Table_2.PDF

Since seed reserves can influence seed germination, the quantitative and qualitative differences in seed reserves may relate to the germination characteristics of species. The purpose of our study was to evaluate the correlation between germination and seed reserves, as well as their mobilization during germination of six grassland species (Chloris virgata, Kochia scoparia, Lespedeza hedysaroides, Astragalus adsurgens, Leonurus artemisia, and Dracocephalum moldavica) and compare the results with domesticated species. We measured starch, protein, and fat content in dry seeds and the initial absorption of water during imbibition. Starch, soluble protein, fat, and soluble sugar content also were determined at five stages during germination. Starch, protein, and fat reserves in dry seeds were not significantly correlated with germination percentage and rate (speed), but soluble sugar and soluble protein contents at different germination stages were positively significantly correlated with germination rate for the six species. Starch was mainly used during seed imbibition, and soluble protein was used from the imbibition stage to the highest germination stage. Fat content for all species remained relatively constant throughout germination for six species, regardless of the proportion of other seed reserves in the seeds. Our results for fat utilization differ from those obtained for cultivated grasses and legumes. These results provide new insight on the role of seed reserves as energy resources in germination for wild species.

鉴于种子储备量可对种子发芽产生影响，种子储备量在数量和质量上的差异可能与其物种的发芽特性相关。本研究旨在评估发芽与种子储备量及其在六种草原物种（如 Chloris virgata、Kochia scoparia、Lespedeza hedysaroides、Astragalus adsurgens、Leonurus artemisia 和 Dracocephalum moldavica）发芽过程中的动员之间的相关性，并将研究结果与驯化物种进行比较。我们对干燥种子中的淀粉、蛋白质和脂肪含量进行了测量，并记录了吸水过程中的初始吸水。在发芽的五阶段中，还确定了淀粉、可溶性蛋白质、脂肪和可溶性糖的含量。干燥种子中的淀粉、蛋白质和脂肪储备与发芽百分比和速率（速度）之间没有显著相关性，但在不同发芽阶段的可溶性糖和可溶性蛋白质含量与六种物种的发芽速率呈正显著相关。淀粉主要在种子吸水阶段被利用，而可溶性蛋白质则从吸水阶段至最高发芽阶段被持续利用。对于六种物种，在整个发芽过程中，脂肪含量相对恒定，无论种子中其他储备量的比例如何。我们的脂肪利用结果与已获得的家养禾本科植物和豆科植物的结果不同。这些结果为野生物种在发芽过程中种子储备作为能量资源的作用提供了新的见解。