叶用枸杞幼苗对不同遮光率的生长及生理响应OA
Growth and physiological response of Lycium chinense'Tianjing 3'seedlings to different shading rates
为了解'天精 3号'对光照的需求特性,扩大其栽培范围,提高林地空间利用效率,通过无遮光对照(CK)、轻度遮光(LS)、中度遮光(MS)和重度遮光(SS)4个处理,分别测定其生长和生理指标.结果显示,轻度遮光有利于'天精 3号'株高生长,且对其地径、总叶绿素、叶绿素a、叶绿素b和类胡萝卜素含量等影响较小,有利于可溶性糖和可溶性蛋白含量的积累,并有助于缓解MDA含量的积累,促进POD活性的提升,并减缓SOD和CAT的应激反应,中度和重度遮光显著阻碍了'天精 3号'的株高、地径增长,降低了总叶绿素、叶绿素a、叶绿素b含量及叶绿素a/b的值.以上结果显示,'天精 3号'适宜的遮光强度为轻度遮光(透光率80±5%),在生产应用中可以将其套种在相应遮光率的疏林地和果园行间.
To understand the light requirement characteristics of'Tianjing3',expand its cultivation range and improve the spatial utilization efficiency of forest land,the growth and physiological indicators of'Tianjing3'was measured through four treatments:on shading control(CK),light shading(LS),moderate shading(MS),and severe shading(SS).The results showed that light shading was beneficial the the height growth of'Tianjing3',but had little impact on its ground diameter,total chlorophyll,chlorophyll a,chlorophyll b,and carotenoid content,which was beneficial to the accumulation of soluble sugars and proteins,mitigated the accumulation of MDA,enhanced POD activity,and reduced the stress responses of SOD and CAT.In contrast,moderate and severe shading significantly hindered the height and ground diameter growth of'Tianjing3',decreased the total chlorophyll,chlorophyll a,chlorophyll b content,and the chlorophyll a/b ratio.These findings indicate that the optimal shading intensity for'Tianjing3'was light shading(light transmittance of 80±5%),and it could be interplanted in sparse forests and orchard rows with corresponding shading rates in practical applications.
谢英赞;王博雅;黄世友;师贺雄;陈本文
重庆市林业科学研究院,重庆 沙坪坝 400036||重庆城市生态系统定位观测研究站,重庆 沙坪坝 400036重庆市林业科学研究院,重庆 沙坪坝 400036||扬州职业技术大学生物与化工工程学院,江苏 高邮 225600重庆市林业科学研究院,重庆 沙坪坝 400036||重庆城市生态系统定位观测研究站,重庆 沙坪坝 400036重庆市林业科学研究院,重庆 沙坪坝 400036||重庆城市生态系统定位观测研究站,重庆 沙坪坝 400036重庆市林业科学研究院,重庆 沙坪坝 400036||重庆城市生态系统定位观测研究站,重庆 沙坪坝 400036
叶用枸杞'天精3号'遮光生长生理
Lycium chinense'Tianjing 3'shadinggrowthphysiology
《四川林业科技》 2026 (2)
14-21,8
重庆市科技兴林项目(渝林科研2022-5)
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