逆境因子对包衣包被的白花三叶草种子萌发的影响
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摘要
通过测定包衣包被的白花三叶草种子在不同pH、NaCl和PEG浓度下的发芽率、发芽势、发芽指数和平均发芽时间,探讨了其在逆境条件下的萌发特性;结果表明,pH对包衣包被白花三叶草种子萌发影响不明显;不同盐浓度下三叶草种子萌发为对照>50 mmol/L>100 mmol/L=150 mmol/L,4个指标均存在极显著差异;不同PEG浓度处理白三叶草种子的发芽特性均明显低于对照。综合来看,白花三叶草在弱酸性条件下萌发最好,耐盐性差和能耐受相当于5%PEG浓度的干旱胁迫。
The germination rate, germination potential, germination index and average germination time of coated white clover seeds under different pH, NaCl and PEG concentrations were measured, and the germination characteristics under stress conditions were discussed. The results showed that the effect of pH on seed germination of coated white clover was not obvious. There were significant differences in seed germination of clover as control > 50 mmol/L > 100 mmol/L =150 mmol/L under different salt concentrations. The germination characteristics of white clover seeds treated with different concentrations of PEG were obviously lower than that of the control. On the whole, white clover germinates best under weak acid condition, and has poor salt tolerance and tolerance to drought stress equivalent to 5% PEG concentration.
The germination rate, germination potential, germination index and average germination time of coated white clover seeds under different pH, NaCl and PEG concentrations were measured, and the germination characteristics under stress conditions were discussed. The results showed that the effect of pH on seed germination of coated white clover was not obvious. There were significant differences in seed germination of clover as control > 50 mmol/L > 100 mmol/L =150 mmol/L under different salt concentrations. The germination characteristics of white clover seeds treated with different concentrations of PEG were obviously lower than that of the control. On the whole, white clover germinates best under weak acid condition, and has poor salt tolerance and tolerance to drought stress equivalent to 5% PEG concentration.
引文
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[3]高占军,张星亮,张颖,等.盐胁迫对白三叶种子萌发及幼苗生理特性的影响[J].草原与草坪,2015,35(2):73-76.
[4]黄寿臣,陈飞,李丽丽,等.松嫩平原盐碱土AM真菌对白花三叶草生长及生理生化的影响[J].贵州农业科学,2017,45(7):61-67.
[5]安利佳,李凤霞,张俊敏.豆科植物组织培养研究[J].植物学报,1992,(10):743-752.
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[9]马成仓,洪法水.pH对油菜种子萌发和幼苗生长代谢的影响[J].作物学报,1998,24(4):509-512.
[10]胡雁春.模拟酸雨对白三叶草种子萌发及幼苗生理指标的影响[J].安徽农业科学,2014,42(1):85-86,89.
[11]王玉萍,董雯,张鑫,等.水杨酸对盐胁迫下花椰菜种子萌发及幼苗生理特性的影响[J].草业学报,2012,21(1):213-219.
[12]张侠,宋莉璐,魏艳丽,等.NaCl胁迫对三叶草种子萌发的影响[J].山东科学,2008(05):11-14.
[13]卢艳敏,苏长青,李会芬.不同盐胁迫对白三叶草种子萌发及幼苗生长的影响[J].草业学报,2013,22(4):123-129.
[14]沈洁,张辉,张雷,等.海水胁迫白三叶草种子萌发的影响[J].北方园艺,2012,(9):51-53.
[15]黄文娟,马晓玲,李军,等.红果小檗种子萌发特性研究[J].塔里木大学学报(自然科学版),2016,35(8):14-20.
[2]王华军,张雷贤.白三叶草病虫害的防治[J].中国花卉园艺,2002,(23):22-24.
[3]高占军,张星亮,张颖,等.盐胁迫对白三叶种子萌发及幼苗生理特性的影响[J].草原与草坪,2015,35(2):73-76.
[4]黄寿臣,陈飞,李丽丽,等.松嫩平原盐碱土AM真菌对白花三叶草生长及生理生化的影响[J].贵州农业科学,2017,45(7):61-67.
[5]安利佳,李凤霞,张俊敏.豆科植物组织培养研究[J].植物学报,1992,(10):743-752.
[6]陈宝书.牧草饲料栽培学[M].北京:中国农业出版社,1955.
[7]胡迪先,封朝壁.白三叶草营养动态的研究[J].草业学报,1994,(2):44-50.
[8]吴春蕾,曹福磊,丁云洁,等.不同pH对甘草种子萌发及幼苗生长的影响[J].安徽农业科学,2011,39(14):8270-8272,8310.
[9]马成仓,洪法水.pH对油菜种子萌发和幼苗生长代谢的影响[J].作物学报,1998,24(4):509-512.
[10]胡雁春.模拟酸雨对白三叶草种子萌发及幼苗生理指标的影响[J].安徽农业科学,2014,42(1):85-86,89.
[11]王玉萍,董雯,张鑫,等.水杨酸对盐胁迫下花椰菜种子萌发及幼苗生理特性的影响[J].草业学报,2012,21(1):213-219.
[12]张侠,宋莉璐,魏艳丽,等.NaCl胁迫对三叶草种子萌发的影响[J].山东科学,2008(05):11-14.
[13]卢艳敏,苏长青,李会芬.不同盐胁迫对白三叶草种子萌发及幼苗生长的影响[J].草业学报,2013,22(4):123-129.
[14]沈洁,张辉,张雷,等.海水胁迫白三叶草种子萌发的影响[J].北方园艺,2012,(9):51-53.
[15]黄文娟,马晓玲,李军,等.红果小檗种子萌发特性研究[J].塔里木大学学报(自然科学版),2016,35(8):14-20.