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- W646329352 abstract "Root-lesion nematodes (Pratylenchus thornei and P. neglectus), attack wheat roots, causing inefficient uptake of soil nutrients and water, resulting in chlorosis, stunting, and reduced tillering, biomass, and grain yield. These two species occur widely and losses to the Australian grains industry are estimated at $260m/annum. Wheat lines with tolerance to P. thornei, the dominant species in northern Australia, have been developed but they still allow nematodes to multiply in their roots. Because P. thornei completes a life cycle in 4-6 weeks under favourable conditions, populations can build rapidly on susceptible wheat. One tolerant selection (GS50a) from the intolerant variety Gatcher, has been shown to have resistance with the nematodes in its roots exhibiting a lower rate of reproduction. It is highly desirable to obtain more effective and diverse sources of resistance for effective long-term control. Resistance to cereal cyst nematode (CCN, Heterodera avenae), which has been a problem in southern Australia has been found in Aegilops tauschii the D-genome donor to bread wheat. This paper reviews initial research to identify resistance to P. thornei in Ae. tauschii, then subsequent research to identify and characterise resistance in synthetic hexaploid wheats (AABBDD) produced from the hybridisation of Ae. tauschii with durum wheats (AABB)." @default.
- W646329352 created "2016-06-24" @default.
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- W646329352 date "2008-01-01" @default.
- W646329352 modified "2023-09-27" @default.
- W646329352 title "Synthetic hexaploid wheats for resistance to root-lesion nematodes" @default.
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