Exogenous NO and H2O2 Induced Anthocyanin Accumulation of Different Colors Potatos
MA Ting-rui1，2，ZHANG Jin-wen1，2*，LIANG Hui-guang1，2*，LIU Yong-qiang3
1College of Agriculture，Gansu Agricultural University，Lanzhou 730070，Gansu，China|2Key Laboratory of Crop Genetic Resources & Germplasm Improvement in Gansu，Lanzhou 730070，Gansu，China|3Potato Institute，Gansu Academy of Agricultural Sciences，Lanzhou 730070，Gansu，China
Abstract：Taking different colors potatos（Solanum tuberosum L.）‘Longshu No.?8’，‘Longshu No.?7’，‘LC310-2’and‘Shandongcairou’as materials，this experiment studied on anthocyanin accumulation and related enzyme activities of potato tuber after treatment of water，0.1 mmol·L-1 SNP，0.25 mmol·L-1 H2O2，0.1 mmol·L-1 SNP+0.25 mmol·L-1 H2O2 in the period of starch．The results showed that after exogenous NO and H2O2 treatments，the anthocyanin contents in four geno-types potatos tuber’s skin and flesh were increased，and the activities of PAL，PPO and CHI were strengthened．The inductive effect is 0.1 mmol·L-1 SNP+0.25 mmol·L-1 H2O2＞0.25 mmol·L-1 H2O2＞0.1 mmol·L-1 SNP＞clear water（CK），indicating that NO and H2O2 treatments could accelerate anthocyanin synthesis and had additive effect.
