Iron and Zinc Content of Sorghum Genotypes and the Influence of Water Stress
نویسندگان
چکیده
To minimize injury due to water stress, plants have developed multiple strategies by which they resist. Hence, Fe and Zn were researched in relation the influence of drought stress, because, they are the most frequently minerals lacking in human diet especially in the semiarid regions such as Northeast Brazil. A large variability was observed in the zinc and iron content of 100 sorghum genotypes grown in environments without (WoWS) and with water stress (WthWS). A water stress effect was detected for Fe and Zn content, whose means were 31.94 and 29.54 and 22.02 and 22.40 mg/kg in WoWS and WthWS environments, respectively. Approximately 29% of the sorghum samples were classified as excellent sources of Fe and 47% of Zn. The genotypes; SC320, SC655, SC53 and SC414_12 showed great potential for use in biofortification projects. RESUMO – Para minimizar os danos causados pelo estresse hídrico, as plantas desenvolvem várias estratégias para resistência. Assim, Fe e Zn foram pesquisados em relação a influência do estresse hídrico, pois eles são os minerais que mais frequentemente faltam na dieta humana, especialmente nas regiões semi-áridas do Nordeste do Brasil. Uma grande variabilidade foi observada no conteúdo de ferro e zinco nos 100 genótipos de sorgo cultivadas em ambientes com e sem estresse hídrico. O efeito do estresse hídrico foi detectado para Fe e Zn, cujos níveis foram de 31,94 e 29,54 e 22,02 e 22,40 mg /kg no ambiente sem e com estresse hídrico, respectivamente. Cerca de 29% das amostras de sorgo foram classificados como excelentes fontes de Fe e 47% de Zn. Os genótipos; SC320, SC655, SC53 e SC414_12 mostraram grande potencial para uso em projetos de biofortificação.
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تاریخ انتشار 2016