Rugienius Rytis, Bendokas Vidmantas, Siksnianas Tadeusas, Stanys Vidmantas, Sasnauskas Audrius, Kazanaviciute Vaiva
Lithuanian Research Centre for Agriculture and Forestry, Department of Orchard Plant Genetics and Biotechnology, Institute of Horticulture, LT-54333 Babtai, Lithuania.
Department of Eukaryote Gene Engineering, Institute of Biotechnology, Vilnius University, LT-10257 Vilnius, Lithuania.
Plants (Basel). 2021 Mar 16;10(3):557. doi: 10.3390/plants10030557.
Plants exposed to drought stress conditions often increase the synthesis of anthocyanins-natural plant pigments and antioxidants. However, water deficit (WD) often causes significant yield loss. The aim of our study was to evaluate the productivity as well as the anthocyanin content and composition of berries from cultivated "Rojan" and hybrid No. 17 plants (seedlings) grown under WD. The plants were grown in an unheated greenhouse and fully irrigated (control) or irrigated at 50% and 25%. The number of berries per plant and the berry weight were evaluated every 4 days. The anthocyanin content and composition of berries were evaluated with the same periodicity using HPLC. The effect of WD on the yield parameters of two evaluated genotypes differed depending on the harvest time. The cumulative yield of plants under WD was not less than that of the control plants for 20-24 days after the start of the experiment. Additionally, berries accumulated 36-56% (1.5-2.3 times, depending on the harvest time) more anthocyanins compared with fully irrigated plants. Our data show that slight or moderate WD at a stable air temperature of about 20 °C positively affected the biosynthesis of anthocyanins and the yield of berries.
暴露于干旱胁迫条件下的植物通常会增加花青素（天然植物色素和抗氧化剂）的合成。然而，水分亏缺（WD）往往会导致显著的产量损失。我们研究的目的是评估在WD条件下种植的栽培“罗扬”和17号杂交植物（幼苗）的浆果的生产力以及花青素含量和组成。这些植物在未加热的温室中生长，进行充分灌溉（对照）或分别以50%和25%的量进行灌溉。每4天评估一次每株植物的浆果数量和浆果重量。使用高效液相色谱法（HPLC）以相同的时间间隔评估浆果的花青素含量和组成。WD对两种评估基因型产量参数的影响因收获时间而异。在实验开始后的20 - 24天内，WD条件下植物的累计产量不低于对照植物。此外，与充分灌溉的植物相比，浆果积累的花青素多36 - 56%（取决于收获时间，为1.5 - 2.3倍）。我们的数据表明，在约20°C的稳定气温下，轻度或中度WD对花青素的生物合成和浆果产量有积极影响。
