西瓜萌发期耐盐种质材料筛选

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中图分类号：S651 文献标志码：A 文章编号：1673-2871（2025）07-062-10

Screening of salt-tolerant watermelon germplasm at germination stage

WANG Mingdi'，ZHANG Yanchu’，LI Xingyuan’，WANG Binquan’，HUANG Zhan’，LIU Jinbao²， ZHANGYunling²，YOUShouchang³，ZHANG Ruimin'

（1.Collgedalio fang26dongaeanogricltualolgodeandoa

Abstract：Thescarcityofsalt-tolerant watermelon germplasmresources limitsits large-scale production insaline soils. Using12 watermelon germplasm as test materials，theeffctsof different concentrations ofsalt treatments（0，100， 150 and 200mmol⋅L-1 NaCl）on their germination were studied.The germination rate，germination index，and germination potential were measured，and thesalt tolerance of the12 watermelon germplasm were comprehensivelyevaluated usingmethods such as subordinate functionanalysisandclusteranalysis.Theresults showed thatcompared withCK （ 0mmol⋅L-1 NaCl），salt treatments at diferent concentrations reduced the germination potential，germination index， shootlength，andvigorindex inmost watermelongermplasm，whilethesaltinjuryindexwastheopposite.Thesalt tolerance of the 12 watermelon germplasms showed significant diferenceduring the germination stage.Byusing the subordinatefunctionand clusteranalysis，thegermplasmresources wereclassified as follows：W62，E125，E62andB24as salt-tolerant，B12，C84，C21，A79andD12asmoderatelysalt-tolerant，C5，D47andB56assalt-sensitive.Therearch resultsprovide materialsfortheexplorationofsalt-tolerantgenesandthebreedingofsalt-tolerantvarietiesinwatermelon. Key words：Watermelon; Salt tolerance; Germination stage; Cluster analysis; Germplasm screening

世界盐渍壤土面积近 1×109hm2 ，其中亚洲约有3.99×108hm2[1] 。（剩余10308字）