| 鞠乐,齐军仓,贺雪,王丹,侯忠庆,付强,熊显鹏.大麦种子萌发期对渗透胁迫的响应及
抗旱性鉴定指标的筛选[J].干旱地区农业研究,2013,31(1):172~176 |
| 大麦种子萌发期对渗透胁迫的响应及
抗旱性鉴定指标的筛选 |
| The response of barley to osmotic stress during germination stage and the screening of drought resistance indicators |
| |
| DOI：10.7606/j.issn.1000-7601.2013.01.32 |
| 中文关键词: 大麦 萌发期 渗透胁迫 抗旱性 形态指标 |
| 英文关键词:barley(Hordeum vulgare L.) germination stage osmotic stress drought resis
tance morphological parameter |
| 基金项目:现代农业产业技术体系建设专项资金资助（CARS-05）；兵团动植物新品种选育科技攻关专项（2011BA002）；石河子大学科学技术研究发展计
划“动植物育种专项”（gxjs2011-yz05） |
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| 摘要点击次数: 244 |
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| 中文摘要: |
| 选用4份大麦材料，采用0%、5%、10%、15%、20%
（W/V）PEG8000溶液模拟干旱胁迫处理，研究大麦种子萌发期发芽势、发芽率、根冠比、物
质转运速率等形态生长发育指标对渗透胁迫的响应，进行抗旱性评价，筛选抗旱性鉴定指标
。结果表明，随着渗透胁迫程度的增大，对大麦种子萌发产生显著的抑制作用，各指标对
渗透胁
迫的响应并不一致；20%PEG8000是较适宜的抗旱性鉴定浓度；初步推断胚根长、胚芽长、胚
芽干重、物质转运速率可以作为大麦种子萌发期快速、有效的抗旱性鉴定指标；参试品种抗
旱性强弱依次为Z027S078T、Z182U038V、Z037P017Q-1、Z039P046Q。 |
| 英文摘要: |
| The response of the index of germination potential, germination rate, the ratio of root shoot, dry matter translocation rate to osmotic stress of four barley genotypes was studied with adoption of 0%, 5%, 10%,
15%, 20% (W/V) PEG8000 solution as drought stress treatment and the drought res
istance and screening index of drought resistance of four barley genotypes were
evaluated in this paper. The results showed that, along with the increase of osm
otic stress, the inhibitory effect on seed germination was significant; the resp
onse of index to water stress was conflicting; the suitable PEG8000 concentratio
n for drought resistance identification was 20%; the length of radicle, the leng
th of germ, the dry weight of germ and dry matter translocation rate could be us
ed as effective and fast indicators for drought resistance of barley during germ
ination stage; the drought-resistant ability of four genotypes was as as follow
s: Z027S078T, Z182U038V, Z037P017Q-1 and Z039P046Q. |
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