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首页> 外文期刊>African Journal of Food, Agriculture, Nutrition and Development >Variation in macro-elements and protein contents of roselle ( Hibiscus sabdariffa L.) from Niger
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Variation in macro-elements and protein contents of roselle ( Hibiscus sabdariffa L.) from Niger

机译：尼日尔玫瑰茄（Hiscus sabdariffa L.）宏观元素和蛋白质含量的变化

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Roselle is an important part of the human diet in many countries, particularly in the Sahel zone of West Africa. The leaves of Roselle are consumed as a green vegetable and in sauce. Nevertheless, little attention has been paid to their nutrient composition at different stages of plant growth. Therefore, the experiment was carried out under rainfall conditions from July to September 2006 at the experimental station of the Agrhymet Regional Centre in Niamey (Niger). The contents of Ca, K, Mg, P and protein in leaves of three ecotypes (A3, A7 and A9) were determined at stages I, II and III, corresponding, respectively to vegetative, flowering and mature stages. The experimental design was a randomized complete block with four replicates and one variable (ecotype). For ecotype A7, the protein content of the leaves decreased significantly (p<0.05) between stage I and II, than remained relatively constant up to stage III. In contrast for A3 and A9, protein content in leaves decreased significantly (p<0.05) between stage II and III. From stage I to III, the decrease of protein content in leaves was 41% for ecotype A3, 50% for A7 and 66% for A9. For all ecotypes, the P content of the leaves decreased progressively during plant growth. For A7 and A9, the reduction in P content from stage I to II and from II to III was about the same, namely 30%. However, for ecotype A3, the decrease was greater, respectively, 37% and 46%. The Mg content of the leaves was relatively constant for all three ecotypes at a given stage of plant development. However, the Mg content of the leaves decreased significantly (p<0.05) from flowering to maturity: 28% for A3, 23% for A9 and 14% for A7. For the three ecotypes, the Ca content of the leaves remained relatively constant from stage I to II, than increased markedly from stage II to III, to about 150% for A7, 85% for A3 and 50% for A9. From stage I to II, the leaves’ K content decreased significantly for all three ecotypes, about 67% for A9, 62% for A3 and 44% for A7. The data indicated that Roselle can contribute useful amounts of essential nutrients such as Ca K, Mg, N and P mainly at vegetative stage in the diets of people who inhabit the western Sahel. Keys words: Roselle, macronutrient, leaves, stage, Niger
机译：玫瑰茄在许多国家，尤其是在西非萨赫勒地区，是人类饮食的重要组成部分。玫瑰茄的叶子作为绿色蔬菜和酱汁食用。然而，在植物生长的不同阶段对其营养成分的关注很少。因此，该实验是在2006年7月至2006年9月的降雨条件下，在尼亚美（尼日尔）Agrhymet区域中心的实验站进行的。在I，II和III阶段分别确定了分别处于营养，开花和成熟阶段的三种生态型（A3，A7和A9）叶片中Ca，K，Mg，P和蛋白质的含量。实验设计是具有四个重复和一个变量（生态型）的随机完整块。对于生态型A7，在阶段I和阶段II之间，叶片的蛋白质含量显着降低（p <0.05），而在阶段III之前保持相对恒定。相比之下，对于A3和A9，在第二阶段和第三阶段之间，叶片中的蛋白质含量显着降低（p <0.05）。从阶段I到阶段III，生态型A3的叶片中蛋白质含量下降为41％，A7为50％，A9为66％。对于所有生态型，叶片的磷含量在植物生长过程中逐渐降低。对于A7和A9，从阶段I至阶段II和阶段II至阶段III的P含量降低大致相同，即30％。但是，对于生态型A3，下降幅度更大，分别为37％和46％。在植物发育的给定阶段，所有三种生态型的叶片中Mg含量相对恒定。然而，从开花到成熟，叶片的Mg含量显着降低（p <0.05）：A3为28％，A9为23％，A7为14％。对于这三种生态型，叶片的钙含量从阶段I到阶段II保持相对恒定，而从阶段II到阶段III显着增加，至A7约为150％，A3约为85％，A9约为50％。从第一阶段到第二阶段，三种生态型叶片的钾含量均显着下降，A9约为67％，A3约为62％，A7约为44％。数据表明，Roselle可以在居住于萨赫勒西部的人们的饮食中主要在营养阶段贡献有用量的必需营养素，例如Ca K，Mg，N和P。关键词：玫瑰茄，大量营养素，叶片，阶段，尼日尔

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