摘要
桑树是一种兼具经济效益和生态效益的树种,适宜在石漠化地区推广种植.高钙是石漠化地区土壤的重要特征之一,也是限制植物生长发育的主要因素之一.因此,了解我国大面积栽植的不同杂交桑品种的高钙耐受性,并筛选耐高钙胁迫的品种具有重要意义.以7个杂交桑品种幼苗为材料,研究不同桑树品种在高钙胁迫下的生理生化响应,并通过隶属函数法综合评价各品种的耐钙胁迫特性.结果表明:不同桑树品种在高钙胁迫下生长受到显著抑制,脯氨酸质量分数显著上升,而品种间抗氧化酶响应胁迫的模式存在差异.基于隶属函数值,聚类分析发现丰驰和桂桑优62为强高钙耐受品种,粤桑11和桂桑优12为中等高钙耐受品种,塘10×伦109、桂桑6和桂桑优2为高钙敏感品种.
Mulberry(Morus spp.)is a tree species with both economic and ecological benefits,which is suitable for planting in rocky desertification areas.High calcium concentration(HCC)is one of the important characteristics of the soil in these areas,also one of the main factors limiting the plant growth and development.Therefore,it is of great significance to understand the HCC tolerance of different hybrid mulberry varieties widely planted in China,and to select the varieties with HCC tolerance.In this paper,the seedlings of seven varieties were used as materials to study the physiological and biochemical responses of different mulberry varieties under HCC stress.Then,the HCC tolerance of each variety was comprehensively evaluated by the membership function method.The results showed that the growth of these varieties was significantly inhibited,and the content of proline was significantly increased under HCC stress.The response patterns of antioxidant enzymes to HCC stress were different among varieties.Cluster analysis based on membership function values showed that Fengchi and Guisangyou 62 were highly tolerant to HCC,Yuesang 11 and Guisangyou 12 were moderately tolerant to HCC,and Tang 10×Lun 109,Guisang 6 and Guisangyou 2 were sensitive to HCC.
作者
范伟
孔秋月
胡杰
刘洋
赵爱春
FAN Wei;KONG Qiuyue;HU Jie;LIU Yang;ZHAO Aichun(State Key Laboratory of Resource Insects,Institute of Sericulture and Systems Biology,Southwest University,Chongqing 400715,China;Chongqing Qianjiang Desert Ecosystem Positioning Observation and Research Station,National Forestry and Grassland Administration,Qianjiang Chongqing 409099,China)
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2024年第10期90-98,共9页
Journal of Southwest University(Natural Science Edition)
基金
国家现代农业产业技术体系建设专项(CARS-18-ZJ0201)
重庆科技兴林项目(渝林科研2020-2)。
关键词
桑树
石漠化
高钙胁迫
品种筛选
隶属函数
mulberry
stony desertification
high calcium concentration stress
variety screening
membership function values
