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Leaf Damage Based Phenotyping Technique and Its Validation Against Fall Armyworm, Spodoptera frugiperda (J. E. Smith), in Maize

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Title Leaf Damage Based Phenotyping Technique and Its Validation Against Fall Armyworm, Spodoptera frugiperda (J. E. Smith), in Maize
Not Available
 
Creator P. Lakshmi Soujanya
J. C. Sekhar
K. R. Yathish
Chikkappa G. Karjagi
K. Sankara Rao
S. B. Suby
S. L. Jat
Bhupender Kumar
Krishan Kumar
Jyothilakshmi Vadessery
K. Subaharan
Vinay K. Kalia
A. Dhandapani
Sujay Rakshit
 
Subject maize germplasm
invasive insect pest
fall armyworm
artificial infestation
leaf damage rating
phenotyping technique
resistant genotypes
injury levels
 
Description Not Available
Globally, maize is an important cereal food crop with the highest production and
productivity. Among the biotic constraints that limit the productivity of maize, the recent
invasion of fall armyworm (FAW) in India is a concern. The first line of strategy available
for FAW management is to evaluate and exploit resistant genotypes for inclusion in an
IPM schedule. Screening for resistant maize genotypes against FAW is in its infancy in
India, considering its recent occurrence in the country. The present work attempts to
optimize screening techniques suited to Indian conditions, which involve the description
of leaf damage rating (LDR) by comparing injury levels among maize genotypes and to
validate the result obtained from the optimized screening technique by identification of
lines potentially resistant to FAW under artificial infestation. Exposure to 20 neonate FAW
larvae at the V5 phenological stage coupled with the adoption of LDR on a 1–9 scale
aided in preliminary characterize maize rize maize genotypes as potentially resistant,
moderately resistant, and susceptible. The LDR varies with genotype, neonate counts,
and days after infestation. The genotypes, viz., DMRE 63, DML-163-1, CML 71, CML
141, CML 337, CML 346, and wild ancestor Zea mays ssp. parviglumis recorded lower
LDR ratings against FAW and can be exploited for resistance breeding in maize.
Not Available
 
Date 2023-10-20T10:05:36Z
2023-10-20T10:05:36Z
2022-07-11
 
Type Research Paper
 
Identifier Not Available
1664-462X
http://krishi.icar.gov.in/jspui/handle/123456789/80725
 
Language English
 
Relation Article Number;906207
 
Publisher Frontiers in Plant Science