No 2 (2025)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v47i2.4505

Abstract

The objective of plant hybridization is to generate alternative superior phenotypes with the aim of decreasing the dependence on wild orchid exploitation in nature. Although interspecies crosses in Dendrobium are very likely to occur and there is a low chance of experiencing bud depression, interspecies crosses have the potential to encounter several problems, including failure of embryo development resulted to the seeds unable to germinate. Media formulation is the most essential component in the success of in vitro culture of orchid seeds. Therefore, this study aimed to obtain new Dendrobium hybrids and the best media formulation for germination and seedling growth. A total of three experiments were conducted including hybridization, the impacts of basic media namely (1) MS, (2) VW, and (3) foliar fertilizer both with and without the addition of tryptone, on seedling germination. The results showed that there was no compatibility barriers observed in all crosses. Foliar fertilizer + tryptone media was recommended for orchid seedlings because it produced better growth and roots up to 8 months after planting (MAP). For best results on Dendrobium hybrid seedlings, MS + tryptone media up to 6 MAP was used followed by deflasking into VW + tryptone to stimulate optimal root growth before hardening.
Co-Authors , Agustiansyah Agus Karyanto Chusnah, Uswatun Desi Maulida DWI HAPSORO Hamiranti, Rahmadyah Sintho Wahyuning Ardie Willy Bayuardi Suwarno YUSNITA YUSNITA