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首页> 外文期刊>Australian Journal of Botany >Carbohydrate mobilisation in germinating seed of Enterolobium contortisiliquum and Peltophorum dubium (Fabaceae), two tropical trees used for restoration.
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Carbohydrate mobilisation in germinating seed of Enterolobium contortisiliquum and Peltophorum dubium (Fabaceae), two tropical trees used for restoration.

机译：动员两株热带风树Controtisiliquum和Peltophorum dubium（Fabaceae）的发芽种子中的碳水化合物动员。

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摘要

Enterolobium contortisiliquum (Vell.) Morong. and Peltophorum dubium (Spreng.) are two leguminous species native to Brazil that are frequently used to restore degraded areas. Seed of E. contortisiliquum are exalbuminous, whereas seed of P. dubium have a mucilaginous endosperm and both are orthodox, dormant and have a water-impermeable seed coat. There is little information about the dynamics of their germination and understanding this process is important for propagation, conservation and satisfactory practices for restoration of degraded areas. Thus, in this study we evaluated and compared the carbohydrate mobilisation of the seed of both species during germination and early seedling development. Data obtained showed differences in the composition and in the mobilisation of the storage carbohydrates in the studied species. Whereas the main storage of the E. contortisiliquum embryo is starch, the main reserve found in P. dubium is the galactomannan stored in the endosperm. The carbohydrates first hydrolysed in both species are raffinose family oligosaccharides that are used in the embryo development during germination. Starch found in cotyledons of E. contortisiliquum or accumulated after galactomannan degradation in the embryo of P. dubium is not used during germination and early seedling growth in either species.
机译：麻风肠杆菌（Moron）。 Peltophorum dubium和Peltophorum dubium（Spreng。）是巴西本土的两个豆科物种，经常用于恢复退化地区。旋毛虫的种子是无交配的，而硬皮疫霉的种子具有粘液的胚乳，并且都是正统的，休眠的并且具有不透水的种皮。关于其萌发动态的信息很少，并且了解这一过程对于繁殖，保护和恢复退化地区的令人满意的做法很重要。因此，在这项研究中，我们评估并比较了种子在发芽和幼苗早期发育过程中碳水化合物的动员情况。获得的数据显示了所研究物种的组成和储藏碳水化合物的动员方面的差异。 Contortisiliquum胚胎的主要贮藏是淀粉，而D. dubium中发现的主要贮藏是胚乳中的半乳甘露聚糖。在两个物种中首先水解的碳水化合物是棉子糖家族寡糖，其在发芽过程中用于胚胎发育。在任何一种物种的发芽和幼苗早期生长过程中，均不使用在转化大肠杆菌的子叶中发现的淀粉或半乳甘露聚糖降解后积累的淀粉。

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