华北农学报Issue(5)：186-192,7.DOI:10.7668/hbnxb.2014.05.032
嫁接对铜胁迫下甜瓜幼苗光合特性与矿质元素吸收的影响
Effects of Grafting on Photosynthetic Characteristics and Mineral Elements of Melon Seedlings under Copper Stress
摘要
Abstract
The effects of grafting on photosynthetic characteristics and mineral elements of melon seedlings un -der copper stress in this study .Pumpkin Jingxinzhen NO .3 was carried out as stock ,melon IVF09 and muskmelon IVF117 as cion,and ungrafted seedlings as control .Here,we found that ,under copper stress ,the biomass of melon seedlings was decreased ,photosynthetic characteristics was inhibited and the absorption of mineral elements balance were destructed .But under the same stress conditions , the biomass and photosyntheic pigment content of grafted seedings were greater than that of ungrafted seedings .The net photosynthetic rate (Pn),transpiration rate (Tr), stomatal conductance (Gs) and intercellular CO2 concentration (Ci) were significantly higher than that of ungrafted seedlings,but Ls was lower .Grafting to improve the absorption of mineral elements ,effectively increase the content of K,P,Na,reduce the content of Cu ,Cu content of IVF09 grafting seedlings in leaf was significantly lower than that ungrafted seedlings under the 800 μmol/L Cu2+stress,since only that in 70.11%,the IVF117 grafting seedlings was significantly lower than that of ungrafted seedlings under 400 μmol/L Cu2+stress,since 86.61%.The test re-sults showed that the grafting reduced photosynthetic characteristics and mineral elements absorption inhibitory effect on melon seedlings under copper stress ,relieve the toxic effect on copper stress of melon seedlings .关键词
甜瓜/嫁接/铜胁迫/光合特性/矿质元素Key words
Melon/Grafting/Copper stress/Photosynthetic characteristics/Mineral elements分类
农业科技引用本文复制引用
谭明明,贺忠群,郑万刚..嫁接对铜胁迫下甜瓜幼苗光合特性与矿质元素吸收的影响[J].华北农学报,2014,(5):186-192,7.基金项目
四川省教育厅项目 （）
