6-BA對弱光環(huán)境下2個黃瓜品種幼苗生長及光合特性的影響

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中圖分類號：S642.2 文獻標志碼：A 文章編號：1673-2871（2025）06-130-08

Effects of 6-BA on the growth and photosynthetic characteristics of two cultivars of cucumber seedlings under low light environment

XUNTianzhuo’，HU Haoxiang'，TAO Zhei ，LAN Xin1 ，LIWenwen'，XU Hongjun1，SUN Yanru2， ZHANGWeihua2，JIAKai'

（1.ColegeofiueicuualUitUini;glute culturalevelopmentomanyimited，hule442oo，Xinjiang，hina）

Abstract：To mitigate theeffectsof low-light stress on vegetable seedlings inspring production，the cucumber light-sensitive varietyRuixiangmiciandthelow-light-tolerantvarietyJinshunA4wereusedastestmaterials，andsetup normal li ght（500μmol?m-2?s-1） in the light incubator as the normal light control CK1，and the low light environment （204 （80–100μmol?m-2?s-1） in the daylight chamber of Xinjiang Agricultural University as the low light control CK2.After the cotyledons unfolded at7 dof seedling age，different concentrations of 6-BA solution（40，60， 80mg?L?i? weresprayed on thefoliagetoanalyze theeffctsofdifferenttreatmentsoncucumberseedlinggrowth，seedlinggrowth index，andphoto synthesis indexes under low-light environment.Theresults showed that the two varieties ofcucumber showed the same performance in growth indexes and photosyntheticcharacteristics.Compared with the low-lightcontrol，sprayingdiferentconcentrationsof6-BAinhibitedplantheightelongation，increasedstemthicknes，maximumleafarea，rootlength， abovegrounddryandfreshmas，rootdrandfreshmass，andseedlingindex，andincreasedtherelativecontentofchloopyll， photosynthetic gas exchangeparameters，andchlorophyllfluorescence parameters，among which，Ruixiangmici andJinshun A4 treated with 80mg?L-1 6-BAwere more effective in the growth indexes.Ruixiangmici and Jinshun A4 seedlings sprayed with 80mg?L-16 -BA increased significantly the strong seedling index by 13.79% and 80.77% ，and the net photosynthetic rate by 65.92% and 19.65% ，respectively.After the comprehensive analysis of the afiliation function，the concentration of 80mg?L-1 of 6-BA had the best effect on the mitigation of cucumber seedling growth under low light environment. Key words： Cucumber; 6-BA; Low light environment; Growth index; Photosynthetic characteristics

我國南疆地區(qū)分布于塔里木盆地四周，近年米逐漸形成規(guī)?；脑O施蔬菜種植產業(yè)帶。（剩余11412字）