scholarly journals Host suitability of wheat cultivars to Pratylenchus thornei Sher & Allen, 1953 and Pratylenchus neglectus (Rensch, 1924) (Tylenchida: Pratylenchidae)

2021 ◽  
Vol 45 (2) ◽  
pp. 235-243
Author(s):  
Nagihan DUMAN ◽  
Göksel ÖZER ◽  
Abdelfattah DABABAT ◽  
Mustafa İMREN
Keyword(s):  
Host Suitability ◽  
Wheat Cultivars ◽  
Pratylenchus Neglectus ◽  
Pratylenchus Thornei

Pratylenchus thornei populations reduce water uptake in intolerant wheat cultivars

2014 ◽  
Vol 161 ◽  
pp. 1-10 ◽  
Author(s):  
J.P.M. Whish ◽  
J.P. Thompson ◽  
T.G. Clewett ◽  
J.L. Lawrence ◽  
J. Wood
Keyword(s):  
Water Uptake ◽  
Wheat Cultivars ◽  
Pratylenchus Thornei

Host suitability of common agricultural crops to Scutylenchus rugosus (Siddiqi, 1963) Siddiqi, 1979 in Iran, with a focus on wheat and maize

Nematology ◽  
2018 ◽  
Vol 20 (1) ◽  
pp. 33-42
Author(s):  
Kobra Hashemi ◽  
Akbar Karegar
Keyword(s):  
Sugar Beet ◽  
Growth Parameters ◽  
Host Suitability ◽  
Agricultural Crops ◽  
Wheat Cultivars ◽  
Negative Effects ◽  
Maize Hybrids ◽  
Reproduction Factor

The host suitability of alfalfa, barley, cantaloupe, cowpea, cucumber, maize, millet, rapeseed, spinach, squash, sugar beet, tomato and wheat to Scutylenchus rugosus was evaluated under glasshouse and outdoor conditions. The results showed that reproduction factor () of the nematode on wheat and barley was higher than 2.4 and on maize hybrids (SC 704 and MV 524), spinach and alfalfa was between 0.9-2.1. In two other experiments, the effects of field populations of S. rugosus on growth of three Iranian wheat cultivars and three maize hybrids were investigated. The results showed that the nematode had significant negative effects on growth parameters of the plants. Wheat cultivars were more suitable hosts and of the nematode on them was significantly higher than on the maize hybrids.

scholarly journals Impacts of Root-Lesion Nematode (Pratylenchus thornei) on Plant Nutrition, Biomass, Grain Yield and Yield Components of Susceptible/Intolerant Wheat Cultivars Determined by Nematicide Applications

Agronomy ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 296
Author(s):  
John P. Thompson ◽  
Timothy G. Clewett
Keyword(s):  
Grain Yield ◽  
Yield Components ◽  
Root Zone ◽  
Wheat Cultivars ◽  
Root Lesion Nematode ◽  
Population Densities ◽  
Poor Growth ◽  
Pratylenchus Thornei ◽  
Lesion Nematode ◽  
The Impact

Field experiments testing rates of various nematicides, with and without NPZn fertiliser, were analysed to investigate how root-lesion nematode (Pratylenchus thornei) affects growth and yield components of susceptible/intolerant wheat cultivars in a subtropical environment. Plant response to nematode attack was assessed by regression and principal components analyses of various plant parameters at different crop development stages, in relation to different nematode population densities in the roots and root-zone soil. Reduction in P. thornei population densities by nematicides resulted in increased numbers of tillers, plant biomass, N and P concentrations and uptakes, numbers of spikes and kernels, and grain yield. Grain yield was strongly correlated with number of kernels, biomass and number of spikes, and negatively correlated with number of P. thornei in the root-zone soil at stem elongation. This study showed that P. thornei damage to roots decreased wheat yield through limiting N and P concentrations and uptakes in plant tops causing poor growth that commenced early and continued through the life of the crop. Genetic, environmental and management factors that reduce population densities of P. thornei, and decrease the impact of the nematodes starting in early crop growth, will greatly increase spike and kernel numbers and grain yield.

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