不同钾水平对茄子茄碱含量和分配的影响

采用盆栽试验的方式,就不同钾水平对盆栽茄子生物量和茄碱含量、累积量及分配的影响进行研究,以期从植物营养角度控制茄子茄碱的形成和累积,达到改善茄子口感和风味品质的目的。结果表明,施用钾肥后茄子各器官以果实增产效果最为明显。施钾处理可使茄子果实中茄碱含量显著降低,果蒂、根、茎、花等器官的茄碱含量总体上也表现为降低。两个采收期茄子果实茄碱累积量均在施用钾肥后升高,以中量和高量钾处理影响最大,而果蒂、茎、花的茄碱累积量呈下降趋势。茄子果实中茄碱分配最多,其次为叶片,花瓣分配最少。两个采收期果蒂、花等器官茄碱分配系数随钾水平增加而降低。施用钾肥能降低果实茄碱含量,但对茄碱在果实中的累积和分配有增加趋势。

Effects of Different Potassium Levels on Eggplant Solanine Content and Distribution

This experiment studies the effect of different potassium levels on eggplant biomass，solanine content，solanine accumulation and distribution，so as to understand from plant nutrition view point how to control by certain extent the solanine formation and accumulation in eggplant，and then to improve the taste and flavorquality. Pot experiment was conducted in this experiment. The results indicated that eggplant fruit weight increase was distinct after applyingpotassium fertilizer. The solanine content in eggplant fruit was reduced remarkably after applying potassium fertilizer，that in other organs were also reduced. During 2 harvesting times，the solanine accumulation in eggplant fruit increased after applying potassium fertilizer，especially with moderate and large quantity of potassium fertilization. But that in fruit base，stem and flower showed declining tendency. The largest solanine distribution was observed in eggplant fruit ，then followed by leaf，and the least was in flower. While，solanine distribution coefficient in fruit base， flower，etc. organs were decreased along with the increase of potassium level. Applying potassium fertilizer could decrease the solanine content in eggplant fruit，which tended to increase solanine accumulation and distribution in eggplant fruit.