| 干旱胁迫和复水对‘张杂谷3号’光合特性和产量的影响 |
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| 引用本文： | 李丽丽,侯智远,卢海博,龚学臣.干旱胁迫和复水对‘张杂谷3号’光合特性和产量的影响[J].河北农业大学学报,2017,40(4). |
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| 作者姓名： | 李丽丽 侯智远 卢海博 龚学臣 |
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| 作者单位： | 河北北方学院农林科技学院,河北张家口,075002 |
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| 基金项目： | 国家科技支撑计划项目，张家口市科技攻关项目 |
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| 摘 要： | 为明确‘张杂谷3号’的抗旱高产机理,本试验以杂交谷子品种‘张杂谷3号’和常规谷子品种‘大同29’为试验材料,在人工控制遮雨棚的旱池栽培条件下,于谷子拔节期进行干旱胁迫后复水处理试验,测定了2个谷子叶片的光合指标、叶绿素荧光参数(初始荧光(Fo)、最大荧光(Fm)、PSII原初光能转化效率(Fv/Fm)、光化学猝灭系数(qP))、以及产量。结果表明:随着干旱胁迫天数的增加,‘张杂谷3号’和‘大同29’的Pn、Fv/Fm、Fv′/Fm′、qP、ФPSII均有下降趋势,但与‘大同29’相比,‘张杂谷3号’下降的百分率少:在干旱胁迫后21d,‘张杂谷3号’的Pn、Fv/Fm、Fv′/Fm′、ФPSII、qP分别下降5.83%,0.98%,9.48%,9.70%和14.76%,‘大同29’分别下降29.06%,3.05%、21.08%、15.35%和13.81%。复水后‘张杂谷3号’和‘大同29’的光合速率均有一定恢复,但‘张杂谷3号’明显的优于‘大同29’,在复水后21d,‘张杂谷3号’除ФPSII外,其它荧光参数分别恢复至比对照(正常供水)低0%,0.24%,0.74%,7.37%,-1.92%(高于对照水平);‘大同29’分别恢复至比对照低27.98%,2.81%,8.71%,12.65和6.20%。‘张杂谷3号’的产量比对照降低了18.61%,‘大同29’比对照降低了58.58%,表明‘张杂谷3号’较常规谷子有较强的抗旱性。
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| 关 键 词： | 干旱胁迫 复水 张杂谷 光合作用 产量 |
Influence of drought stress and rewaterring on the photosynthetic characteristics and yield of ‘Zhangzagu 3’ |
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| LI li-li,HOU Zhi-yuan,LU Hai-bo,GONG Xue-chen.Influence of drought stress and rewaterring on the photosynthetic characteristics and yield of ‘Zhangzagu 3’[J].Journal of Agricultural University of Hebei,2017,40(4). |
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| Authors: | LI li-li HOU Zhi-yuan LU Hai-bo GONG Xue-chen |
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| Abstract: | To study the drought-resistant and high-yield mechanism of hybrid millet,the influence of drought stress and rewatering on the photosynthetic characteristics and yield of hybrid millet were studied in this trial.The results indicated that:the photosynthetic parameters Pn,Fv/Fm,Fv'/Fm',ΦPSⅡ and qP of ‘Zhangzagu 3’ decreased less than ‘Datong 29’ within 21 days of drought stress and restored more than ‘Datong 29’ after rewatering 7 ds,14 ds and 21ds respectively.The Pn,Fv/Fm,Fv'/Fm',ΦPSⅡ and qP of ‘Zhangzagu 3’ declined 5.83％,0.98％,9.48％,9.70％ and 14.76％ respectively than control after 21 days of drought stress;While the Pn,Fv/Fm,Fv'/Fm',ΦPSⅡ and qP of ‘Datong 29’ declined 29.06％,3.05％,21.08％,15.35％ and 13.81％ respectively after 21 days of drought stress.After rewatering for 21 ds,the Pn,Fv/Fm,Fv'/Fm',ΦPSⅡ and qP of ‘Zhangzagu 3’ restored to 0％,0.24％,0.74％,7.37％ and-1.92％ less than control respectively;the Pn,Fv/Fm,Fv'/Fm',ΦPSⅡ and qP of ‘Datong29’ can only restored to 27.98％,2.81％,8.71％,12.65 and 6.20％ less than control.After harvesting,‘Zhangzagu 3’ has larger spike mass,higher 1,000-grain mass and yield than ‘Datong 29’ after 21ds drought stress in jointing stage. |
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| Keywords: | Setariaitalica (L ) Beauv drought stress rewatering ‘Zhangzagu’ yield photosynthesis |
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