| 武永胜,薛晖,刘洋,龚月桦.持绿型小麦叶片衰老和叶绿素荧光特征的研究[J].干旱地区农业研究,2010,28(4):117~122 |
| 持绿型小麦叶片衰老和叶绿素荧光特征的研究 |
| Study on senescence and chlorophyll fluorescence traits of stay-green leaf in wheat |
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| DOI：10.7606/j.issn.1000-7601.2010.04.22 |
| 中文关键词: 小麦 持绿 绿叶面积 叶绿素荧光 |
| 英文关键词:stay-green wheat green leaf area chlorophyll fluorescence |
| 基金项目:国家自然科学青年基金(30600075)；西北农林科技大学青年学术骨干支持计划 |
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| 摘要点击次数: 217 |
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| 中文摘要: |
| 选用4个小麦品种对其开花后绿叶面积、色素含量、丙二醛(MDA)含量及旗叶叶绿素荧光参数进行了测定分析。结果表明:持绿型小麦的绿叶面积显著高于非持绿型小麦,且生育后期下降缓慢;生育后期持绿型小麦叶片色素含量降低缓慢;随着生育进程推进,小麦叶片丙二醛(MDA)含量都呈上升趋势,与非持绿型小麦比较,持绿型小麦MDA上升缓慢且维持较低水平;生育后期持绿型小麦叶片的Fv/Fm、Fv/Fo、qP、PSⅡ、ETR明显高于非持绿型小麦,而qN明显低于非持绿型小麦;持绿型小麦产量较高,收获指数大。总之,持绿型小麦生育后期叶片衰老缓慢,光合功能维持时间长,光合产物积累多,具有较好的增产优势。 |
| 英文摘要: |
| In order to investigate thoroughly the senescence and chlorophyll fluorescence traits of stay-green leaf in
wheat, and to provide some theoretical base to screen for high yield wheat varieties in Northwest China, the green leaf area , pigment content, MDA content and the chlorophyll fluorescence parameters after anthesis were measured in 4 winter wheat varieties . The result showed that: (1) The green leaf area of stay-green wheat was obviously higher than non stay-green wheat, it decreased slowly at the late grain filling stage. (2) The pigment content of leaf in stay-green wheat de-creased more slowly at the late grain filling stage. (3) The MDA content of leaves in wheat showed an increasing trend,but the MDA content of stay-green wheat increased more slowly and kept a lower level than non stay-green wheat. (4)During the late grain flling, the Fv/ Fm, Fu/Fo, qP, φPSⅡ and ETR of stay-green wheat were obviously higher than the non stay-green wheat, but the qN of stay-green wheat was obviously lower than the non stay-green wheat. (5) The grain yield of stay-green wheat was high. All these suggested that the slower leaf senescence and longer photosynthesis period at the late grain filling stage of stay-green wheat led to a higher yield. So the stay-green wheat has better produc-tion superiority. |
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