Highly infested soils undermine the use of resistant olive rootstocks as a control method of verticillium wilt

2020 ◽  
Vol 70 (1) ◽  
pp. 144-153
Author(s):  
Pedro Valverde ◽  
Carlos Trapero ◽  
Octavio Arquero ◽  
Nicolás Serrano ◽  
Diego Barranco ◽  
...  
Keyword(s):  
Verticillium Wilt ◽  
Control Method

scholarly journals Long-Term Effect of Biological Soil Disinfestation on Verticillium Wilt

Plant Disease ◽  
2004 ◽  
Vol 88 (7) ◽  
pp. 688-694 ◽  
Author(s):  
Jan-Kees C. Goud ◽  
Aad J. Termorshuizen ◽  
Wim J. Blok ◽  
Ariena H. C. van Bruggen
Keyword(s):  
Verticillium Wilt ◽  
Control Method ◽  
Italian Ryegrass ◽  
Plastic Mulch ◽  
Soil Disinfestation ◽  
Pests And Diseases ◽  
Long Term Effect ◽  
Plastic Mulching ◽  
Biological Soil Disinfestation

Biological soil disinfestation (BSD), involving incorporation of grass combined with plastic mulching, eliminates many soilborne pests and diseases through the creation of anaerobic conditions. BSD was compared at two locations with a nontreated control, Italian ryegrass amendment alone, and plastic mulch alone. After the soil treatments, plots were cropped with Acer platanoides and Catalpa bignonioides and grown for 4 years. Relative to the control, soil inoculum levels of Verticillium dahliae were reduced by 85% after BSD and did not increase for 4 years. Populations of Pratylenchus fallax, known for their interaction with V. dahliae, in the soil and in roots were reduced by 95 to 99%. The incidence of infection by V. dahliae was reduced by 80 to 90%. Verticillium wilt severity was significantly reduced in A. platanoides in all 4 years at one location and in the first 2 years at the other location, and significantly fewer plants died at one location. Shoot length and trunk width were larger after BSD compared with the control at one location. Market value of the crop in BSD plots was up to € 140,000 ha-1 higher for A. platanoides and up to € 190,000 ha-1 higher for C. bignonioides than in the untreated control. BSD is an effective, economically profitable, and environmentally friendly control method for tree nurseries.

scholarly journals Assessment of Maternal Effects and Genetic Variability in Resistance to Verticillium dahliae in Olive Progenies

Plants ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 1534
Author(s):  
Pedro Valverde Caballero ◽  
Carlos Trapero Ramírez ◽  
Diego Barranco Navero ◽  
Francisco J. López-Escudero ◽  
Ana Gordon Bermúdez-Coronel ◽  
...  
Keyword(s):  
Verticillium Wilt ◽  
Verticillium Dahliae ◽  
Control Method ◽  
Integrated Management ◽  
Genetic Resistance ◽  
Resistance Mechanisms ◽  
Plant Diseases ◽  
Conidial Suspension ◽  
Reciprocal Crosses ◽  
Olive Trees

The use of genetic resistance is likely the most efficient, economically convenient and environmentally friendly control method for plant diseases, as well as a fundamental piece in an integrated management strategy. This is particularly important for woody crops affected by diseases in which mainly horizontal resistance mechanisms are operative, such as Verticillium wilt, caused by Verticillium dahliae. In this study, we analyzed the variability in resistance to Verticillium wilt of olive trees in progenies from five crosses: ‘Picual’ × ‘Frantoio’, ‘Arbosana’ × ‘Koroneiki’, ‘Sikitita’ × ‘Arbosana’, ‘Arbosana’ × ‘Frantoio’ and ‘Arbosana’ × ‘Arbequina’ and their respective reciprocal crosses. Additionally, seedlings of ‘Picual’ and ‘Frantoio’ in open pollination were used as controls. In October 2016 and 2018, the fruits were harvested, and seeds germinated. Six-week-old seedlings were inoculated by dipping their bare roots in a conidial suspension of V. dahliae, and disease progress in terms of symptom severity and mortality was evaluated weekly. Additionally, seedling growth was evaluated every two weeks. At the end of the experiment, no significant differences were found for any of the assessed parameters when reciprocal crosses were compared. These results suggest that there is no maternal or paternal effect in regard to the heritability of resistance. In addition, this study identifies the best crosses for obtaining the highest number of resistant genotypes, highlighting the importance of the selection of specific cultivars to optimize the breeding process.

A distributed access control method for wireless LANs in shadowing environments

2001 ◽  
Vol 84 (9) ◽  
pp. 16-26
Author(s):  
Tadao Saito ◽  
Hitoshi Aida ◽  
Terumasa Aoki ◽  
Soichiro Hidaka ◽  
Tredej Toranawigtrai ◽  
...  
Keyword(s):  
Access Control ◽  
Control Method ◽  
Wireless Lans ◽  
Distributed Access Control

Proposal for the New Control Method Having High Responsiveness and Robustness for the Boost-Type DC-DC Converter

2018 ◽  
Vol 138 (4) ◽  
pp. 395-404 ◽  
Author(s):  
Taichi Kawakami ◽  
Toshikazu Harada ◽  
Masayoshi Yamamoto ◽  
Kazuhiro Umetani
Keyword(s):  
Control Method ◽  
High Responsiveness
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