The concentration characteristics of Cd2+ in 9 pumpkin (Cucurbita moschata Duch.) seedlings
CHEN Bihua
LI Qingfei
ZHOU Junguo
LI Xinzheng
WANG Guangyin
SONG Xiaoke
Abstract：The research explored effects of Cd2+ stress (5 mg· L-1) on the seed germination,seedling growth and accumulation of Cd2+ in different organs using the ICP-AES technology.The results showed that the seed germination,seedling growth of ‘360-3’ ‘Yanzhen No.1 ’ ‘Baimi No.l’ ‘ 112-2’ and ‘041-1’ was not significantly affected by Cd2+ stress.The absorption characteristics of Cd2+ in different organs of pumpkin ranked as roots＞stems＞cotyledons.The transfer coefficient ofCd2+ in stems and cotyledons of ‘360-3’ ‘Yanzhen No.1’ ‘Baimi No.1’ ‘ 112-2’ and ‘041-1’ was lower than 0.1 and 0.01,respectively.The enrichment characteristics of Cd2+ in different organs of pumpkin also ranked as roots＞ stems＞cotyledons.The enrichment coefficient of cadmium in stems and cotyledons of the above-mentioned materials were lower than 2.75 and 0.30,respectively.While in the root,the enrichment coefficient of the lowest was 35.Therefore,comprehensive analysis shows that ‘ 360-3’ ‘Yanzhen No.1’ ‘ Baimi No.1’ ‘ 112-2’ and ‘ 041-1’ have strong tolerance towards heavy metal Cd2+ and could be further researched as Cd2+-tolerant stocks.
Keywords：PumpkinCadmium stressTransfer coefficientEnrichment coefficient
Publication Date：2018-05-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 11-15 )