The germination success of the cut seeds of Eugenia pyriformis depends on their size and origin

Seeds of Eugenia pyriformis may produce several seedlings after cutting. Both the type of cutting and the size of the seed can determine the success in obtaining new seedlings. The size of the seeds is dependent on both the number of seeds per fruit and the conditions in which seeds develop, as well as the biometric characteristics of these seeds obtained from different regions and seasons. The seeds from each origin were evaluated in length, width, thickness, water content and dry mass, as well as the average number of seeds per fruit. From one of the regions, seeds were grouped according to the number of seeds per fruit and also according to their size, and then cut into two and four parts, and then analyzed for the fragments germination. The results demonstrated the high capacity of these seed fragments to produce new seedlings, but the capability reduces with the reduction in seed size. This size depends not only on the number of seeds per fruit, but also on the region and the period of the seed production.梨形番樱桃（Eugenia pyriformis）的种子经切割后可萌发形成多株实生苗。切割方式与种子尺寸均会影响新株培育的成功率。种子尺寸不仅取决于单果种子数与种子发育环境，还与不同地区、不同采收季下种子的生物计量特征相关。研究对各来源地的种子开展了长度、宽度、厚度、含水量、干重以及单果平均种子数的测定。其中某一来源地的种子，先按单果种子数与种子尺寸进行分组，随后将其切割为两等分及四等分，对切割后的种子片段开展萌发分析。结果表明，此类种子片段具备较高的新株再生能力，但该能力随种子尺寸减小而降低。而种子尺寸不仅受单果种子数影响，同时与种子采收的地区及生产季密切相关。