| 金喜军,张盼盼,屈春媛,张玉先,金 毅,张俊杰,薛远财,李沅芹.烯效唑浸种对盐胁迫下糜子萌发和幼苗质量的调控效应[J].干旱地区农业研究,2015,33(6):149~154 |
| 烯效唑浸种对盐胁迫下糜子萌发和幼苗质量的调控效应 |
| Regulatory effects of uniconazole solution on seed germination and seedling quality of millet under salinity stress |
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| DOI：10.7606/j.issn.1000-7601.2015.06.25 |
| 中文关键词: 糜子 烯效唑 盐胁迫 萌发 幼苗质量 |
| 英文关键词:millet uniconazole salinity stress germination seedling quality |
| 基金项目:国家十二五科技支撑计划项目“糜黍丰产关键技术研究集成与示范”(2014BAD07B03)；公益性行业(农业)科研经费项目(20133007)；黑龙江省教育厅科研项目“DTA-6和S3307对糜子根系建成的调控及机理”(12541599)；国家杂粮工程技术研究中心组建项目(2011FU125X07) |
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| 中文摘要: |
| 试验研究了烯效唑浸种对盐胁迫下不同糜子品种萌发和幼苗质量的影响。结果表明：与不浸种（CK1）和蒸馏水浸种（CK2）相比，烯效唑浸种显著提高了盐胁迫下粘丰5号的发芽势和发芽率，而对齐黍1号的作用不显著，且高浓度浸种起抑制作用；烯效唑浸种处理明显抑制了盐胁迫下两个供试品种糜子幼苗株高，并且抑制作用随浸种浓度的提高而加重；除粘丰5号的T5处理外，其它浸种处理均显著或极显著地提高了盐胁迫下两个供试品种幼苗侧根数和侧根总长；不同浓度浸种处理均对盐胁迫下粘丰5号主根长起抑制作用，而高浓度烯效唑浸种处理（T4和T5）则对齐黍1号主根长起促进作用；不同浓度烯效唑浸种处理对盐胁迫下粘丰5号叶和齐黍1号叶、根中SOD活性起抑制作用，而T1和T2对粘丰5号根中SOD活性起一定促进作用，而适当浓度烯效唑浸种（25～100 mg·L-1）可有效提高两个供试品种叶和根的APX活性。综合分析可知，T3处理（100 mg·L-1）虽对盐胁迫下两个供试糜子品种萌发的促进作用不是最显著，甚至起到抑制作用，但可明显促进幼苗重量、侧根发育、保护酶活性，在实际生产中可通过加大播种量的方法保证苗齐、苗壮 |
| 英文摘要: |
| To study the effect of uniconazole on seed germination characteristics and seedling quality of millet under salinity stress, seeds soaked with uniconazole solution were used for analysis. The results showed that compared with no soak and soak in distilled water treatments, soak in uniconazole under salinity stress significantly increase the germination energy and germination rate of NF5, whereas did not affect or even inhibit those of QS1. Seedling heights of both NF5 and QS1 were inhibited by uniconazole, and the inhibitory effects became enhanced with the increase of uniconazole concentration. All soak treatments with uniconazole increased the lateral root number and total length of lateral root in both varieties, except for the T5 treatment on NF5. All uniconazole treatments inhibited main root length of NF5, while high concentrations (T4 and T5) increased that of QS1. Different soak treatments with uniconazole inhibited the activities of SOD in leaves and roots of NF5 and leaves of QS1, whereas T1 and T2 treatments increased those in root of QS1. Uniconazole with appropriate concentration (25～100 mg·L-1) elevated the activities of APX in leaves and roots of both varieties. In conclusion, although uniconazole treatment T3 (100 mg·L-1) had no positive or even negative functions on seed generation, it could enhance weight of seedling, promote development of lateral root, increase activities of protective enzymes, resulting in uniformed emergence of strong seedlings in the field through increasing sowing rate. |
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