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首页> 外文期刊>Scientia horticulturae >Genetic diversity and distinctiveness in tomato (Solanum lycopersicum L.) landraces: The Italian case study of A pera Abruzzese'
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Genetic diversity and distinctiveness in tomato (Solanum lycopersicum L.) landraces: The Italian case study of A pera Abruzzese'

机译：番茄（Solanum lycopersicum L.）地方品种的遗传多样性和独特性：A pera Abruzzese的意大利案例研究

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摘要

To assess the intra-population genetic variability and draw criteria for distinctiveness, 25 accessions belonging to the Italian tomato landrace A pera Abruzzese' were analyzed with morphological and molecular descriptors and compared with the similar landraces Canestrino di Lucca' and Cuore di bue di Albenga'. Whereas intra-accession variation for qualitative morphological descriptors was low, inter-accession variability was high. Accessions from the Abruzzese' landrace could be separated into three groups according to the fruit shape, i.e. flat, round and obovoid. This variability was studied in detail by digital analysis of fruit sections using the software programme Tomato Analyzer. Four descriptors were effective in distinguishing the Abruzzese' round-fruited types from the Canestrino' and Albenga' controls. The molecular analysis, based on 11 polymorphic microsatellite markers, differentiated the Abruzzese' from the Canestrino' type, but was not able to separate the former from the Albenga' type. Although morphological and molecular descriptions did not correlate, the data presented provide a basis for distinguishing those Abruzzese' accessions that are unequivocally distinct from similar landraces cultivated in different regions. In addition to the specific objectives, the research represents a case study for the description of the variability that is often found within tomato landraces and an approach to identify (groups of) accessions that are eligible for distinction, protection and commercial exploitation.
机译：为了评估种群内的遗传变异性并为独特性绘制标准，对意大利番茄地方品种A pera Abruzzese'的25个种质进行了形态和分子描述符分析，并与相似的地方品种Canestrino di Lucca'和Cuore di bue di Albenga'进行了比较。 。尽管定性形态描述词的种质内变异低，种质间变异高。根据水果的形状，阿布鲁佐人种的种质可以分为三类，即扁平，圆形和倒卵形。通过使用番茄程序番茄分析仪对水果切片进行数字分析，详细研究了这种变异性。四个描述符可以有效地将Abruzzese的圆果类型与Canestrino和Albenga的控件区分开。分子分析基于11个多态性微卫星标记，区分了Abruzzese'和Canestrino'，但无法将前者和Albenga'区分。尽管形态和分子描述没有相关性，但所提供的数据为区分那些与不同地区栽培的类似地方品种明确区分的阿布鲁齐斯种质提供了基础。除特定目标外，该研究还提供了一个案例研究，用于描述番茄地方品种中经常发现的变异性，以及一种识别（组）适合区分，保护和商业开发的种质的方法。

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