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Start date: 2024Subject: search.filters.subject.Seed germination

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Now showing 1 - 4 of 4
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    The effectiveness of seed coating with microbial fungicide on controlling seed quality and damping-off disease of tomato
    (2026-01-01)
    Baikaden, S.
    ;
    Sikhao, P.
    ;
    Koohakan, P.
    Microbial seed coating was not significantly influenced germination percentage, germination index, or germination speed under laboratory conditions. Whereas, seeds coated with Trichoderma asperellum and Bacillus subtilis consistently demonstrated to improve seedling emergence and vigor in greenhouse conditions. With respect to disease suppression, coatings seeds with T. asperellum resulted to reduce both the incidence and severity of damping-off disease caused by Pythium torulosum. The lowest disease incidence (30.50%) and severity (17.43%) were observed in seedlings from T. asperellum-coated seeds. These findings highlighted the potential of antagonistic microbial coatings to promote seedling health and provided a sustainable strategy for managing soilborne diseases. This approach is offered a promising complement or alternative to chemical control methods in commercial tomato seedling production.
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    Plant regeneration of Dimocarpus scandens (Winit & Kerr) Boonsuk & Chantar. (Lamyai-Thao) by tissue culture technique
    (2025-05-01)
    Jitwetkul, A.
    ;
    Poeaim, A.
    ;
    Pongtongkam, P.
    ;
    Chareonsap, P. P.
    ;
    Poeaim, S.
    The minimum contamination percentage (25%) was recorded in the experiment using 0.2% mercuric chloride (HgCl2) for 20 min, which was observed to be a 50% germination rate after 2 weeks of culture. The maximum germination rate (68%) was obtained on Murashige and Skoog (MS) solid medium supplemented with 1.0 mg/L 6-benzylaminopurine (BAP), giving a shoot length of 48.00 mm. and root length of 31.40 mm. The optimal condition of nodal segment sterilization was recorded in the experiment using 0.1% HgCl2 for 10 min, which gave 80% survival explants. For shoot induction, it was worked on MS solid medium with 0.5 mg/L 6-benzylaminopurine (BAP) that induced the highest average length of 11.31 mm. The highest root formation frequency (50%) and root length (3.0 mm) were achieved on an MS medium containing 2.0 mg/L indole-3-butyric acid (IBA). The plantlets were acclimatized and established in the soil.
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    The Impact of Different Colors of Light-Emitting Diodes on Cacti Germination and Seedling Growth
    (2025-03-01)
    Ritthidechrat, Kittiphan
    ;
    Anuwong, Chamaiporn
    To identify suitable light colors to break seed dormancy and enhance the growth of cactus seedlings. A short photoperiod and less light intensity affect seedlings, resulting in low germination and slow growth. Four cacti species are A. asterias, E. grusonii, M. geometrizans, and T. alonsoi, commonly grown as ornamental plants. The completely randomized design was experimental. The plant was cultured under the five different colors of light-emitting diodes (LEDs): natural light (NL), red, blue, green, and white LED, providing light for 12 hours/day. The results found that all cactus seeds can absorb water and have more than 50% viability, except for E. grusonii. The seed germination (%G) increased in NL and various colors of LED. White LED had the highest %G in A. asterias, but green LED had the highest α-amylase activity. In E. grusonii, M. geometrizans, and T. alonsoi, %G and α-amylase activity were the highest under red LED. In addition, all four cacti species had the lowest mean germination time under red LED. The growth of A. asterias and M. geometrizans had the highest seedling vigor, stem diameter, plant height, and root length under NL. They had the highest chlorophyll a and chlorophyll b. In E. grusonii and T. alonsoi under NL, with the highest stem diameter, plant height and increases chlorophyll a and chlorophyll b. However, white light has the maximum root length and seedling vigor. Thus, red, green, and white LEDs effectively break seed dormancy, while white LEDs stimulate cactus growth as the natural light.
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    Determination of mechanical damage on soybean seed by clorox soak test
    (2024-01-01)
    Baikaden, S.
    ;
    Thepchit, K.
    ;
    Buaket, T.
    ;
    Sikhao, P.
    The Clorox soak test was assessed soybean seed damage, proving to be a comfortable and effective method for detection. Among different seed lots, the third lot exhibited the lowest percentage of damaged seeds. Notably, these seeds yielded seedlings with the highest root length, shoot length, and dry weight. Regarding damage levels, both undropped seeds and those dropped two times displayed the highest shoot length and seedling dry weight. Seed vigor assessed through accelerated aging that showed Lot 2 of soybean seeds had the highest vigor across all damage levels.
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