摘要
为研究高昼温对日光温室番茄果实发育及碳水化合物代谢的影响,对番茄植株分别作30℃、35℃高昼温处理,以25℃为对照,研究果实发育、碳水化合物含量、蔗糖代谢相关酶活性的变化。结果表明:高昼温促使番茄果实发育提前,成熟期提前,但空洞果增加;果实内果糖、葡萄糖、蔗糖含量均升高,而淀粉含量则在提前达到最高点后开始低于对照,尤其是35℃处理,在花后20d时,其果糖、蔗糖含量分别较对照升高28.91%和20.56%。在高昼温处理15d时,果实中酸性转化酶(AI)、中性转化酶活性(NI)降低,蔗糖合成酶(SS)、蔗糖磷酸合成酶(SPS)活性升高,昼温越高,与对照间的差别越大。可见,昼间温度越高,对番茄果实碳水化合物代谢的不利影响越大。
The effect of high temperature in daytime on development,metabolism of photosynthate in tomato fruits after flowering was studied.Plants were treated under 30℃ and 35℃ with the control of 25℃.Compared with the control,the development of fruits under high temperature advanced but the ratio of cavity fruit increased obviously.The fructose,glucose and sucrose content in fruits under high temperature increased,and the starch content first increased then decreased,especially the plants treated under 35℃.The activities of the acid invertase（AI） and neutral invertase（NI） in fruits decreased,but the activities of sucrose synthase（SS） and sucrose phosphate synthase（SPS） increased when plants were treated under high temperature for 15 days.The higher of the temperature for the plants,the higher of the difference in carbohydrate metabolism of tomato fruits between the treated plants and the control.
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2010年第6期658-661,共4页
Journal of Shenyang Agricultural University
基金
"十五"辽宁省重大项目(2005215004)
关键词
番茄
高昼温
发育
碳水化合物
蔗糖代谢酶
tomato
high temperature
development
carbohydrate
sucrose-metabolizing enzymes
作者简介
张洁（1977-），女，河海大学副教授，博士，从事设施农业科学与工程研究。
通讯作者：李天来（1955-），男，沈阳农业大学教授，博士，从事设施蔬菜栽培与生理研究。
