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Morpho-physiological traits and leaf surface chemicals as markers conferring resistance to sorghum shoot fly (Atherigona soccata Rondani)

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Relation http://oar.icrisat.org/11832/
https://doi.org/10.1016/j.fcr.2020.108029
doi:10.1016/j.fcr.2020.108029
 
Title Morpho-physiological traits and leaf surface chemicals as markers conferring resistance to sorghum shoot fly (Atherigona soccata Rondani)
 
Creator Arora, N
Mishra, S P
Nitnavare, R B
Jaba, J
Kumar, A A
Bhattacharya, J
Sohu, R S
Sharma, H C
 
Subject Sorghum
Plant Disease
 
Description Sorghum shoot fly, Atherigona soccata,causes substantial economic losses in sorghum globally. Cultural practices
and host plant resistance are effective measures for mitigating the losses caused by sorghum shoot fly. Therefore,
we evaluated 32 sorghum genotypes consisting of a set of 10 restorer lines, 10 CMS (cytoplasmic male-sterile)
lines and their respective maintainers exhibiting resistance/susceptibility to shoot fly along with resistant and
susceptible checks under field conditions. The traits such as leaf glossiness, leaf sheath pigmentation, percentage
plants with shoot fly deadhearts and number of shoot fly eggs per plant were used as morphological markers for
selecting genotypes with resistance to shoot fly during the rainy and post rainy seasons of 2016 and 2017. The
test material was also subjected to biochemical analysis (total soluble sugars, protein and tannin contents), while
the leaf surface chemicals were analysed by GC–MS to identify the compounds associated with resistance/susceptibility
to shoot fly. The genotypes differed significantly for all the traits, except percentage plants with shoot
fly deadhearts during the 2016 rainy season. The genotypes ICSB 458, ICSA/B 467, ICSA/B 487, ICSA/B 14037,
IS 18551 and ICSV 93046 exhibited moderate to high levels of resistance to shoot fly based on number of plants
with shoot fly deadhearts, plants with shoot fly eggs and total number of shoot fly eggs. The shoot fly resistant
genotypes ICSB 84, ICSA/B 467, ICSB 487, ICSB 14024, and IS 18551 had low shoot fly deadheart incidence,
higher amounts of condensed tannins, soluble sugars, phenols and lower protein content as compared to the
susceptible genotypes. Thirteen unique compounds were identified from leaf surface extracts by GC–MS which
were associated with shoot fly resistance/susceptibility. While HPLC analysis revealed that Protocatechuic and
coumaric acids were present in most of the sorghum genotypes, but their amounts were significantly greater in
resistant as compared to the susceptible ones. The findings of the study highlight the importance of various
morphological and biochemical traits conferring resistance to sorghum shoot fly, and these traits can be used as
markers to identify shoot fly resistant genotypes for use in breeding programs.
 
Publisher Elsevier
 
Date 2021-02
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11832/1/Field%20Crop%20Reserach%20Jaba%20Jagdish%20-compressed.pdf
Arora, N and Mishra, S P and Nitnavare, R B and Jaba, J and Kumar, A A and Bhattacharya, J and Sohu, R S and Sharma, H C (2021) Morpho-physiological traits and leaf surface chemicals as markers conferring resistance to sorghum shoot fly (Atherigona soccata Rondani). Field Crops Research (TSI), 261. pp. 1-12. ISSN 0378-4290