Development and validation of a standard area diagram set to aid estimation of bacterial spot severity on tomato leaves
Development and validation of a standard area diagram set to aid estimation of bacterial spot severity on tomato leaves
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开发和验证标准面积图，以帮助估计番茄叶片上细菌斑点的严重程度
DOI：
10.1007/s10658-015-0642-7
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发表时间：
2015-03
影响因子：
1.8
通讯作者：
Yang Wencai
中科院分区：
文献类型：
--
作者：
Duan Junjie;Zhao Baimei;Wang Yuqing;Yang Wencai
A standard area diagram (SAD) set to aid assessment of bacterial spot (caused byXanthomonasspp.) severity on tomato (Solanum lycopersicumL.) leaves was prepared and evaluated for improving accuracy, precision and reliability of visual estimates. The proposed SAD set contains illustrations of leaves with 12 distinct disease severity values from 0.5 to 90 %, and was validated by 12 raters without experience of plant disease evaluation. The severity of bacterial spot on 150 images of diseased tomato leaves was first estimated without the SADs, and then assessed using the SADs by the same group of raters. Regression analysis and Lin’s concordance correlation (ρc) analysis of estimated versus true disease severity (based on image analysis) showed precision and accuracy improved for all raters using the SADs. The SAD set improved accuracy (correction factor,Cb= 0.91 and 1.00, without and with the SADs, respectively) and agreement (ρc= 0.83 and 0.96, without and with the SADs, respectively) of the estimates of severity. Severity estimates were more reliable using the SADs (coefficient of determination,R2= 0.74–0.94 without the SADs, andR2= 0.82–0.95 with the SADs, and intra-class correlationρ= 0.85 without the SADs andρ= 0.91 using the SADs). The SADs proposed in this study will improve the accuracy and reliability of estimates of bacterial spot severity on tomato leaves for inexperienced raters, and could be used for assessing other bacterial disease severity on tomato leaves.
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影响因子：
2.7
作者：
C. Bock;T. Gottwald;P. Parker
通讯作者：
C. Bock;T. Gottwald;P. Parker
影响因子：
4.5
作者：
Bock, C. H.;Parker, P. E.;Gottwald, T. R.
通讯作者：
Gottwald, T. R.
影响因子：
3.2
作者：
J. Horsfall
通讯作者：
J. Horsfall
DOI：
--
发表时间：
1987
期刊：
--
影响因子：
--
作者：
R. Lelliott;D. Stead
通讯作者：
R. Lelliott;D. Stead
影响因子：
1.8
作者：
Ricardo Braido;A. M. O. Gonçalves-Zuliani;P. T. R. Nocchi;J. B. Junior;V. Janeiro;C. Bock;W. Nunes
通讯作者：
Ricardo Braido;A. M. O. Gonçalves-Zuliani;P. T. R. Nocchi;J. B. Junior;V. Janeiro;C. Bock;W. Nunes