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Abohatem Mansour A.,Al-Qubati Yousra,Abohatem Hanan,Bakil Yazid 한국작물학회 2024 Journal of crop science and biotechnology Vol.27 No.2
Potato seeds from local varieties carry high levels of virus infection which is a major limitation of potato yield production. In vitro culture techniques are the most promising alternative for obtaining disease-free quality plants and potato minitubers. The combination of Gibberellic acid (GA3) and Naphthalene acetic acid (NAA) were evaluated at three concentrations (0.5 + 0.25, 0.25 + 0.15 and 0.125 + 0.075 mg/L), to identify a suitable multiplication medium of in vitro plantlets for the production of clean seed potato of Diamant variety, derived from in vitro sprouts culture. Results clearly showed that the combination medium from 0.5 mg/L GA3 + 0.25 mg/L NAA had shown maximum potential of in vitro sprouts growth with higher values in leaves number, node number and shoot length. While the combination medium from 0.25 mg/L GA3 + 0.15 mg/L NAA was the optimum for shoot multiplication, as improved the shoot number, leaves number, shoot length during four subcultures. The acclimatization of plants process achieved 98% success of survival with irrigated plantlets every 3 days with carbendazim during the acclimatization stage, and better plants growth was also observed. The protocol developed assists in producing large-scale plantlets and obtaining high survival of plants in the greenhouse, which led to scale production of clean seed of potato tubers and stopping the import of potato seed.
Mansour Abohatem,Yousra Al-Qubati,Hanan Abohatem The Korean Society of Plant Biotechnology 2023 JOURNAL OF PLANT BIOTECHNOLOGY Vol.50 No.1
All studies on date palm somatic embryogenesis have focused on germination in the presence of light while neglecting germination in darkness, which mimics the germination process of zygotic embryos within seeds. To improve the date palm micropropagation protocol, we investigated the effects of light and darkness incubation on the germination of indirect date palm somatic embryos and their subsequent conversion into plantlets. Darkness incubation emerged as a pivotal factor in the germination of indirect date palm somatic embryos and their successful conversion into plantlets. Darkness incubation significantly decreased the time required for the conversion of indirect somatic embryos into plantlets, halving the duration from 24 weeks to only 12 weeks. The micropropagation protocol was modified, consolidating the previous two distinct stages of germination and elongation under light incubation into a single stage under darkness incubation. These findings modified the protocol and significantly reduced the overall duration of the date palm micropropagation protocol.