Abstract
The selenium accumulation characteristics of Solanum nigrum with different ploidy were studied by the pot experiment, and the biomass, selenium content and selenium accumulation of diploid (Solanum photeinocarpum), tetraploid (Solanum photeinocarpum) and hexaploid (Solanum nigrum) plants were determined, the results showed that there was a difference between the biomass and selenium content of three kinds of ploidy plants of S. nigrum. The biomass of various organs and shoots of hexaploid S. nigrum plants was significantly higher than that of tetraploid and diploid plants. In terms of selenium content and selenium accumulation, the hexaploid plants had the highest selenium content and selenium accumulation in stems, leaves and shoots. After comprehensive comparison, the hexaploid S. nigrum has large biomass and strong selenium-enriching ability, so it can be used as an excellent plant material for soil selenium absorption and transformation.
Highlights
Selenium (Se) is an essential trace element in human body, and its physiological functions mainly include antioxidant, cardiovascular protection, resistance to toxic substances and inhibition of cancer cells [1], low levels of selenium in the body may be one of the causes of some major diseases in human beings [2]
Selenium cannot be synthesized by human body itself, but it can be absorbed through food [3], in order to meet the demand of human body for selenium element, selenium application in soil or spraying selenium on leaves are often used to convert inorganic selenium into organic selenium by plants which have become the main source of selenium supplementation through diet such as crops or vegetables [4,5]
Studies have shown that there are significant differences between polyploid plants and diploid plants in external morphology, physiology, biochemistry and heredity [12,13], the purpose of this paper is to study the selenium enrichment characteristics of different ploidy S. nigrum, so as to provide theoretical basis for the effective utilization of selenium in it
Summary
Selenium (Se) is an essential trace element in human body, and its physiological functions mainly include antioxidant, cardiovascular protection, resistance to toxic substances and inhibition of cancer cells [1], low levels of selenium in the body may be one of the causes of some major diseases in human beings [2]. As a unique plants in China, Solanum nigrum is distributed all over the country and is mostly wild in field houses and roadside areas [6], studies in recent years have found that it has important medicinal and edible value [7,8], in addition, some studies have shown that under the condition of suitable soil selenium content, S. nigrum can grow normally and has high selenium enrichment capacity [9]. Studies have shown that there are significant differences between polyploid plants and diploid plants in external morphology, physiology, biochemistry and heredity [12,13], the purpose of this paper is to study the selenium enrichment characteristics of different ploidy S. nigrum, so as to provide theoretical basis for the effective utilization of selenium in it
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