耐盐甜瓜品种筛选及其生理响应分析

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关键词盐胁迫；甜瓜；生理响应；品种筛选中图分类号S652 文献标识码A文章编号 0517-6611（2025）20-0052-04doi：10.3969/j.issn.0517-6611.2025.20.010

AbstractTodentifaltrantvretisableforlocalivatiojoreloretis（Tyungang，ina QuanfuB35，engtianuiangJigan，Bgj，LiertianN.9，Wei’i，aoaaneinu，intian）udel （200mmol/LNaClfor50days）wereevaluatedbymeasuringkeyphysiological idicators，ncludingbetaine，proline（Pro），subleprotei， andmalondialded（D）contetsAmulti-atorcomprehesieessmentwasoductedteteevaretalsaltolerae.er sultsrevealedsiantdifesiiocalsposaogvetLitianuidrkableiceasiblepoten （42.42% ）anda reduction in MDA（ 11.97% ），indicating strong protein homeostasis and membrane stability under stress，thus representing the most salt-tolerant genotype.Lintian 111 also demonstrated considerable tolerance，with only a 10.62% decrease in soluble protein and a （20 7.90% reductioninMDA.QuanfuB35andMengtianRuixiangshowedmoderatesalt tolerance，haracterizedbysubstantialprolinaccumula tion （ 125.79% and 304.00% ，respectively）and relatively minimal membrane damage.Although Xinxuan Baishami displayed extreme proline accumulation （ 752.60% ），its soluble protein content decreased sharply （53.24%） ，indicating limited metabolic stability under salinity. Tianyuxiangwang showed increased betaine （ 19.69% ）but a significant decline in soluble protein （33.64% ），constraining its overall tolerance. In contrast，Maohua Tianfei and Li'ertian No.9 were identified as salt-sensitive，with the former showing a 56.12% decrease in proline and the latter a 24.15% increase in MDA.Inconclusion，LintianFuyuandLintian1arerecommendedasdominantsalt-tolerant varieties in Inner Mongolia，withteirchasmsatrbutedtosergsticgulationofmoticsubsaces，proteinmetabolismndmembraneinteitys study provides a scientific basis for melon breeding and cultivation in saline-alkali regions.

Key wordsSalt stress;Melon;Physiological response; Variety screening

盐渍化是全球农业可持续发展面临的重要挑战之一。（剩余9136字）