Background and Aims Plants can propagate generatively and vegetatively. The type of propagation and the resulting propagule can influence the growth of the plants, such as plant architectural development and biomass allocation pattern. Potato is a species that can reproduce through both types of propagation: through true botanical seed and seed tuber. The consequences of propagule type on the plant architectural development and biomass partitioning in potato are not well known. We quantified architectural differences between plants grown from these two types of propagules from the same genotype, explicitly analysing branching dynamics above-ground and below-ground, and relate these differences to biomass allocation patterns. Methods A greenhouse experiment was conducted, using potato plants of the same genotype but grown from two types of propagules: true seed and seed tuber from a true-seed grown plant (seedling tuber). Architectural traits and biomass allocation to different organs were quantified at four developmental stages. Differences between true-seed-grown and seedling-tuber-grown plants were compared at whole-plant level, and at the level of individual stems and branches including their number, size and location on the plant. Key Results A more branched and compact architecture was produced in true-seed-grown plants, compared to seedling-tuber-grown plants. The architectural differences between plants grown from true seed and seedling tuber gradually appeared and were mainly attributed to the divergent temporal-spatial distribution of lateral branches above- and below-ground on the main axis. The continual production of branches in true-seed-grown plants indicated their indeterminate growth habit, which was also reflected in a slower shift of biomass allocation from above-ground to below-ground branches, while the opposite trend was found in seedling-tuber-grown plants. Conclusions In true-seed-grown plants, lateral branching was stronger and determined whole-plant architecture as well as plant function with regard to light interception and biomass production, compared with seedling-tuber-grown plants. This different role of branching indicates that a difference in preference between clonal and sexual reproduction may exist. The divergent branching behaviours in true-seed-grown and seedling-tuber-grown plants may be regulated by the different intensity of apical dominance, which suggests that the branching control can depend on propagule type.

中文翻译：

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量化由两种繁殖体生长的杂交马铃薯（Solanum tuberosum）植物之间植物结构发育的差异

背景和目标 植物可以有性繁殖和无性繁殖。繁殖类型和产生的繁殖体可以影响植物的生长，例如植物结构发育和生物量分配模式。马铃薯是一种可以通过两种繁殖方式繁殖的物种：通过真正的植物种子和种子块茎。繁殖体类型对马铃薯植株结构发育和生物量分配的影响尚不清楚。我们量化了由同一基因型的这两种繁殖体生长的植物之间的结构差异，明确分析了地上和地下的分支动态，并将这些差异与生物量分配模式联系起来。方法进行温室实验，使用相同基因型但由两种繁殖体生长的马铃薯植物：真种子和来自真种子生长植物的种子块茎（幼苗块茎）。在四个发育阶段量化了不同器官的结构特征和生物量分配。在整个植物水平以及单个茎和分枝水平（包括它们的数量、大小和在植物上的位置）上比较了真正种子生长的植物和幼苗块茎生长的植物之间的差异。主要结果 与幼苗块茎生长的植物相比，真正的种子生长的植物产生了更多分枝和紧凑的结构。真种子和幼苗块茎植物的体型差异逐渐显现，主要归因于主轴地上、地下侧枝的时空分布差异。真正种子生长的植物中枝条的持续产生表明其生长习性的不确定性，这也反映在生物量分配从地上枝条到地下枝条的缓慢转移上，而在幼苗-块茎中发现了相反的趋势。种植的植物。结论 与幼苗块茎生长的植物相比，真正的种子生长的植物的侧枝更强，并决定了整个植物的结构以及植物在光拦截和生物量生产方面的功能。分支的这种不同作用表明克隆繁殖和有性繁殖之间可能存在偏好差异。真种子生长的植物和幼苗块茎生长的植物中不同的分枝行为可能受到不同强度的顶端优势的调节，这表明分枝控制可能取决于繁殖体类型。