Chinese chive usually develops an off-flavor after a short storage time. To explore effective ways to maintain the postharvest quality of Chinese chive, the effect of exogenous application of 6-benzylaminopurine（6-BA...Chinese chive usually develops an off-flavor after a short storage time. To explore effective ways to maintain the postharvest quality of Chinese chive, the effect of exogenous application of 6-benzylaminopurine（6-BA） on postharvest quality and antioxidant activity of chive was evaluated, and the mechanism of the physiological responses of chive to 6-BA treatment was explored. Chives were sprayed for 10 min with 100, 300, or 500 mg L–1 6-BA or with alkaline solution as the control, then stored at（2±1）°C with a relative humidity（RH） of 80–85%. We found that 300 mg L–1 6-BA significantly delayed yellowing and chlorophyll degradation, maintained the total phenolic and flavonoid content, and improved the activities of antioxidant enzymes, including superoxide dismutase（SOD）, catalase（CAT） and peroxidase（POD）. In conclusion, we identified exogenous application of 6-BA as an effective method for maintaining postharvest quality of Chinese chive. In addition, our finding that the activities of antioxidant enzymes increase in response to exogenous 6-BA provides new insights into the mechanism of cytokinin-based postharvest fresh-keeping.展开更多
The effect of plant growth regulator 6-BA and GA, which were sprayed during the filling stage of rice on senescence in the later stage was studied.The results showed that 6-BA and GA can slow down the falling of the c...The effect of plant growth regulator 6-BA and GA, which were sprayed during the filling stage of rice on senescence in the later stage was studied.The results showed that 6-BA and GA can slow down the falling of the chlorophyll and protein in the flag leaves, restrain the decrease of the POD activity and the accumulation of MDA.To a certain extend, 6-BA and GA can retard the senescence of functional leaves, which benefit the filling of rice, and improve the yield and quality. Key words:展开更多
基金financially supported by the Innovation Capacity Building Projects of Beijing Academy of Agriculturaland Forestry Sciences,China (KJCX20140205)the Innovation Capacity Building Projects of Beijing Academy of Agricultural and Forestry Sciences, China (KJCX20140408)
文摘Chinese chive usually develops an off-flavor after a short storage time. To explore effective ways to maintain the postharvest quality of Chinese chive, the effect of exogenous application of 6-benzylaminopurine（6-BA） on postharvest quality and antioxidant activity of chive was evaluated, and the mechanism of the physiological responses of chive to 6-BA treatment was explored. Chives were sprayed for 10 min with 100, 300, or 500 mg L–1 6-BA or with alkaline solution as the control, then stored at（2±1）°C with a relative humidity（RH） of 80–85%. We found that 300 mg L–1 6-BA significantly delayed yellowing and chlorophyll degradation, maintained the total phenolic and flavonoid content, and improved the activities of antioxidant enzymes, including superoxide dismutase（SOD）, catalase（CAT） and peroxidase（POD）. In conclusion, we identified exogenous application of 6-BA as an effective method for maintaining postharvest quality of Chinese chive. In addition, our finding that the activities of antioxidant enzymes increase in response to exogenous 6-BA provides new insights into the mechanism of cytokinin-based postharvest fresh-keeping.
文摘The effect of plant growth regulator 6-BA and GA, which were sprayed during the filling stage of rice on senescence in the later stage was studied.The results showed that 6-BA and GA can slow down the falling of the chlorophyll and protein in the flag leaves, restrain the decrease of the POD activity and the accumulation of MDA.To a certain extend, 6-BA and GA can retard the senescence of functional leaves, which benefit the filling of rice, and improve the yield and quality. Key words:
