Viability assessment of quince cuttings (Cydonia Mill.) and pear pollen (Pyrus L.) after cryoconservation in liquid nitrogen vapor (-183185°C)I.S. Chepinoga, M.V. Erastenkova, А.А. Khokhlenko and V.G. VerzhukBIO Web of Conferences, 78 (2023) 03001DOI: https://doi.org/10.1051/bioconf/20237803001