Selection of experimental strawberry clones for fruit appearance attributes

Abstract The objective of this work was to carry out the morphological characterization of strawberry fruit of different genotypes, as well as to verify their postharvest conservation. Six commercial cultivars (Albion, Aromas, Dover, Festival, Pircinque, and San Andreas) and nine experimental clones (MDA01, MDA19, MDA22, MDA23, MCA89, MCA94, MFA443, MOGSC468, and MFA443PR) were evaluated. Fruit were produced on semi-hydroponic gutters in protected cultivation and classified according to size, shape, color, brightness, achene position, pulp color, “heart” color, fruit cavity, and sepal position. For the postharvest analysis of fruit, the loss of mass and the appearance of fruit during ten days of storage were determined. The evaluated genotypes show a high similarity to each other regarding morphological characterization. MCA89 and 'Pircinque' are the most divergent genotypes in relation to the others. There is an association between the characteristics large cavity, reniform shape, and medium cavity, which contributes to the indirect selection of desirable characters. On the tenth day of storage, the MDA01, MDA19, MCA89, MFA443, and 'Dover' genotypes still show acceptable conditions for commercialization.

摘要：本研究旨在对不同基因型草莓果实进行形态学表征，并验证其采后贮藏特性。本试验共评估了6个商业栽培品种（Albion、Aromas、Dover、Festival、Pircinque及San Andreas）与9个实验无性系（MDA01、MDA19、MDA22、MDA23、MCA89、MCA94、MFA443、MOGSC468及MFA443PR）。供试果实均于设施栽培的半水培槽中生产，并按果实大小、形状、颜色、光泽度、瘦果（achene）着生位置、果肉颜色、果心颜色、果腔及萼片着生位置进行分类。针对果实采后分析，本研究测定了10天贮藏期内的质量损失及果实外观变化情况。结果表明，供试基因型在形态学表征上整体相似度较高，其中MCA89与'Pircinque'为与其他基因型差异最显著的材料。大果腔、肾形果与中等果腔这几个性状间存在显著关联，可为优良性状的间接选择提供参考。在贮藏至第10天时，MDA01、MDA19、MCA89、MFA443及'Dover'基因型的果实仍具备商业化销售的合格品质。