Monder Marta Joanna
Department of Dendrological Collections, Polish Academy of Sciences Botanical Garden-Center for Biological Diversity Conservation in Powsin, Prawdziwka 2, 02-973 Warsaw, Poland.
Plants (Basel). 2021 Feb 28;10(3):457. doi: 10.3390/plants10030457.
Climate change affects the possibility of crop production and yield and disrupting the maintenance of crop biodiversity, including ornamentals. Warsaw is located in a temperate zone with mixed continental and oceanic climate influences. This research examines the response of once-blooming rambler roses to changing climate conditions in connection with their frost resistance and ornamental value. The 15 selected rambler rose cultivars were observed in the years 2000-2016 in the Polish Academy of Sciences Botanical Garden-Center for Biological Diversity Conservation in Powsin. Damage to shrubs caused by frost, the timing of bud break, leaf development, and initial, full, and final flowering were recorded. We show that changes in phenology and frost damage were the effect of weather conditions in the autumn-winter-spring period. Frost damage influenced the flowering and growth of plants in different ways, depending on the extent of required pruning. The cultivars most highly tolerant to frost damage were: "Lykkefund", "Polstjårnan", and "Semiplena". During the final years (2014-2016), due to mild winters, all of the studied rose cultivars could be used for a wider range of applications than previously (2000-2006 and 2009-2013). Their reintroduction helped to maintain biodiversity of old cultivars, which makes these roses a proposal for the lowlands of Central Europe.
气候变化影响作物生产和产量的可能性，并扰乱包括观赏植物在内的作物生物多样性的维持。华沙位于温带，受大陆性和海洋性气候的混合影响。本研究考察了一季开花的蔓生玫瑰在与抗冻性和观赏价值相关的气候变化条件下的反应。2000年至2016年期间，在位于波辛的波兰科学院植物园——生物多样性保护中心，对15个选定的蔓生玫瑰品种进行了观察。记录了霜冻对灌木造成的损害、芽萌发时间、叶片发育以及初花、盛花和终花时间。我们表明，物候变化和霜冻损害是秋冬春季节天气条件的结果。霜冻损害以不同方式影响植物的开花和生长，这取决于所需修剪的程度。对霜冻损害耐受性最强的品种有：“Lykkefund”、“Polstjårnan”和“Semiplena”。在最后几年（2014 - 2016年），由于冬季温和，所有研究的玫瑰品种都可用于比以前（2000 - 2006年和2009 - 2013年）更广泛的用途。它们的重新引入有助于维持老品种的生物多样性，这使得这些玫瑰成为中欧低地地区的一个选择。
