新疆农业科学2023，Vol.60Issue(11)：2824-2832,9.DOI:10.6048/j.issn.1001-4330.2023.11.026
围栏封育和自由放牧对伊犁绢蒿生长规律和内源激素的影响
Effects of fencing and free grazing on growth patterns and endogenous hormones of Seriphidium transiliense
摘要
Abstract
[Objective]To study the effects of fenced enclosure and free grazing on growth patterns and endogenous hormone levels of Seriphidium transiliense,and to provide theoretical reference for vegetation resto-ration in degraded Artemisia desert grassland ecosystems.[Methods]Fencing and free grazing Seriphidium transiliense were taken as the research objects,and the methods in botany,plant physiology and turf manage-ment in the plant morphology,plant endogenous hormones and"four times the amount of"approach to Seriphi-dium transiliense plant height,coverage,density,biomass,primary branch number and secondary branch number were applied to conduct statistics,The dry weight of leaves,stem and root of each plant were meas-ured by drying method,and the contents of endogenous hormones(IAA,ABA,CTK,GAs and ETH)were measured by targeting method.Three transect lines were set for each treatment,and 40 quadrats were meas-ured by each transect line.Furthermore,the growth rule and endogenous hormone changes of Seriphidium transiliense under the two treatments were summarized.[Results]The plant height,biomass,leaf dry weight,stem dry weight and root dry weight were 2.57 times,29.73 times,7 times,7.87 times,5.21 times and 5.64 times,respectively of those fenced in Seriphidium transiliense.Fencing and free grazing had significant effects on CTK and ABA contents in leaves of Seriphidium transiliense(P＜0.05).Except GAs,there was no significant difference in the content of endogenous hormones in stem of Seriphidium transiliense between the two treatments(P＜0.01).Fencing had little effect on endogenous hormones of root system,but the con-tent of ETH was significantly different between them(P＜0.05).[Conclusion]Fenced for 4 years,the morphological characteristics and growth trend of Seriphidium transiliense are in sharp contrast with the minia-tures and dwarfism of free grazing,especially the IAA and CTK contents of leaves and stems are more closely related to plant height and first-order branch number.关键词
伊犁绢蒿/围栏封育/自由放牧/内源激素/生长规律Key words
Seriphidium transiliense/fenced enclosure/free grazing/plant endogenous hormones/growth rule分类
农业科技引用本文复制引用
侯钰荣,柯梅,李超,兰吉勇,康帅,靳俊鹏,魏鹏..围栏封育和自由放牧对伊犁绢蒿生长规律和内源激素的影响[J].新疆农业科学,2023,60(11):2824-2832,9.基金项目
新疆维吾尔自治区自然科学基金项目"退化的蒿属荒漠草地建群种植物伊犁绢蒿"妥协式"生长规律研究"(2020D01A38) （2020D01A38）
新疆维吾尔自治区创新团队项目"混播草地有机碳库创新团队"(2022D14013) （2022D14013）
新疆维吾尔自治区基本科研业务费项目"水分胁迫下驼绒藜幼苗抗性与其膜质构成关系研究"(KY202117)A fund project of Xinjiang Autonomous Region"Compromise Growth Law of Seriphidium transiliense in Degraded Artemisia Desert Grassland"(2020D01A38) （KY202117）
Xinjiang Autonomous Region Innovation Team Project"Mixed grassland organic carbon pool innovation team project"(2022D14013) （2022D14013）
Xinjiang Basic Scientific Research Project"Relationship between resistance and membrane composi-tion of Chenopodium ceratoides seedlings under water stress"(KY202117) （KY202117）
