| 2个超级杂交水稻剑叶主脉两侧SPAD值的差异表现 |
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| 引用本文： | 李杰,冯跃华,麻井彪,王旭,李香玲,叶勇,吴彦利,黄佑岗,牟桂婷.2个超级杂交水稻剑叶主脉两侧SPAD值的差异表现[J].核农学报,2017,31(4). |
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| 作者姓名： | 李杰 冯跃华 麻井彪 王旭 李香玲 叶勇 吴彦利 黄佑岗 牟桂婷 |
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| 作者单位： | 贵州大学农学院,贵州贵阳,550025 |
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| 基金项目： | 国家自然科学基金，公益性行业(农业)科研专项经费项目子项，贵州省农业科技攻关项目，贵州省作物学省级重点学科建设计划，贵州省普通高等学校粮油作物遗传改良与生理生态特色重点实验室项目 |
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| 摘 要： | 为探索水稻叶片SPAD值的分布特征,提高基于SPAD值水稻氮素营养诊断的精准度,以Q优6号和准两优527为材料,研究了6个不同施氮条件下超级杂交水稻主脉两侧SPAD值的差异表现。结果表明,2个超级杂交水稻剑叶两侧,一侧较为光滑,另一侧较为粗糙,光滑面或粗糙面居左或居右的概率接近50%,且光滑面SPAD值高于粗糙面SPAD值,粗糙面SPAD值的环比增长率绝对值一般高于光滑面。光滑面和粗糙面的SPAD差值主要集中在1.5~3.5之间,此范围内Q优6号和准两优527的次数分布率分别为40.67%和36.4%。SPAD归一化倒数值与施氮量、产量存在显著的线性相关关系,当Q优6号和准两优527的SPAD归一化倒数值为35~40和30~35时,施氮适宜,产量较高。本研究结果表明重视水稻叶片主脉两侧的差异可以提高诊断的精准性,为基于SPAD值的水稻氮素营养诊断提供了参考依据。
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| 关 键 词： | 水稻 光滑面 粗糙面 SPAD值 |
Differential Expression of SPAD Value on the Two Sides of Main Vein of the Flag Leaf in 2 Super Hybrid Rice |
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| LI Jie,FENG Yuehua,MA Jingbiao,WANG Xu,LI Xiangling,YE Yong,WU Yanli,HUANG Yougang,MOU Guiting.Differential Expression of SPAD Value on the Two Sides of Main Vein of the Flag Leaf in 2 Super Hybrid Rice[J].Acta Agriculturae Nucleatae Sinica,2017,31(4). |
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| Authors: | LI Jie FENG Yuehua MA Jingbiao WANG Xu LI Xiangling YE Yong WU Yanli HUANG Yougang MOU Guiting |
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| Abstract: | In older to explore the distribution characteristics of SPAD value in rice leaf and to improve the accuracy of the nitrogen nutrition diagnosis in rice based on SPAD value,differential expression of SPAD value on the sides of the main veins of the flag leaf in super hybrid rice were studied under the condition of six different nitrogen with Qyou6 and zhunliangyou527 as the materials.The results showed that a side is smooth and the other side is rough of the treatments,the probability of smooth or rough surface which was located at left or right side was close to 50％,and the SPAD value of smooth surface was significantly higher than that of rough surface,absolute value of chain growth rate of SPAD value of rough surface was greater than that of smooth surface.The difference of SPAD value between smooth surface and rough surface mostly concentrated in 1.5 and 3.5,with frequency distribution rate of Qyou6hao and zhunliangyou527 of 40.67％ and 36.4％,respectively.There was a significantly linear correlation between inverse of normalization SPAD value and fertilizer-N application rate as well as rice yield.It showed that nitrogen application rate and yield attain a higher level when the inverse of normalization SPAD value of Qyou6hao and zhunliangyou527 were in 35 to 40 and 30 to 35,respectively.The results of this study provided a reference for nitrogen nutrition diagnosis of rice based on SPAD value,and attention should be drawn to the difference of SPAD value on the two sides of main veins of rice leaf for enhancing the precision of nitrogen nutrition diagnosis. |
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| Keywords: | rice smooth surface rough surface SPAD value |
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