东北林业大学学报2026，Vol.54Issue(10)：83-92,10.
紫枝玫瑰与重瓣红玫瑰在半干旱沙区花期生理适应性及抗旱性
Physiological Adaptability During Flowering Period and Drought Resistance of Rosa rugosa'Zizhi'and Rosa rug-osa'Plena'in Semi-Arid Sandy Areas
摘要
Abstract
To screen Rosa rugosa germplasm resources suitable for cultivation in semi-arid sandy areas and clarify the adaptive differences and drought-tolerant physiological mechanisms of different R.rugosa cultivars in such regions,field adaptation trials were conducted in Tailai County,Qiqihar City-a typical semi-arid sandy zone-using R.rugosa'Zizhi'introduced from Pingyin County,Jinan City,Shandong Province,and R.rugosa'Plena'introduced from Qingcheng Village,Ning'an City,Heilongjiang Province as research materials.Intact petals of the two R.rugosa cultivars were collected across five flowering stages:bud stage,initial blooming stage,half-blooming stage,full blooming stage,and late full blooming stage.Petal morphological traits were systematically observed,and petal area was measured.Meanwhile,drought tolerance-relat-ed physiological indices were determined,including mass fractions of petal pigments(anthocyanins and carotenoids),ac-cumulation levels of basic physiological substances(water content,soluble sugars,and soluble proteins),activities of an-tioxidant enzymes(SOD and POD),molality of membrane lipid peroxidation product(malondialdehyde,MDA),and mass fraction of osmotic adjustment substance(proline).The membership function method was adopted to comprehensively evaluate drought resistance of the two cultivars.The results showed that both R.rugosa cultivars could complete the entire flowering developmental cycle in the semi-arid sandy area of Tailai County,while significant inter-cultivar differences exis-ted in morphological formation(e.g.,petal area)and physiological metabolic responses.The petal pigment content of R.rugosa'Plena'was significantly higher than that of R.rugosa'Zizhi',presenting superior flower color quality.In con-trast,R.rugosa'Zizhi'maintained relatively high tissue water content and soluble sugar accumulation at the late full blooming stage.Its peak SOD and POD activities were 34.8%and 79.3%higher than those of R.rugosa'Plena',re-spectively,and the molality of MDA remained consistently low(≤0.53μmol·g-1).By comparison,drought tolerance-related physiological indices of R.rugosa'Plena'fluctuated drastically,with its MDA molality at the late full blooming stage 52.8%higher than that of R.rugosa'Zizhi',indicating severer membrane lipid peroxidation damage.Based on the comprehensive evaluation values calculated by the subordinate function method,the average subordinate function value of R.rugosa'Zizhi'was 0.643,while that of R.rugosa'Plena'was 0.315.Overall,R.rugosa'Zizhi'exhibited stron-ger drought resistance than R.rugosa'Plena'.关键词
紫枝玫瑰/重瓣红玫瑰/半干旱沙区/花期生理适应性/抗旱性评价Key words
Rosa rugosa'Zizhi'/Rosa rugosa cv.Plena/Semi-arid sandy area/Physiological response during flow-ering stage/Drought tolerance evaluation分类
农业科技引用本文复制引用
代丽娟,张靖楠,郭浩然,张诗雨,苏小霞,徐进,王竞红..紫枝玫瑰与重瓣红玫瑰在半干旱沙区花期生理适应性及抗旱性[J].东北林业大学学报,2026,54(10):83-92,10.基金项目
国家重点研发计划子课题(2024YFF1306403-02). （2024YFF1306403-02）
