干旱胁迫下5个种源砂地柏抗旱性研究  

Drought Resistance of Juniperus sabina from Different Provenances

作　　者：李广花 顾文毅[1] 祁银燕 LI Guang-hua;GU Wen-yi;QI Yin-yan(Qinghai Key Laboratory of Plateau Forest Genetics and Breeding,Qinghai Academy of Agriculture and Forestry Sciences/Qinghai Academy of Agriculture and Forestry Sciences,Qinghai Key Laboratory of Plateau Forest Genetics and Breeding of State Forestry and Grassland Administration,Xining,Qinghai 810016;Laboratory of Germplasm Resources Research and Utilization of Qinghai-Tibet Plateau,Xining,Qinghai 810016)

机构地区：[1]青海大学农林科学院/青海省农林科学院青海省高原林木遗传育种重点实验室,青海高原林木遗传育种国家林业和草原局重点实验室,青海西宁810016 [2]青藏高原种质资源研究与利用实验室,青海西宁810016

出　　处：《陕西林业科技》2025年第1期31-36,53,共7页Shaanxi Forest Science and Technology

基　　金：2024年青海省中央引导地方科技发展资金科技成果转移转化项目(2024ZY042)。

摘　　要：为评价不同种源砂地柏的抗旱性,本研究以内蒙古、青海、陕西、宁夏、新疆5个种源、3年生砂地柏扦插苗为试验材料,采用盆栽控水的方法,分别测定了叶片含水量(LWC)、叶绿素(CHL)含量、游离脯氨酸(PRO)含量、丙二醛(MDA)含量、可溶性糖含量(SS)、超氧化物歧化酶(SOD)活性和过氧化物酶(POD)活性等指标的变化规律,运用隶属函数法进行抗旱性综合评价。结果表明:青海、内蒙古、陕西、宁夏、新疆5个种源砂地柏隶属函数值分别为0.518、0.396、0.440、0.437和0.550,其中新疆种源砂地柏居第1位,抗旱性最强;内蒙古种源砂地柏抗旱性最弱。抗旱能力依次为新疆种源砂地柏>青海种源砂地柏>陕西种源砂地柏>宁夏种源砂地柏>内蒙古种源砂地柏。In order to evaluate the drought resistance of Juniperus sabina with different provenances,the cuttings of 3 year old Juniperus sabina with 5 provenances from Neimeng,Qinghai,Shanxi,Ningxia and Xinjiang were used as experimental materials,and potted water control method was adopted.The leaf water content(LWC),chlorophyll(CHL)content,free proline(PRO)content,malondialdehyde(MDA)content,soluble sugar content(SS)content,superoxide dismutase(SOD)activity and peroxidase(POD)activity were measured respectively,and the membership function method was used to evaluate the drought resistance of the leaves.The results showed that the membership function values of the five provenances of Qinghai,Neimeng,Shaanxi,Ningxia and Xinjiang were 0.518,0.396,0.440,0.437 and 0.550,respectively.The membership function value of Xinjiang was 0.550,ranking the first with the strongest drought resistance.The membership function value of Juniperus sabina from Inner Mongolia provenance is 0.396,indicating the weakest drought resistance.The drought resistance was in the order of Xinjiang provenance>Qinghai provenance>Shaanxi provenance>Ningxia provenance>Neimeng provenance.

关 键 词：砂地柏 自然干旱胁迫 抗旱性 综合评价 

分 类 号：Q945[生物学—植物学]