Consistent responses of yield and resistance of wheat cultivars to the root‐lesion nematode, Pratylenchus thornei, in the Australian northern subtropical region, but not in the temperate southern region

2021 ◽  
Author(s):  
K. J. Owen ◽  
J. P. Fanning ◽  
K. L. Reeves ◽  
G. J. Hollaway
Keyword(s):  
Southern Region ◽  
Wheat Cultivars ◽  
Root Lesion Nematode ◽  
Subtropical Region ◽  
Pratylenchus Thornei ◽  
Lesion Nematode

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.

Metabolomic profiling of wheat genotypes resistant and susceptible to root-lesion nematode Pratylenchus thornei

2021 ◽  
Author(s):  
Md Motiur Rahaman ◽  
Rebecca S. Zwart ◽  
Thusitha W. T. Rupasinghe ◽  
Helen L. Hayden ◽  
John P. Thompson
Keyword(s):  
Root Lesion Nematode ◽  
Wheat Genotypes ◽  
Metabolomic Profiling ◽  
Pratylenchus Thornei ◽  
Lesion Nematode

Fine mapping of root lesion nematode (Pratylenchus thornei) resistance loci on chromosomes 6D and 2B of wheat

2019 ◽  
Vol 133 (2) ◽  
pp. 635-652 ◽  
Author(s):  
Muhammad Shefatur Rahman ◽  
Katherine J. Linsell ◽  
Julian D. Taylor ◽  
Matthew J. Hayden ◽  
Nicholas C. Collins ◽  
...  
Keyword(s):  
Fine Mapping ◽  
Root Lesion Nematode ◽  
Pratylenchus Thornei ◽  
Lesion Nematode

Genetic analysis of resistance to root-lesion nematode (Pratylenchus thornei) in wheat

2004 ◽  
Vol 123 (3) ◽  
pp. 209-212 ◽  
Author(s):  
R. S. Zwart ◽  
J. P. Thompson ◽  
I. D. Godwin
Keyword(s):  
Genetic Analysis ◽  
Root Lesion Nematode ◽  
Pratylenchus Thornei ◽  
Lesion Nematode

A triumph of tolerance: managing the threat to wheat production by the root lesion nematode Pratylenchus thornei in the subtropical grain region of eastern Australia.

2021 ◽  
pp. 13-19
Author(s):  
Kirsty Owen
Keyword(s):  
Management Practices ◽  
Resistance Breeding ◽  
Nematode Resistance ◽  
Future Research ◽  
Root Lesion Nematode ◽  
Wheat Production ◽  
Production Region ◽  
Pratylenchus Thornei ◽  
Eastern Australia ◽  
Lesion Nematode

Abstract This chapter provides information on the economic importance, host range, geographical distribution, damage symptoms, biology and life cycle and interactions with other nematodes and pathogens of the root lesion nematode, Pratylenchus thornei, a severe and widespread threat to wheat production in the subtropical grain production region of eastern Australia. Some recommended integrated nematode management practices and future research for nematode resistance breeding are also presented.

Sign in / Sign up

Export Citation Format

Share Document