Department of Horticultural Sciences, Faculty of Agricultural Sciences, University of Guilan, Guilan, Iran.
Department of Biosystem Engineering, Faculty of Agricultural Sciences, University of Guilan, Guilan, Iran.
BMC Plant Biol. 2024 Nov 5;24(1):1045. doi: 10.1186/s12870-024-05768-0.
The most widely cultivated species globally is Actinidia deliciosa cv. 'Hayward'. However, in recent years, consumers have shown greater demand for new varieties with novel flesh colour, flavour and appearance in international markets. To meet these expectations, one breeding study was started in 2016 at the University of Guilan in Iran to develop new kiwifruit cultivars with superior characteristics. In this breeding program, 201 female and 534 male hybrid genotypes were obtained from combinations of six different parents using the controlled cross-breeding technique. The evaluations were carried out over three consecutive stages. In the first stage, 201 female hybrid genotypes and control ('Golden') were evaluated based on 25 phenological and pomological traits. In the second stage, hybrids passed the desired threshold values in 7 key attributes were selected. Sensory testing in the next stage evaluated these selected hybrid genotypes more. As a result of the first stage, 30 hybrid genotypes with fruit weight (90 ≥ g) were selected. Then, in the second stage, 21 hybrids that showed acceptable dry matter, hue angle, flesh firmness, soluble solid content, acidity, and ascorbic acid were selected. Finally, 13 hybrid genotypes received high scores in sensory testing, and just two hybrid genotypes represented a 100% of novelty with positive texture. These genotypes were selected as potential cultivar candidates. In future studies, fruit yield, disease/pest resistance, and post-harvest performance trials of the 13 selected candidates will be evaluated at different sites. Thus, the ones that give the best results will be introduced to kiwifruit growers.
全球种植最广泛的品种是 Actinidia deliciosa cv. 'Hayward'。然而，近年来，国际市场对具有新颖果肉颜色、风味和外观的新品种的需求有所增加。为了满足这些期望，伊朗的拉夫桑詹大学于 2016 年开始了一项猕猴桃育种研究，以开发具有优良特性的新型猕猴桃品种。在这个育种计划中，利用控制杂交技术，从六个不同的亲本中获得了 201 个雌性和 534 个雄性杂交基因型。评估分为三个连续阶段进行。在第一阶段，对 201 个雌性杂交基因型和对照（'Golden'）进行了 25 个物候学和果实形态学特征的评估。在第二阶段，选择通过了 7 个关键属性的期望阈值的杂种。在下一阶段的感官测试中，对这些选择的杂交基因型进行了更详细的评估。在第一阶段，选择了 30 个果重（90≥g）的杂交基因型。然后，在第二阶段，选择了 21 个具有可接受的干物质、色调角、果肉硬度、可溶性固形物含量、酸度和抗坏血酸的杂种。最后，13 个杂交基因型在感官测试中获得了高分，只有两个杂交基因型具有 100%的新颖性和积极的质地。这些基因型被选为潜在的品种候选者。在未来的研究中，将在不同地点评估这 13 个候选品种的果实产量、抗病/虫害能力和采后表现试验。因此，将选择表现最好的品种介绍给猕猴桃种植者。
