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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
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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
Jagadish Patil
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 V 5 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.
ICAR-NASF
 
Date 2022-12-20T03:52:56Z
2022-12-20T03:52:56Z
2022-07-11
 
Type Research Paper
 
Identifier P Lakshmi Soujanya, JC Sekhar, KR Yathish,  Chikkappa G Karjagi, K.Sankara Rao, Suby SB , S. L. Jat, Bhupender Kumar, Krishan Kumar Jyothilakshmi Vadessery, K. Subaharan, Jagadish Patil Vinay K Kalia, A. Dhandapani, Sujay Rakshit. 2022. Leaf damage based phenotyping technique and its validation against fall armyworm, Spodoptera frugiperda (J. E. Smith) in maize. Frontiers in Plant Science 13: 906207
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http://krishi.icar.gov.in/jspui/handle/123456789/75223
 
Language English
 
Relation Not Available;
 
Publisher Frontiers in Plant Science