| 唐善军,高杜娟,陈友德,李友荣.水稻稻曲病不同病情指标间关系研究[J].植物保护,2014,40(1):154-156. |
| 水稻稻曲病不同病情指标间关系研究 |
| Relationship among different disease indicators of rice false smut |
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| DOI： |
| 中文关键词: 稻曲病 病情指标 相关性 |
| 英文关键词:rice false smut disease indicator correlation |
| 基金项目: |
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| 中文摘要: |
| 以120个湖南省水稻区域试验新组合（品系）为材料，调查、统计稻曲病发生危害水平，分析不同病情指标之间的关系。直线相关分析发现，稻曲病病蔸率、病穗率、平均每穗病粒数及病情指数两两之间均呈极显著正相关关系。病穗率与病情指数之间的相关系数为0.986，田间调查以病穗率为评价指标，既简便准确，还能通过回归方程进行数据转换。病穗率(x)与病情指数(y)间回归方程为y=0.343x-0.441(1.290)，病穗率(x)与平均每穗病粒数(y)间回归方程为y=0.029x-0.078(2.67 |
| 英文摘要: |
| In order to clarify the relationship among different disease indicators of rice false smut (RFS), the occurrence and damage of RFS on 120 new indica combinations (lines) from Hunan Rice Regional Trial were investigated and analyzed. Linear correlation analysis showed that diseased hill rate (DHR), diseased panicle rate (DPR), the average diseased grains per panicle (ADGPP) and disease index (DI) were significantly positively correlated with each other. The correlation coefficient between DPR and DI was up to 0.986. The DPR was a convenient and precise indicator for RFS evaluation. The regression equation between DPR (x) and DI (y), ADGPP (x) and DI (y), and DPR (x) and ADGPP(y) were y=0.343x-0.441 (1.290) and y=0.029x-0.078 (2.67 |
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