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Genetic differentiation of Slovenian sweet potato varieties (Ipomoea batatas) and effect of different growing media on their agronomic and nutritional traits

机译:斯洛文尼亚红薯品种(Ipomoea batatas)的遗传分化以及不同生长培养基对其农艺和营养性状的影响

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The objectives of the present study were firstly to analyse the genetic relatedness among three Slovenian sweet potato varieties; and secondly to assess the effects of different growing media on selected agronomic and nutritional traits of these varieties. Tubers of three varieties (Lu?ka, Janja, Martina) with different skin/flesh colour were produced in planters under glasshouse conditions in five different growing media (perlite, peat, expanded clay, vermiculite, garden soil) from prior raised seedlings. Genetic analysis was performed using a set of eight single sequence repeats markers. According to Nei’s genetic distance and pairwise population Fst analysis, the most related varieties are Janja and Martina; in contrast, Lu?ka and Martina show the weakest genetic relationships. The following agronomic traits were evaluated: vine length, thickness of vine-base, number of branches, weight of above ground part, number of leaves plant–1, number of tubers plant–1 and tubers weight plant –1 . Between nutritional traits total phenolic content (TPC), antioxidant potential (AOP) and ascorbic acid content (AA) were determined in the range: 36.2 to 65.1 mg gallic acid equivalent 100 g –1 fresh weight, 0.18 to 0.56 mg Trolox equivalents g –1 FW and 13.7 to 23.5 mg 100 g –1 FW, respectively. Significant interactions of growing media (factor A) × variety (factor B) were observed for thickness of vine-base, weight of above ground part, AOP, TPC and AA. Overall, results showed variation in varieties response to growing media. Growing media provide a discriminant classification of the sweet potato varieties according to their agronomic and nutritional traits.
机译:本研究的目的是首先分析三种斯洛文尼亚红薯品种的遗传相关性;其次,评估不同生长介质对这些品种所选农艺和营养性状的影响。在温室条件下,在播种机中,在五个不同生长介质(珍珠岩,泥煤,膨胀粘土,ver石,花园土壤)中,从先前育苗中培育出具有不同皮肤/肤色的三个品种(Lu?ka,Janja,Martina)的块茎。使用一组八个单序列重复标记进行遗传分析。根据Nei的遗传距离和成对种群Fst分析,最相关的品种是Janja和Martina;相比之下,卢卡(Lu?ka)和玛蒂娜(Martina)的遗传关系最弱。对以下农艺性状进行了评估:葡萄树长度,葡萄树基部厚度,枝条数,地上部分重量,叶片植物数-1,块茎植物数-1和块茎植物数-1。在营养性状之间的总酚含量(TPC),抗氧化潜力(AOP)和抗坏血酸含量(AA)的确定范围为:36.2至65.1 mg没食子酸当量100 g –1鲜重,0.18至0.56 mg Trolox当量g – 1 FW和13.7至23.5 mg 100 g –1 FW。观察到生长介质(因子A)×品种(因子B)之间的显着相互作用,包括葡萄基厚度,地上部分重量,AOP,TPC和AA。总体而言,结果表明品种对生长培养基的反应存在差异。生长介质根据其农艺和营养特性对甘薯品种进行区分。

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