| 张向前,刘景辉,齐冰洁,郭晓霞,贺鹏程.复盐胁迫对几种燕麦种子萌发指数的影响[J].干旱地区农业研究,2011,29(6):233~238 |
| 复盐胁迫对几种燕麦种子萌发指数的影响 |
| Effects of mixed salt stress on seed germination index of seven canadian naked oat varieties |
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| DOI：10.7606/j.issn.1000-7601.2011.06.42 |
| 中文关键词: 复盐胁迫 裸燕麦 萌发指标 回归分析 |
| 英文关键词:mixed salt stress naked oat germination index regression analysis |
| 基金项目:国家自然科学基金项目(30660084)；内蒙古自然科学基金重大项目(200607010301)；公益性行业(农业)科研专项经费(NY-HYZX07-009-13)；现代农业产业技术体系建设专项资金 |
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| 中文摘要: |
| 采用加拿大7种燕麦(A.nuda)种子,在不同梯度的Na2SO4、NaCl等组分盐溶液中进行发芽试验。结果表明:复盐胁迫下,种子开始发芽的时间推迟,发芽过程延长,随着盐胁迫浓度的增加,7种燕麦种子的发芽率、发芽势和发芽指数、简易活力指数均有不同程度的降低,而盐害指数升高,且不同品种间存在显著或极显著差异;随复盐浓度的增大,对燕麦种子萌发的抑制程度加大。加9燕麦品种的半致死浓度和耐盐极限浓度最大,分别为2.6%和3.8%,加8燕麦品种的半致死浓度和全致死浓度最小,分别为1.4%和2.4%,其余各品种的半致死浓度和全致死浓度位于两者之间。综合分析,燕麦品种种子萌发的耐盐性大小顺序为:加9>加7>加10>加3>加6、加5>加8,电导率可作为检验燕麦种子耐盐性大小的较简捷指标,盐害指数可作为判断燕麦种子受害程度的指标。 |
| 英文摘要: |
| A germinative test of soaking 7 oats seeds from Canada in different concent ration of saltsolution composed by Na2SO4、NaCl and so on. The results showed that : under the stress of complex salts, the gemination postponed and lengthened, germinat ion ability 、gemination enerygy、gemination index and simple activity index of 7 oats seeds reduced
in different degree with the increase of salt concentration, but the salt injury index increased and there were significant or highly significant differences between different varieties. With the increase of the concentration of complex salts， the in-hibition degree to the gemination increased. Diferent oat varieties have various semi -lethal and whole-lethal concentra-tions. Among these seven naked oat varieties, Canadian 9 has the highest semi -lethal and whole lethal concentration, with 2.6% and 3.8% respectively; while Canadian 8 has the minimum semi-lethal and whole lethal concentration, with 1.4% and 2.4%. As the regression analysis ilustrated, the consequence of ability to tolerant mixed salt stress among seven Canadian naked oat varieties was afollow, Canadian 9> > Canadian 7> Canadian 10>Canadian 3> Canadian 6、Canadian 5> >Canadian 8. And, the conductivity can be used as a simple indicator to test salt tolerance of oat seed, the salt injuy index can be used an an indicator to judge the danger degree of oat seed. |
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