Host preference of sweetpotato weevil, Cylas formicarius elegantulus (Summers): an example of Hopkins’ host-selection principle

2019 ◽  
Vol 13 (5) ◽  
pp. 779-786
Author(s):  
Jie Chen ◽  
Michael J. Stout ◽  
Julien Beuzelin ◽  
Tara P. Smith ◽  
Don LaBonte ◽  
...  
1989 ◽  
Vol 72 (3) ◽  
pp. 551
Author(s):  
Richard K. Jansson ◽  
Adrian G. B. Hunsberger ◽  
Scott H. Lecrone ◽  
Daniel F. Austin ◽  
G. William Wolfe

1985 ◽  
Vol 20 (3) ◽  
pp. 345-350 ◽  
Author(s):  
Michael A. Mullen ◽  
Alfred Jones ◽  
Donald R. Paterson ◽  
Thurman E. Boswell

Fourteen sweet potato [Ipomoea batatas (L.) Lam] cultivars and varieties were examined for resistance to the sweetpotato weevil [Cylas formicarius elegantulus (Summers)] in artificially infested fields in Yoakum, TX. One cultivar W-226, appeared to have a greater level of resistance than the other cultivars examined. The data are compared to earlier resistance trials to show that the germplasm presently available has greater levels of resistance than that in previous years. The resistance levels of “Resisto” and “Regal” for the past 4 years are discussed.


1986 ◽  
Vol 12 (6) ◽  
pp. 1489-1503 ◽  
Author(s):  
R. R. Heath ◽  
J. A. Coffelt ◽  
P. E. Sonnet ◽  
F. I. Proshold ◽  
B. Dueben ◽  
...  

HortScience ◽  
1993 ◽  
Vol 28 (4) ◽  
pp. 261E-261
Author(s):  
Paul G. Thompson ◽  
John C. Schneider ◽  
Boyett Graves

Narrow-sense heritabilities (h2) for sweetpotato weevil (Cylas formicarius elegantulus) resistance were estimated in 2 breeding populations. Population A included clones from US programs with previously reported moderate levels of weevil resistance. Population B included clones of US origin plusplant introductions from 14 countries. Parents and progenies were included in field evaluations with no wild weevils present. Weevils were cultured and applied to each plant. Population A was evaluated for 2 years and population B for 1. The GXE estimate for population A was also used for population B. Heritabilities were estimated by parent offspring regression and variance component analysis. Average h2 for percentage noninjured roots were 0.35 and 0.47 for population A and B, respectively. Intermating highest performing genotypes from both populations should increase h2 by increasing frequencies of resistance genes. A moderate rate of increase in resistance levels should result from selecting and intermating resistant genotypes.


2020 ◽  
Vol 144 (4) ◽  
pp. 335-340
Author(s):  
Phillip A. Wadl ◽  
Robert N. Trigiano ◽  
Sarah L. Boggess ◽  
Karen Harris‐Shultz ◽  
Livy H. Williams ◽  
...  

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