摘要
采用电感耦合等离子体原子发射光谱法(ICP-AES),研究了5 mg·L^(-1)Cd^(2+)处理对9份中国南瓜种子萌发、幼苗生长及其不同器官中Cd^(2+)积累的影响。结果表明,‘360-3’盐砧1号‘‘百蜜1号’‘112-2’‘041-1’的种子萌发、幼苗生长均未造成显著影响。不同器官对Cd^(2+)的吸收能力表现为根系>茎>子叶,‘360-3’‘盐砧1号’‘百蜜1号’‘112-2’‘041-1’的茎中转移系数都在0.1以下,子叶中转移系数都在0.01以下;不同器官对Cd^(2+)的富集特征表现为:根系>茎>子叶;‘360-3’‘盐砧1号’‘百蜜1号’‘112-2’‘041-1’的茎中富集系数均在2.75以下,子叶中富集系数均在0.3以下,而根中富集系数均在35以上。所以,‘360-3’‘盐砧1号’‘百蜜1号’‘112-2’‘041-1’对重金属镉有较强的耐受性,可以作为耐镉砧木种质资源进一步研究。
The research explored effects of Cd^2＋ stress（5 mg·L^-1） on the seed germination, seedling growth and accumulation of Cd^2＋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.1＇＇112-2＇and＇041-1＇was not significantly affected by Cd^2＋stress. The absorption characteristics of Cd^2＋in different organs of pumpkin ranked as rootsstemscotyledons. The transfer coefficient of Cd^2＋in stems and cotyledons of＇360-3＇＇Yanzhen No. 1＇＇Baimi No. 1＇＇112-2＇and＇041-1＇was lower than0.1 and 0.01, respectively. The enrichment characteristics of Cd^2＋in different organs of pumpkin also ranked as rootsstemscotyledons. 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 Cd^2＋and could be further researched as Cd^（^（2＋））-tolerant stocks.
作者
陈碧华
李庆飞
周俊国
李新峥
王广印
宋小可
CHEN Bihua, LI Qingfei, ZHOU Junguo, LI Xinzheng, WANG Guangyin, SONG Xiaoke(College of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, Xinxiang 453003, Henan, Chin)
出处
《中国瓜菜》
CAS
北大核心
2018年第5期11-15,共5页
China Cucurbits And Vegetables
基金
河南省基础与前沿技术研究计划项目(162300410145)
河南省高等学校重点科研项目(15A210006)
河南省大宗蔬菜产业体系建设项目(S2010-03-G04)
关键词
中国南瓜
镉处理
富集系数
转移系数
Pumpkin
Cadmium stress
Transfer coefficient
Enrichment coefficient
