Data_Sheet_1_Analyzing the Impact of Greenhouse Planting Strategy and Plant Architecture on Tomato Plant Physiology and Estimated Dry Matter.docx

Determine the level of significance of planting strategy and plant architecture and how they affect plant physiology and dry matter accumulation within greenhouses is essential to actual greenhouse plant management and breeding. We thus analyzed four planting strategies (plant spacing, furrow distance, row orientation, planting pattern) and eight different plant architectural traits (internode length, leaf azimuth angle, leaf elevation angle, leaf length, leaflet curve, leaflet elevation, leaflet number/area ratio, leaflet length/width ratio) with the same plant leaf area using a formerly developed functional–structural model for a Chinese Liaoshen-solar greenhouse and tomato plant, which used to simulate the plant physiology of light interception, temperature, stomatal conductance, photosynthesis, and dry matter. Our study led to the conclusion that the planting strategies have a more significant impact overall on plant radiation, temperature, photosynthesis, and dry matter compared to plant architecture changes. According to our findings, increasing the plant spacing will have the most significant impact to increase light interception. E–W orientation has better total light interception but yet weaker light uniformity. Changes in planting patterns have limited influence on the overall canopy physiology. Increasing the plant leaflet area by leaflet N/A ratio from what we could observe for a rose the total dry matter by 6.6%, which is significantly better than all the other plant architecture traits. An ideal tomato plant architecture which combined all the above optimal architectural traits was also designed to provide guidance on phenotypic traits selection of breeding process. The combined analysis approach described herein established the causal relationship between investigated traits, which could directly apply to provide management and breeding insights on other plant species with different solar greenhouse structures.

评估种植策略和植物构型对植物生理机能及温室植物干物质积累的影响程度，对于温室植物的实际管理与育种至关重要。因此，本研究采用先前开发的功能-结构模型，以中国辽宁太阳能温室和番茄植物为研究对象，利用该模型分析了四种种植策略（株距、沟距、行向、种植模式）以及八种不同的植物构型性状（节间长度、叶方位角、叶仰角、叶长、小叶曲线、小叶仰角、小叶数量/面积比、小叶长度/宽度比），并使用相同的植物叶面积进行模拟，以探究其对光截获、温度、气孔导度、光合作用和干物质积累的影响。研究结果表明，相较于植物构型的改变，种植策略对植物辐射、温度、光合作用和干物质积累的整体影响更为显著。根据研究结论，增加株距将对提高光截获产生最显著的影响。东西向行向具有更好的总光截获效果，但光均匀性较弱。种植模式的变化对整体冠层生理的影响有限。通过增加小叶面积（通过小叶N/A比观察到的玫瑰）可提高总干物质6.6%，这一效果显著优于其他植物构型性状。此外，还设计了一种理想的番茄植物构型，结合了上述所有最优构型性状，以期为育种过程中的表型性状选择提供指导。本研究所描述的联合分析方法建立了所研究性状之间的因果关系，可直接应用于为其他具有不同太阳能温室结构的植物物种提供管理与育种方面的见解。