高师理科学刊2025，Vol.45Issue(7)：75-82,8.DOI:10.3969/j.issn.1007-9831.2025.07.014
吊兰根的形态解剖学观察及其对干旱胁迫的生理响应
Morphological and anatomical observation of Chlorophytum comosum root and its physiological response to drought stress
孙玉栋 1郑暄睿 1梁琦航 1王安琪 1付学鹏1
作者信息
- 1. 齐齐哈尔大学 生命科学与农林学院,黑龙江 齐齐哈尔 161006
- 折叠
摘要
Abstract
Chlorophytum comosum was used as the experimental material to observe its morphological and anatomical characteristics,and to study the physiological response of roots and leaves to drought stress(2,10,30 d).The results showed that there were three types of fine roots(diameter 0.52±0.36 mm),coarse roots(3.01±0.54 mm)and fleshy roots(9.57±1.42 mm)in the roots of Chlorophytum comosum.The cortical radius(3.92±0.03 mm)and stele diameter(1.47±0.15 mm)of fleshy enlarged roots were significantly higher than those of coarse roots(0.75±0.05 mm and 0.62±0.08 mm).With the extension of drought time,the mass fraction of chlorophyll a in leaves decreased from 357.61±3.52 μg·g-1 to 193.53±4.62 μg·g-1(P<0.000 1),the mass fraction of chlorophyll b decreased from 141.64±3.72 μg·g-1 to 75.06±3.39 μg·g-1(P<0.000 1),and the mass fraction of carotenoids decreased from 118.93±4.23 μg·g-1 to 38.98±3.86 μg·g-1(P<0.000 1).The water content of fleshy roots decreased from 87.01%±0.58%to 63.72%±3.21%(P<0.001),the malondialdehyde(MDA)concentration increased from 0.41±0.06 μmol·mg-1 to 1.06±0.07 μmol·mg-1(P<0.001),and the proline content increased from 1.37±0.15 μg·g-1 to 5.73±0.17 μg·g-1(P<0.000 1).Soluble sugar concentration increased from 6.07±0.71 mmol·L-1 to 9.00±0.41 mmol·L-1(P<0.01).The activity of superoxide dismutase(SOD)decreased significantly(P<0.001),the activities of peroxidase(POD)and polyphenol oxidase(PPO)increased significantly(P<0.001),and the activity of catalase(CAT)increased first and then decreased(P<0.001).The study revealed the physiological response of Chlorophytum comosum under drought stress,and provided a theoretical basis for analyzing the drought tolerance mechanism of Chlorophytum comosum and the inheritance of plant stress resistance.关键词
吊兰/干旱胁迫/生理响应Key words
Chlorophytum comosum/drought stress/physiological response分类
农业科技引用本文复制引用
孙玉栋,郑暄睿,梁琦航,王安琪,付学鹏..吊兰根的形态解剖学观察及其对干旱胁迫的生理响应[J].高师理科学刊,2025,45(7):75-82,8.
