NaHCO3胁迫对荞麦种子萌发及幼苗生长的影响OA
Effects of NaHCO3 Stress on Seed Germination and Seedling Growth of Buckwheat
为探究盐碱胁迫对不同荞麦种子萌发和幼苗生长的影响,以甜荞品种白荞1号和苦荞品种云荞1号为试验材料,分别设10(T1)、20(T2)、30(T3)、40(T4)、50(T 5)mmol/L NaHCO3(碱性盐)溶液5个处理,对荞麦种子进行胁迫,同时以不胁迫作为对照(CK),测定种子的发芽指标和幼苗生长指标.结果表明,T4处理白荞1号的发芽率、发芽势、发芽指数均最高,分别为93.33％、93.33％、62.60,而T1处理白荞1号的活力指数、根长及根鲜质量、苗鲜质量均最高,分别为9.46、12.70 mm、0.066、0.202 g;云荞1号T1处理苗鲜质量较高,其他指标均在CK时最高,T3处理发芽指数较T1、T2处理显著提高了22.46％～28.85％,根长显著高于T4、T5处理.相关性分析结果表明,荞麦种子前期发芽指标间存在显著或极显著正相关,幼苗生长指标间也呈极显著正相关,但活力指数、根长、根鲜质量与发芽指标间相关性不显著.隶属函数分析结果表明,两荞麦品种均在CK时隶属函数平均值最大,增加NaHCO3溶液浓度可促进白荞1号和云荞1号发芽,但溶液浓度过大,会严重抑制幼苗生长.综上,白荞1号和云荞1号分别在40、30 mmol/L NaHCO3溶液浓度下发芽情况和幼苗生长情况较好.
To explore the effects of saline-alkali stress on seed germination and seedling growth of different buckwheat varieties,in this study,a sweet buckwheat variety Baiqiao 1 and a tartary buckwheat variety Yunqiao 1 were selected as experimental materials.Five concentrations of NaHCO3(alkaline salt)solution were set,including 10(T1),20(T2),30(T3),40(T4)and 50(T5)mmol/L for buckwheat seed stress treatment,and the non-stressed group was taken as the control(CK).Seed germination indices and seedling growth indices were determined.The results showed that under T4 treatment,Baiqiao 1 exhibited the highest germination rate,germination potential and germination index,which were 93.33％,93.33％and 62.60,respectively.While under T1 treatment,Baiqiao 1 had the highest vigor index,root length,root fresh weight and seedling fresh weight,with values of 9.46,12.70 mm,and 0.066,0.202 g correspondingly.For Yunqiao 1,the seedling fresh weight was relatively higher under T1 treatment,and all other indices reached the maximum under CK.The germination index under T3 treatment was significantly increased by 22.46％-28.85％in contrast to T1 and T2 treatments,and the root length was significantly higher than that under T4 and T5 treatments.Correlation analysis indicated that there were significantly or extremely significantly positive correlations among the early germination indices of buckwheat seeds,and an extremely significantly positive correlation was also observed among seedling growth indices.However,no significant correlation was found between vigor index,root length,root fresh weight and germination indices.Membership function analysis of the two buckwheat varieties revealed that the average membership function value of both varieties was the highest under CK.Appropriate increase in NaHCO3 solution concentration could promote seed germination of Baiqiao 1 and Yunqiao 1,while excessive concentration would severely inhibit seedling growth.In conclusion,Baiqiao 1 and Yunqiao 1 presented better comprehensive performance in seed germination and seedling growth under NaHCO3 stress at concentrations of 40 mmol/L and 30 mmol/L,respectively.
杨志雪;加央多拉;吴晗;孙墨可;李雪英;孙昕;李春花
吉林省白城市农业科学院,吉林 白城 137000吉林省白城市农业科学院,吉林 白城 137000吉林省白城市农业科学院,吉林 白城 137000吉林省白城市农业科学院,吉林 白城 137000吉林省白城市农业科学院,吉林 白城 137000白城市种子管理站,吉林 白城 137000吉林省白城市农业科学院,吉林 白城 137000
农业科技
荞麦盐碱胁迫种子萌发幼苗生长相关性分析隶属函数分析
buckwheatsalt-alkali stressseed germinationseedling growthcorrelation analysismembership function analysis
《山西农业科学》 2026 (3)
22-31,10
国家自然科学基金(31860412)国家燕麦荞麦产业技术体系(CARS-07)
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