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灌溉对两种辣椒产量及初生和次生代谢产物的影响 被引量:1

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摘要 本文评估了温室生产中水分胁迫对辣椒植株的生长、产量、初生代谢物(糖、有机酸和抗坏血酸)和次生代谢物(总酚含量、辣椒素和二氢辣椒素)积累等的影响。对一年生辣椒的变种‘Chili-AS Rot’和黄灯笼辣椒的变种娜迦·莫里希(‘Naga Morich’)进行了盆栽试验。以两种不同的处理方式对植物进行灌溉:最佳灌溉量或田间持水量灌溉和水分亏缺灌溉或50%田间持水量灌溉,可将其视为干旱胁迫。研究了干旱胁迫对辣椒产量和品质(主要和次要代谢产物)的影响。结果表明:50%田间持水量灌溉处理(水分亏缺状态)会影响单产,因为两种辣椒按照50%田间持水量进行灌溉处理时产量都较低。在水分亏缺的情况下,黄灯笼辣椒娜迦·莫里希(C.chinense‘Naga Morich’)的花蕾出现脱落现象,因而在第3次采摘时收获到的果实较少。在水分亏缺的情况下,两个辣椒品种的糖浓度均较低。在最佳灌溉量处理下,一年生辣椒‘Chili-AS Rot’果实中柠檬酸、草酸、延胡索酸、奎尼酸等有机酸含量较高。两种灌溉方式下苹果酸的浓度相差不大。黄灯笼辣椒娜迦·莫里希(C.chinense‘Naga Morich’)中柠檬酸和抗坏血酸在最佳灌溉量时浓度较高,而在水分亏缺状态时,其他有机酸浓度较高。一年生辣椒‘Chili-AS Rot’在适宜灌溉条件下,果实中具有较高的抗坏血酸和总酚含量,而在胁迫处理下,植株中的辣椒素和二氢辣椒素含量较高。而黄灯笼辣椒娜迦·莫里希(C.chinense‘Naga Morich’)在最佳灌溉量处理下辣椒素、二氢辣椒素和总酚含量均表现出较高的水平。
出处 《辣椒杂志》 2020年第2期41-50,共10页 Journal of China Capsicum
基金 ARRS研究项目园艺P4-0013和农业生态系统P4-0085的支持。
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