TY - JOUR AU - Tri, Nguyen Minh AU - Quynh, Nguyen Thi PY - 2014/11/12 Y2 - 2024/03/28 TI - Effects of sugar concentration, natural ventilation and supporting materials on the growth of in vitro strawberry plantlets (Fragaria ananassa Duch.) and on the survival rate of ex vitro plantlets JF - Academia Journal of Biology JA - AJB VL - 30 IS - 2 SE - Articles DO - 10.15625/0866-7160/v30n2.5424 UR - https://vjs.ac.vn/index.php/vjbio/article/view/5424 SP - 45-49 AB - <p>The growth<strong> </strong>of<strong> </strong>strawberry (<em>Fragaria ananassa</em> Duch.) plantlets cultured <em>in vitro</em> as affected by sugar, types of supporting material and number of air exchange of the vessel was investigated. Shoots of <em>in vitro</em> strawberry plantlets were cultured on the on full strength MS (Murashige &amp; Skoog 1962) basal liquid medium with 30 g/l sugar and without sugar. Two types of supporting material, agar and florialite, and two levels of air exchange expressed by number of air exchange per vessel, 0.3 and 2.3 per hour, were studied. At the end of a 35-day culture period, fresh weight, dry weight, leaf area, number of leaves, chlorophyll content, photosynthetic net rate of plantlets grown on florialite soaked in sugar-free medium and under the higher number of air exchanges were greater than those in sugar-containing medium. The survival rate of <em>ex vitro</em> plantlets cultured under a high number of air exchange and supporting with florialite was also the highest (98%) among SA, SF, FA and FF treatments.</p> ER -