Food Science and Technology Group, School of Chemical Engineering, UNSW, Sydney 2052, Australia.
Food Science and Technology Group, School of Chemical Engineering, UNSW, Sydney 2052, Australia.
Food Chem. 2016 Feb 15;193:62-8. doi: 10.1016/j.foodchem.2014.08.058. Epub 2014 Aug 23.
Aibika (Abelmoschus manihot L.) is believed to be a good source of micronutrients. However, although many varieties of aibika are commonly consumed in Papua New Guinea, their micronutrient content is unknown. Therefore, the mineral (Ca, Fe, K, Mg, Mn, Na, Zn & Cu), folate composition and the genetic variation of 23 aibika accessions from the collection at the National Agricultural Research Institute were studied over a 3year period to provide data for nutritional studies and to inform breeding programs. The data showed that aibika is, potentially, a crop of high nutritional value with the potential to boost the micronutrient status of local PNG communities. However, there were substantial differences in the micronutrient concentrations of the accessions from year to year and accessions that had the highest concentration of a particular mineral in 1year did not have the high concentrations in other years. Clusters determined using unweighted pair group method with arithmetic mean analysis (UPGMA) of the micronutrient contents differed in each of the 3years. Genetic analysis made using random amplification of polymorphic DNA and directed amplification of mini satellite region DNA placed the accessions into five groups. There was no correlation between these groups and leaf morphology, nor were there correlations with the clusters determined from the UPGMA analyses. There appears to be considerable interaction between genotype and environmental factors determining micronutrient composition and environmental factors may play a greater role than genotype in influencing micronutrient composition.
黄蜀葵（Abelmoschus manihot L.）被认为是微量营养素的良好来源。然而，尽管巴布亚新几内亚普遍食用多种黄蜀葵，但它们的微量营养素含量尚不清楚。因此，本研究对国家农业研究所收藏的 23 种黄蜀葵品种进行了为期 3 年的矿物质（Ca、Fe、K、Mg、Mn、Na、Zn 和 Cu）、叶酸组成和遗传变异研究，为营养研究提供数据，并为种植计划提供信息。数据表明，黄蜀葵具有很高的营养价值，有潜力提高当地巴布亚新几内亚社区的微量营养素水平。然而，各品种的微量营养素浓度在不同年份存在显著差异，在某一年份某种矿物质浓度最高的品种在其他年份的浓度不一定高。采用非加权组平均法（unweighted pair group method with arithmetic mean analysis，UPGMA）对微量营养素含量进行聚类分析，在 3 年内结果各不相同。采用随机扩增多态性 DNA（random amplification of polymorphic DNA，RAPD）和微卫星区域定向扩增（directed amplification of mini satellite region DNA，DAMD）进行遗传分析，将供试品种分为 5 组。这些组与叶片形态之间没有相关性，也与 UPGMA 分析确定的聚类没有相关性。决定微量营养素组成的基因型和环境因素之间似乎存在很大的相互作用，环境因素在影响微量营养素组成方面可能比基因型发挥更大的作用。
