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首页> 外文期刊>Genetika >Genotypic variability of root and shoot traits of bread wheat (Triticum aestivum L.) at seedling stage
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Genotypic variability of root and shoot traits of bread wheat (Triticum aestivum L.) at seedling stage

机译：幼苗阶段的面包小麦（Triticum Aestivum L.）根系和射击性状的基因型变异性

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The evaluation of the embryonic root and stem of bread wheat (Triticum aestivum L.) in the early stage of development (seedling stage) can be a powerful tool in wheat breeding aimed at obtaining progenies with a greater early vigour. It is revealed that genotypes with faster early vigour have produced higher biomass and grain yield. In this study, the evaluation of traits of the embryonic root and the embryonic stem of 101 bread wheat genotypes was preformed at the 10-day old seedlings. The following eight morphological traits of roots and stems were analysed: primary root length, branching interval, the number of roots, total length of lateral roots, angle of seminal roots, stem length, root dry weight and the stem dry weight. Analysed lateral roots included seminal roots. The greatest, i.e. the smallest variability of observed traits was detected in the branching interval, i.e. the stem length, respectively. The highest positive correlation was determined between the primary root length and the total length of lateral roots. The cluster analysis, based on observed traits, shows that genotypes were clearly divided into two main clusters, A and B. The two clusters essentially differed from each other in the values of the following traits: primary root length, total length of lateral roots, root dry weight, stem dry weight and the stem length. Genotypes with shorter primary and lateral roots, lower root and stem dry weight and a shorter stem were grouped in the cluster B. On the other hand, the cluster A encompassed genotypes with values of these traits above or around the average. The values of the remaining analysed traits: the angle of seminal roots, the number of lateral roots and the branching interval varied greatly between obtained clusters. The cluster analysis showed the homogeneity of genotypes originating from Serbia and the region; their values of the root and stem length and weight were mostly around and below the average. However, the values of the angle of seminal roots, number of lateral roots and the branching interval were above average.
机译：在发育早期阶段（幼苗阶段）的胚胎根和面包小麦（Triticum aestivum L.）的评价可以是小麦滋生的强大工具，旨在获得更大的活力的产后。据揭示，具有更快的活力的基因型产生了更高的生物量和籽粒产量。在这项研究中，在10天的幼苗上预先形成了胚胎根系的性状和101个面包小麦基因型的胚胎茎的评价。分析了以下八个根源和茎的形态学性状：原母根长，分支间隔，根部数，侧根的总长度，精细的角度，茎长，根系干重和干燥的干重。分析的外侧根包括精髓根。最大的，即观察到的特性的最小变异性分别在分支间隔中检测，即茎长。在原始根长度和侧面的总长度之间确定最高的正相关性。基于观察的特征的聚类分析表明，基因型被清楚地分为两个主簇，A和B.两个簇在以下特征的值中彼此不同：原始根长，侧根的总长度，根系干重，茎干重和茎长。在簇B中将初级和侧根，下根和干重和较短的茎较短的基因型，较低的茎，群体A包含基因型，其具有上方或围绕平均值的这些性状的值。剩余分析的特征的值：精开出的角度，横向根部的数量和分支间隔在获得的簇之间变化大大变化。聚类分析显示源自塞尔维亚和该地区的基因型的均匀性;它们的根和茎长和重量的值大部分大于和低于平均值。然而，半根角的值，横向根数和分支间隔的值高于平均水平。

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