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正如形形色色变幻无穷的植物界一样,即使是同一种植物的同一批种子,其种粒的大小也不一致。这些参差不齐的种子的活力状况是很复杂的,近年来已引起了不少种子工作者的兴趣,研究报告甚多。例如 Piatt指出,山桃花心木(Swietenia maho—gani)的大粒种子的发芽率是小粒种子的三
As with all kinds of ever-changing plant kingdoms, even with the same batch of seeds of the same plant, the size of their seeds is not the same. The vigor of these uneven seeds is very complicated. In recent years, many seed workers have been attracted their interest and many reports have been published. Piatt, for example, notes that the germination rate of large seeds of Swietenia maho-gani is three