scholarly journals Evaluation of Host Plant Suitability to the Green Leafhopper, Nephotettix spp. (Homoptera : Cicadellidae)by Different Criteria

1990 ◽  
Vol 25 (1) ◽  
pp. 49-57 ◽  
Author(s):  
Jianjun LIU ◽  
Shozo TAKAHASHI
Keyword(s):  
Host Plant ◽  
Green Leafhopper ◽  
Host Plant Suitability

scholarly journals Plant sterols and host plant suitability for a phloem-feeding insect

2010 ◽  
Vol 25 (3) ◽  
pp. 484-491 ◽  
Author(s):  
Spencer T. Behmer ◽  
Robert J. Grebenok ◽  
Angela E. Douglas
Keyword(s):  
Host Plant ◽  
Plant Sterols ◽  
Host Plant Suitability ◽  
Phloem Feeding

Ozone-induced changes in host-plant suitability: Interactions ofKeiferia lycopersicella andLycopersicon esculentum

1987 ◽  
Vol 13 (1) ◽  
pp. 203-218 ◽  
Author(s):  
John T. Trumble ◽  
J. Daniel Hare ◽  
Robert C. Musselman ◽  
Patrick M. McCool
Keyword(s):  
Host Plant ◽  
Host Plant Suitability ◽  
Induced Changes

Evaluation of host plant suitability and efficacy of chemical and biological insecticides and insect nets for controlling Liothrips wasabiae (Thysanoptera:Phlaeothripidae)

2020 ◽  
Vol 55 (3) ◽  
pp. 309-317
Author(s):  
Kentaro Matsuda ◽  
Daisuke Sasaki ◽  
Hajime Haga ◽  
Takuya Nishijima ◽  
Yuka Hagiwara ◽  
...  
Keyword(s):  
Host Plant ◽  
Host Plant Suitability

scholarly journals Sensory assessment of Cercospora beticola sporulation for phenotyping the partial disease resistance of sugar beet genotypes

Plant Methods ◽  
2019 ◽  
Vol 15 (1) ◽  
Author(s):  
Erich-Christian Oerke ◽  
Marlene Leucker ◽  
Ulrike Steiner
Keyword(s):  
Disease Resistance ◽  
Sugar Beet ◽  
Host Plant ◽  
Hyperspectral Imaging ◽  
Leaf Spot ◽  
Quantitative Resistance ◽  
Cercospora Beticola ◽  
Specific Reference ◽  
Full Potential ◽  
Host Plant Suitability

Abstract Background Due to its high damaging potential, Cercospora leaf spot (CLS) caused by Cercospora beticola is a continuous threat to sugar beet production worldwide. Breeding for disease resistance is hampered by the quantitative nature of resistance which may result from differences in penetration, colonization, and sporulation of the pathogen on sugar beet genotypes. In particular, problems in the quantitative assessment of C. beticola sporulation have resulted in the common practice to assess field resistance late in the growth period as quantitative resistance parameter. Recently, hyperspectral sensors have shown potential to assess differences in CLS severity. Hyperspectral microscopy was used for the quantification of C. beticola sporulation on sugar beet leaves in order to characterize the host plant suitability / resistance of genotypes for decision-making in breeding for CLS resistance. Results Assays with attached and detached leaves demonstrated that vital plant tissue is essential for the full potential of genotypic mechanisms of disease resistance and susceptibility. Spectral information (400 to 900 nm, 160 wavebands) of CLSs recorded before and after induction of C. beticola sporulation allowed the identification of sporulating leaf spot sub-areas. A supervised classification and quantification of sporulation structures was possible, but the necessity of genotype-specific reference spectra restricts the general applicability of this approach. Fungal sporulation could be quantified independent of the host plant genotype by calculating the area under the difference reflection spectrum from hyperspectral imaging before and with sporulation. The overall relationship between sensor-based and visual quantification of C. beticola sporulation on five genotypes differing in CLS resistance was R2 = 0.81; count-based differences among genotypes could be reproduced spectrally. Conclusions For the first time, hyperspectral imaging was successfully tested for the quantification of sporulation as a fungal activity depending on host plant suitability. The potential of this non-invasive and non-destructive approach for the quantification of fungal sporulation in other host–pathogen systems and for the phenotyping of crop traits complex as sporulation resistance is discussed.

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