Glandular Trichomes of Solanum neocardenasii Confer Resistance to Green Peach Aphid (Homoptera: Aphididae)

1986 ◽  
Vol 79 (5) ◽  
pp. 1264-1268 ◽  
Author(s):  
Stephen L. Lapointe ◽  
Ward M. Tingey
Keyword(s):  
Green Peach Aphid ◽  
Glandular Trichomes

Green peach aphid resistance by glandular trichomes inSolanum tuberosum xS. berthaultii hybrids

1982 ◽  
Vol 59 (6) ◽  
pp. 241-251 ◽  
Author(s):  
Ward M. Tingey ◽  
Robert L. Plaisted ◽  
Jean E. Laubengayer ◽  
Shawn A. Mehlenbacher
Keyword(s):  
Green Peach Aphid ◽  
Glandular Trichomes ◽  
Aphid Resistance

scholarly journals Inheritance of A and B Glandular Trichome Density and Polyphenol Oxidase Activity in Diploid Potatoes

1994 ◽  
Vol 119 (4) ◽  
pp. 829-832 ◽  
Author(s):  
Roger L. Vallejo ◽  
Wanda W. Collins ◽  
Robert H. Moll
Keyword(s):  
Polyphenol Oxidase ◽  
Green Peach Aphid ◽  
Additive Genetic Variance ◽  
Glandular Trichomes ◽  
Leaf Roll ◽  
Glandular Trichome ◽  
Progeny Testing ◽  
Trichome Density ◽  
Potato Leaf ◽  
Heritability Estimates

Glandular trichomes from some Solanum species have suppressed infestation by insects including green peach aphid, which is a main vector of potato virus Y (PVY) and potato leaf roll virus (PLRV), both of which contribute to a serious loss in potato production. Eight Solanum phureja Juz. et Buk.-S. stenotomum Juz. (Phu-Stn), three S. berthaultii Hawkes (Ber), nine F1 [(Phu-Stn) × Ber], fifteen backcross (BC) [(Phu-Stn) × F1], and seventeen reciprocal BC (BCR) [F1 × (Phu-Stn)] families were evaluated to determine the genetic variability and heritability of A and B glandular trichome density and polyphenol oxidase (PPO) activity. Experiments were carried out in completely randomized and randomized complete-block designs in the greenhouse. Genetic analysis was done using half-sib family and parent-offspring regression analysis. Phu-Stn showed a higher density of A trichomes than Ber and F1, while the BC and BCR had densities of A trichomes similar to Phu-Stn. B trichomes were not observed in Phu-Stn. Ber showed a high B trichome density, which was transmitted to the F1. In the BC, B trichomes were almost absent, but, in the BCR, the density of B trichomes was higher than that of BC. Ber and F1 had similar or higher PPO activity than Phu-Stn. PPO activity decreased in the BC, but, in the BCR, it was high and similar to Ber and F1. Broad-sense heritability estimates for A and B trichome density and PPO activity were from medium to high (0.48 to 0.77) in Phu-Stn, Ber, and F1. Narrow-sense heritability estimates for A and B trichome density and PPO activity were very low (0.04 to 0.24) in BC and BCR. In the BC families, additive genetic variance was very low for A and B trichome density and PPO activity. Half-sib family selection based on progeny testing and combined with BCs to Phu-Stn in subsequent generations would be a suggested breeding procedure to improve these traits. Phenotypic correlations between A and B trichome densities were 0.26 (F1) and 0.44 (BCR), between A trichome density and PPO activity 0.20 (F1) and 0.31 (BCR), and between B trichome density and PPO activity 0.04 (F1) and 0.27(BCR. Positive associations found between traits might facilitate simultaneous improvement for high levels of A and B trichome density and PPO activity.

scholarly journals Glandular trichomes that mediate resistance to green peach aphid in tomato genotypes from the cross between S. galapagense and S. lycopersicum

2019 ◽  
Vol 41 ◽  
pp. e42704 ◽  
Author(s):  
Alex Antonio Da Silva ◽  
Regis De Castro Carvalho ◽  
Marcela Carvalho Andrade ◽  
André Ricardo Zeist ◽  
Juliano Tadeu Vilela Resende ◽  
...  
Keyword(s):  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Glandular Trichomes ◽  
Glandular Trichome ◽  
The Other ◽  
Low Density ◽  
Leaf Trichomes ◽  
Type Iv ◽  
Resistance Tests ◽  
Tomato Genotypes

 The aim of this study was to verify the resistance of tomato genotypes (crossed with Solanum galapagense) to the green peach aphid, Myzus persicae, and the association of this resistance with glandular trichomes. Leaf trichomes were quantified for seven F2 genotypes of the BPX-486 population derived from crossing S. lycopersicum ‘TOM-684’ and S. galapagense accession ‘LA-1401’, for the commercial controls ‘TOM-584’ and ‘Santa Clara’, and for the accession ‘LA-1401’. After this evaluation, the genotypes were subjected to two nonpreference resistance tests of the green peach aphid in the laboratory, one with choice and the other without choice. Five genotypes (BPX-486-17, BPX-486-62, BPX-486-10, BPX-486-46, and BPX-486-08) and the accession LA-1401 exhibited a high density of type IV glandular trichomes and a lower mean number of nymphs and adults of M. persicae than two genotypes (BPX-486-313 and BPX-486-383) and the controls with a low density of glandular trichomes, in all the evaluations of both tests. Significant negative correlations between the density of type IV glandular trichomes of the tomato genotypes and the preference of M. persicae were found, which confirms the association between this type of glandular trichome and resistance to M. persicae in tomato genotypes.

An investigation into the ultrastructure and histochemistry of glandular trichomes of johnsongrass [Sorghum halepense (L.) Pers.] leaves

1992 ◽  
Vol 50 (1) ◽  
pp. 842-843 ◽  
Author(s):  
R. N. Paul ◽  
C. G. McWhorter ◽  
J.C. Ouzts
Keyword(s):  
Glandular Trichomes ◽  
Sorghum Halepense ◽  
Secretory Apparatus

Secretory trichomes have been described on johnsongrass leaves previously, but there is little knowledge of their ultrastructure or the nature of their secretion. Since johnsongrass is a pernicious weed, there is much interest in the nature of compounds found on its foliar surface, and the possible effect of these extrusions on herbicide efficiency. This report describes the results of an investigation into the ultrastructure of the secretory apparatus, and into the nature of the secretion.

Hop pellets type 90: ESEM studies of glandular trichomes morphological and structural changes during the different phases of hop processing

2011 ◽  
Vol 40 (2) ◽  
pp. 282-290 ◽  
Author(s):  
S. Srečec ◽  
V. Zechner-Krpan ◽  
S. Marag ◽  
G. Mršić ◽  
I. Špoljarić
Keyword(s):  
Structural Changes ◽  
Glandular Trichomes

Green peach aphid and potato leafroll virus: transmission and control

2020 ◽  
Author(s):  
R.A. Bagrov ◽  
◽  
V.I. Leunov
Keyword(s):  
Myzus Persicae ◽  
Green Peach Aphid ◽  
Virus Transmission ◽  
Potato Leafroll Virus ◽  
Factors Affecting ◽  
Potato Viruses ◽  
Tuber Necrosis ◽  
Aphid Vectors ◽  
Leafroll Virus ◽  
And Control

The mechanisms of transmission of potato viruses from plants to aphid vectors and from aphids to uninfected plants are described, including the example of the green peach aphid (Myzus persicae, GPA). Factors affecting the spreading of tuber necrosis and its manifestation on plants infected with potato leafroll virus (PLRV) are discussed. Recommendations for PLRV and GPA control in the field are given.

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