Oviposition-induced indirect defence trait in wild and cultivated maize against spotted stemborer (Chilo partellus)

2016 ◽  
Author(s):  
Daniel Munyao Mutyambai
Keyword(s):  
Chilo Partellus ◽  
Indirect Defence

Amino and fatty acids contributing to antibiosis against Chilo partellus (Swinhoe) in maize

2021 ◽  
Author(s):  
Yogesh Yele ◽  
Mukesh K. Dhillon ◽  
Aditya K. Tanwar ◽  
Sandeep Kumar
Keyword(s):  
Fatty Acids ◽  
Chilo Partellus

scholarly journals Growing up aspen: ontogeny and trade-offs shape growth, defence and reproduction in a foundation species

2020 ◽  
Author(s):  
Christopher T Cole ◽  
Clay J Morrow ◽  
Hilary L Barker ◽  
Kennedy F Rubert-Nason ◽  
Jennifer F L Riehl ◽  
...  
Keyword(s):  
Intraspecific Variation ◽  
Genotypic Variation ◽  
Chemical Defence ◽  
Extrafloral Nectaries ◽  
Foundation Species ◽  
Community Genetics ◽  
Indirect Defence ◽  
Juvenile Period ◽  
Trade Offs ◽  
Sex Marker

Abstract Background and Aims Intraspecific variation in foundation species of forest ecosystems can shape community and ecosystem properties, particularly when that variation has a genetic basis. Traits mediating interactions with other species are predicted by simple allocation models to follow ontogenetic patterns that are rarely studied in trees. The aim of this research was to identify the roles of genotype, ontogeny and genotypic trade-offs shaping growth, defence and reproduction in aspen. Methods We established a common garden replicating >500 aspen genets in Wisconsin, USA. Trees were measured through the juvenile period into the onset of reproduction, for growth, defence chemistry (phenolic glycosides and condensed tannins), nitrogen, extrafloral nectaries, leaf morphology (specific leaf area), flower production and foliar herbivory and disease. We also assayed the TOZ19 sex marker and heterozygosity at ten microsatellite loci. Key Results We found high levels of genotypic variation for all traits, and high heritabilities for both the traits and their ontogenetic trajectories. Ontogeny strongly shaped intraspecific variation, and trade-offs among growth, defence and reproduction supported some predictions while contradicting others. Both direct resistance (chemical defence) and indirect defence (extrafloral nectaries) declined during the juvenile stage, prior to the onset of reproduction. Reproduction was higher in trees that were larger, male and had higher individual heterozygosity. Growth was diminished by genotypic allocation to both direct and indirect defence as well as to reproduction, but we found no evidence of trade-offs between defence and reproduction. Conclusions Key traits affecting the ecological communities of aspen have high levels of genotypic variation and heritability, strong patterns of ontogeny and clear trade-offs among growth, defence and reproduction. The architecture of aspen’s community genetics – its ontogeny, trade-offs and especially its great variability – is shaped by both its broad range and the diverse community of associates, and in turn further fosters that diversity.

scholarly journals Survey on the Incidence of Chilo partellus (Swinhoe) in Krishna and Guntur Districts of Andhra Pradesh, India

2019 ◽  
Vol 8 (06) ◽  
pp. 3131-3135
Author(s):  
K. Anil Kumar ◽  
T. Madhumathi ◽  
D.V. Sai Ram Kumar ◽  
N. Raj Kumar ◽  
Sk. Nafeez Umar
Keyword(s):  
Chilo Partellus ◽  
Andhra Pradesh

scholarly journals Incidence of Maize Stem Borer, Chilo partellus (Swinhoe) in Relation to Abiotic Factors on Maize

2019 ◽  
Vol 8 (06) ◽  
pp. 678-683
Author(s):  
Insha Hamid ◽  
R.K. Nehru ◽  
A.R. Wani ◽  
S.S. Pathania ◽  
Qurat Ul Ain ◽  
...  
Keyword(s):  
Chilo Partellus ◽  
Abiotic Factors ◽  
Stem Borer
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