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Validation of field resistance to late leaf spot by using a molecular marker in groundnut

OAR@ICRISAT

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Relation http://oar.icrisat.org/9270/
http://www.intpbc2015.org/files/abstract2015.pdf
 
Title Validation of field resistance to late leaf spot by using a molecular marker in groundnut
 
Creator Yol, E
Upadhyaya, H D
Uzun, B
 
Subject Groundnut
 
Description Groundnut or peanut (Arachis hypogaea L.) is an important oilseed crop which is
valued as a rich source of high quality edible oil, protein, minerals and vitamins. It
offers nutritional and economic benefits to the consumers and farmers, respectively.
However there are many biotic and abiotic constraints to groundnut production in various
eco-agricultural systems. The late leaf spot (LLS) is one of the most widespread
and damaging foliar diseases of groundnut and it can reduce pod and fodder yields
to an extent of over 50%, also affects adversely quality of seeds. Much of the global
groundnut breeding efforts therefore have been directed to develop cultivars with high
yields and also incorporating genes conferring resistance or tolerance to LLS disease.
Integration of molecular marker aided selection with field based breeding is important
to enhance the precision and speed of developing peanut cultivars with LLS resistance.
In this perspective, many LLS resistance-related molecular markers have been
developed to aid in the selection processes. The SSR marker, PM 384, is one of these
markers and showed significant association with LLS resistance (Shoba et al. 2012,
Euphytica, 188:265-272). The groundnut collection including 39 genotypes was employed
for validating LLS resistance-linked marker (PM 384) and identifying resistant
individuals. These genotypes were evaluated in the field with nine point disease
scale to screen the genotypes for sources of resistance to LLS. Plants with a disease
score of 1-3 and 6-9 were designated as being resistant and susceptible, respectively.
After field evaluation, field scored genotypes were validated by LLS resistance using
the linked marker, PM 384.
 
Date 2015
 
Type Conference or Workshop Item
PeerReviewed
 
Format application/pdf
 
Language en
 
Rights —
 
Identifier http://oar.icrisat.org/9270/1/111.pdf
Yol, E and Upadhyaya, H D and Uzun, B (2015) Validation of field resistance to late leaf spot by using a molecular marker in groundnut. In: International Plant Breeding Congress (IPBC) and Eucarpia – Oil And Protein Crops Section Conference, November 01 - 05, 2015, WOW Kremlin Palace Hotel, Antalya, Turkey.