WANG Meng-meng,SUN Zi-qi,HU Yao-jun,et al.Identification and screening of peanut germplasm resources for resistance to southern blight[J].Chinese Journal of Oil Crop Sciences,2026,48(04):32-38.
WANG Meng-meng,SUN Zi-qi,HU Yao-jun,et al.Identification and screening of peanut germplasm resources for resistance to southern blight[J].Chinese Journal of Oil Crop Sciences,2026,48(04):32-38.DOI: 10.19802/j.issn.1007-9084.2025261.
Identification and screening of peanut germplasm resources for resistance to southern blight
a fungal soil-borne disease caused by the soil-borne fungus
Sclerotium
rolfsii
poses a severe threat to peanut production globally
especially in major cultivation regions of China
where it often leads to yield losses of over 50% and even total crop failure under severe infection condit
ions. In this study
eight peanut accessions with varying resistance levels were selected to optimize the inoculum dosage via the mycelia plug inoculation method. The results showed that a mycelia disc with 0.7 cm diameter effectively distinguished the resistance levels of different peanut accessions.Using this method
the resistance of 392 peanut accessions was evaluated at the seedling stage in an artificial climate chamber
leading to the identification of 19 moderately resistant (MR) materials. To further validate the stability of resistant germplasm
adult-plant resistance assays were conducted on all 392 accessions under both greenhouse and field conditions. Five moderately resistant (MR) accessions were screened in the greenhouse at the adult-plant stage
while three accessions exhibited resistance in the field at the adult-plant stage.Based on the evaluation results across diverse environments
two germplasm lines
Y135-241 and PI
were ultimately selected. This study will provide germplasm for genetic breeding of peanut resistance to southern blight
and lay a material foundation for subsequent mapping
cloning of resistance genes and dissection of molecular resistance mechanisms.
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references
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Screening and evaluation of peanut varieties resistant to Fusarium pod rot
Identification of peanut accessions with consistent resistance to stem rot
Screening and biocontrol characterization of Trichoderma spp. for controlling of peanut southern blight
Progress on pathogenicity differentiation in Sclerotium rolfsii isolates from peanut
A LIQUID CULTURE AND RESPONSES OF PEANUT RHIZOBIU MINOCULATION
Related Author
ZHOU Lin
CUI Kai-di
WANG Qin-qin
SONG Ji-yan
LIU Hao
DONG Xiao-yue
ZHAO Qing-chen
HE Lei-ming
Related Institution
Key Laboratory of Oil Crops in Huanghuaihai Plains, Ministry of Agriculture and Rural Affairs/Henan Provincial Key Laboratory for Oil Crops Improvement
College of Plant Protection, Henan Agricultural University/Henan Key Laboratory of Creation and Application of New Pesticid/Henan Research Center of Green Pesticide Engineering and Technology
Puyang Academy of Agricultural and Forestry Sciences
Oil Crops Research Institute, Chinese Academy of Agricultural Sciences/ Key Laboratory of Biology and Genetic Improvement of Oil Crops, Ministry of Agricultural and Rural Affairs
Nanchong Academy of Agricultural Sciences, Nanchong