吉林农业大学学报2026，Vol.48Issue(2)：279-285,7.DOI:10.13327/j.jjlau.2021.1568
不同土壤相对湿度对果实膨大期野生欧李生长发育及光合特性的影响
Effects of Different Relative Soil Moisture at Fruit Enlargement Stage on Growth and Photosynthetic Characteristics of wild Cerasus humilis
摘要
Abstract
In order to explore the effects of different relative soil moisture at fruit enlargement stage on the growth and photosynthetic characteristics of Cerasus humilis,the wild Cerasus humilis acces-sion collected were used as materials.The experimental materials at fruit enlargement stage were treated with potted water control,and the growth and development related indexes,photosynthetic pa-rameters,chlorophyll fluorescence parameters and osmoregulatory substances content of Cerasus hu-milis were measured during fruit maturity.The results showed that with the decrease of relative soil moisture,the growth and development related indexes such as plant height,branch length and single fruit weight increased first and then decreased.The net photosynthetic rate(Pn),stomatal conduc-tance(Gs)and transpiration rate(Tr)of Cerasus humilis leaves showed a downward trend,the intercel-lular CO2 concentration(Ci),chlorophyll content,maximum photochemical efficiency(Fv/Fm),ac-tual light energy conversion efficiency(ΦPS Ⅱ),photochemical quenching coefficient(qP),and con-tents of soluble sugar and soluble protein increased first and then decreased with the increase of drought stress,the non photochemical quenching coefficient(qN)decreased first and then increased,and the growth and photosynthetic characteristics of Cerasus humilis were significantly affected.The relative soil moisture was lower than 50%,and the growth and photosynthetic characteristics of Cera-sus humilis were inhibited.The relative soil moisture was 50%-60%,promoting the growth,develop-ment and photosynthetic characteristics of Cerasus humilis.At this time,the growth and photosyn-thetic characteristics of Cerasus humilis were the best.This conclusion provides a theoretical basis for scientific irrigation and popularization of Cerasus humilis.关键词
野生欧李/土壤相对湿度/生长发育/光合特性/渗透调节物质Key words
wild Cerasus humilis/relative soil moisture/growth and development/photosynthetic characteristics/osmoregulation substance分类
农业科技引用本文复制引用
许帅,郭瑞雪,乔建磊,王连君..不同土壤相对湿度对果实膨大期野生欧李生长发育及光合特性的影响[J].吉林农业大学学报,2026,48(2):279-285,7.基金项目
吉林省教育厅科学技术研究项目(JJKH20210352KJ),吉林省科技发展计划项目(20210202076NC) （JJKH20210352KJ）
