| 王婧,赵永敢,逄焕成,任天志,李玉义.不同食葵品种萌发期耐盐性研究[J].干旱地区农业研究,2011,29(4):29~35 |
| 不同食葵品种萌发期耐盐性研究 |
| Salt tolerance of Helianthus varieties at germination stage |
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| DOI：10.7606/j.issn.1000-7601.2011.04.06 |
| 中文关键词: 耐盐性 盐胁迫 萌发期 食葵 水培实验 |
| 英文关键词:salt tolerance salt stress germination stage Helianthus hydroponics |
| 基金项目:公益性行业（农业）科研专项（200903001-02）“黄河上中游次生盐碱地农业高效利用技术模式研究与示范”课题 |
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| 中文摘要: |
| 以食葵品种SH909、RH3146、RH318、DC6009、RH118、135为材料，比较研究不同NaCl浓度(0、0.10%、0.20%、0.30%、0.40%、0.50%、0.60%)处理下的食葵种子萌发期耐盐性。选择种子萌发指标、胚根生长指标与芽期抗逆生理指标进行比较，并对结果利用模糊数学隶属函数法进行综合评价。研究结果表明：食葵品种耐盐性强弱的顺序依次为：RH118＞RH3146＞RH318＞135＞SH909＞DC6009。RH118品种耐盐性最强，试验中表现出了较强的萌发能力与胚生长能力，发芽极限浓度为0.47%；RH3146次之，发芽极限浓度为0.41%，但萌发后，胚根生长能力较强。低浓度NaCl胁迫(NaCl≤0.10%)下，食葵品种受胁迫作用相对较小；高浓度NaCl
胁迫（NaCl≥0.20%）下，各品种的萌发能力、胚根生长能力均显著下降。不同品种对NaCl胁迫的生理反应也不同。 |
| 英文摘要: |
| The effect of NaCl on Helianthus seed germination after treated with different NaCl concentrations (0、0.10%、0.20%、0.30%、0.40%、0.50%、0.60%) were studied with Helianthus cultivars SH909，RH3146，RH318，DC6009，RH118 and 135. With different NaCl concentrations，the germination percentage，the relative germination percentage，seed potentiality，germination index，the relative root length were calculated．Changes in some physiological indexes derived from the embryos of Helianthus were measured under salt stresses. The salt tolerance characteristic and membership function were comprehensively evaluated with all above traits．The results showed that salt tolerance characteristic of different Helianthus cultivars were differential. The salt tolerance order of six varieties of Helianthus was：RH118＞RH3146＞RH318＞135＞SH909＞DC6009．RH118 was the most salt tolerant variety and the limit germination ratio was 0.47%, showed strong germination ability and embryos grow ability. Second is RH3146, the limit germination ratio was 0.
41%, showed more strong embryos grow ability. The effect of low concentration of NaCl treatment (NaCl≤0.10%) on Helianthus seed germination was relatively small. Under higher concentrations of salt（NaCl≥0.20%）, the overall trend was that the germination percentage，seed potentiality，germination index and root growth of different Helianthus seeds decreased with increasing salt content．The physiological reaction of different varieties was different under salt stress. |
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