CO2加富对温室小型黄瓜光合特性和幼苗质量的影响
Effects of CO2 Enrichment on Photosynthetic Characteristics and Seedling Quality of Mini-Cucumber in Greenhouse
李彦平 1宋红霞2
作者信息
- 1. 柳林县农机服务中心,山西 吕梁 033000
- 2. 山西农业大学园艺学院,山西太谷 030801
- 折叠
摘要
为探讨小型黄瓜幼苗对CO2浓度倍增的响应情况,以两个小型黄瓜品种为试材,研究C)2倍增对温室小型黄瓜幼苗形态指标、壮苗指标和光合参数的影响.结果表明,CO2加富提高了黄瓜的净光合速率、胞间CO2浓度和光饱和点,降低了气孔导度、蒸腾速率、光补偿点和CO2补偿点.CO2加富使小型黄瓜幼苗的茎粗和株高显著增大,叶片数和叶面积增大,干物质积累量显著增加,净同化率和壮苗指数升高,根冠比增大.CO2加富提高了小型黄瓜的光合性能和幼苗质量.亘青27号较多福对CO2加富更为敏感.
Abstract
The purpose of this study is to explore the response of mini-cucumber seedlings to double CO2 concentra-tion.Two kinds of mini-cucumbers were used as materials to study the effects of CO2 enrichment on the morphologi-cal indexes,seedling indexes and photosynthetic parameters of greenhouse mini-cucumber seedlings.CO2 enrich-ment increased the net photosynthetic rate,intercellular CO2 concentration and light saturation point of cucumber,and decreased stomatal conductance,transpiration rate,light compensation point and CO2 compensation point.CO2 enrichment significantly increased the stem diameter and plant height of mini-cucumber seedlings,increased leaf number and leaf area,significantly increased dry matter accumulation,increased net assimilation rate and seedling index,and increased root-shoot ratio.The enrichment of CO2 increased the photosynthetic performance and seedling quality of mini-cucumber.Genqing 27 is more sensitive to CO2 enrichment than Duofu.
关键词
小型黄瓜/CO2加富/光合特性/壮苗指数Key words
Mini-cucumber/CO2 enrichment/Photosynthetic characteristics/Strong seedling index引用本文复制引用
基金项目
山西农业大学横向科技项目(2018HX09)
山西省应用基础研究计划(201801D221295)
出版年
2023
NETL
NSTL
万方数据