农业工程学报Issue(5)：138-147,10.DOI:10.3969/j.issn.1002-6819.2014.05.018
人工环境昼夜温差对番茄营养物质和干物质分配的影响
Effect of difference between day and night temperature on nutrients and dry mass partitioning of tomato in climate chamber
摘要
Abstract
Tomato plants (Solanum lycopersicum cv. Jinguan5) were grown in a climate chamber to determine the responses of tomato quality attributes to the difference between day and night temperatures (DIF). Six day/night temperature combinations 31/19, 28/22, 25/25, 24/12, 21/15, and 18/18℃with respective DIFS of 12, 6, 0, 12, 6, 0 at 25, and 18℃ mean daily temperature were observed. The dynamic change of soluble sugar and sucrose content, dry mass portioning in different organs, free amino acid and soluble protein, and fruit quality of tomatoes were measured. At the daily average temperature of 18℃, the soluble sugar and sucrose content in fruits were highest under 12℃DIF treatment, and lowest under 0 DIF treatment;while at the daily average temperature of 25℃, the soluble sugar and sucrose content in fruits were highest under 6℃DIF treatment. At the daily average temperature of 18℃, the total free amino acids and soluble protein content of leaves were highest under 12℃DIF treatment, and lowest under 0 DIF treatment;while at the daily average temperature of 25℃, the total free amino acids of leaves were highest under 6℃DIF treatment, and soluble proteins were also to be the maximum under 6℃ DIF treatment in young fruit and picking time. The dry mass allocation proportions in fruits at the daily average temperature of 18 and 25℃were both the maximum under 6℃DIF treatment, and minimum under 12℃DIF treatment. The organic acid content of fruits at the daily average temperature of 18℃was lowest under 12℃DIF treatment, while at the daily average temperature of 25℃, the content was lowest under 6℃DIF treatment. VC, soluble proteins, and lycopene of fruits have the opposite trend compared with the organic acid content at the daily temperature of 18℃. Studies suggested that under the condition of a daily average temperature of 18℃with DIF from 0-12℃, the greater the DIF was, the more soluble sugar and sucrose were accumulated in the fruits, the larger free amino acids and soluble protein were, and the better fruit quality was. It’s good for dry mass transportation to increase DIF appropriately, but too high or too low a DIF was not conducive to the dry mass accumulation in fruits. Under the condition of a daily average temperature of 25℃with DIF from 0-12℃, the interior fruit quality under 6℃ DIF was the best. It was concluded that under the different daily temperature within the same DIF treatments, the interior fruit interior quality under 25℃treatment was better than that under 18℃.关键词
温度/果实/生长/昼夜温差/干物质分配/番茄Key words
temperature/fruit/growth/diurnal temperature/dry matter partitioning/tomato分类
天文与地球科学引用本文复制引用
杨再强,王学林,彭晓丹,赵翔,袁小康,韩秀君..人工环境昼夜温差对番茄营养物质和干物质分配的影响[J].农业工程学报,2014,(5):138-147,10.基金项目
国家自然科学基金面上项目（41275117）；公益（气象）行业科研专项（GYHY201206024）；江苏省科技支撑项目（社会发展）（BE2010734）。 （）
