摘要
以新疆阿克苏地区水心(冰糖心)富士苹果为试材,分析讨论了果实碳水化合物、矿质元素和活性氧代谢与水心发生的关系。结果表明:果实可溶性固形物(SSC)含量越高,水心指数越高,呈显著正相关(P<0.05);而单果质量、果实纵横径比及L、b*、h°值与水心果率和水心指数相关不显著;进一步分析发现,与正常果实和组织相比,水心果实和组织中,山梨醇和蔗糖含量均显著升高,尤其是山梨醇含量,分别是正常果实和组织的2.19倍和2.86倍,果糖和葡萄糖含量相对较低;此外,水心组织中K和B含量显著高于正常组织,而Ca、Zn及Fe含量则显著降低;同时,水心果实和组织中超氧阴离子和过氧化氢含量较正常果实和组织显著升高,分别高282.39%、68.17%和12.6%、107.62%;POD、SOD和CAT等抗氧化酶活性显著降低,MDA含量和相对电导率显著升高,膜质过氧化水平严重。
The relationships of carbohydrate,mineral content and reactive oxygen species metabolism and watercore occurred of Fuji apple from Aksu,Xinjiang were investigated. The results showed that the watercore incidence positively correlated with soluble solids content（P〈 0.05）,but it did not show significant correlation with fruit weight,aspect ratio,L value,b＊ value,h° value. Furthermore,higher sorbitol,sucrose and lower fructose,glucose concentrations were found in watercore fruits and tissues,especially for sorbitol,which is 2.19 times and 2.86 times of watercore-free fruits and tissues respectively. Moreover,higher accumulation of K and B and lower content of Ca,Zn and Fe were involved with watercore incidence. Meanwhile,in the watercored fruit and tissue,superoxide radical and H2O2 content were significantly higher than those in watercore-free apples,which were 282.39%,68.17% and 12.6%,107.62% higher for fruits and tissues,respectively. POD,SOD and CAT activities were significantly decreased in watercore fruits and tissues. MDA content and relative electrolytic conductivity were significantly increased,indicating the serious membrane peroxidation.
出处
《园艺学报》
CAS
CSCD
北大核心
2015年第10期2023-2030,共8页
Acta Horticulturae Sinica
基金
中国农业科学院科技创新工程项目(CAAS-ASTIP)
关键词
苹果
水心
碳水化合物
矿质元素
活性氧
apple
watercore
carbohydrate
mineral element
reactive oxygen species
