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Componential analysis of plant morphological factors associated with sorghum resistance to shoot fly Atherigona soccata Rondani

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Title Componential analysis of plant morphological factors associated with sorghum resistance to shoot fly Atherigona soccata Rondani
 
Creator Darbha, Subrahmanyam
 
Subject Sorghum
 
Description Investigation on the "Componential analysis of plant morphological factors
associated with sorghum resistance to shoot fly Arlterigona soccara Rondani," was carried
out at the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)
Patancheru, Andhra Pradesh, India during kharif '96. The effect of morphological factors
on shoot fly resistance was studied by considering thiny genotypes having a varied
breeding background.
The morphological factors viz., mesocotyl length, seedling vigor, glossy score, 4"
leaf parameters (length, width and drooping depth), trichomes on 5" leaf (abaxial and
adaxial surfaces) and leaf surface wetness (LSW) were studied in relation to shoot fly
parameters (egg count and deadheart per cent). Seedling vigor, glossy score and shoot fly
parameters were studied under field conditions in two sowings during kharif '96.
Mesocotyl length, leaf parameters, trichomes on the leaf surface and leaf surface wetness
were studied under laboratory conditions. The data obtained was analyzed for mean
performance of individual genotypes, and groups of genotypes for various factors and the
study of correlations and inter-relationships of various morphological factors on shoot fly
resistance parameters using path coefficient analysis.
The mean performance of all the genotypes across the morphological traits studied
for shoot fly resistance indicated that shoot fly resistant sources (IS 1054, IS 1057. and
IS 18551) and Bred resistant B lines (SPSFR 94001 B. SPSFR 94003 B. SPSFR 94031
B, SPSFPR 94002 B and SPSFF'R 94005 B had desirable morphological features which
resulted in lower deadheart per cent. Genotypes IS 18551, ICSV 705, SPSFR 94031, and
SPSFPR 94005 B performed consistently in both the sowings and were found to be most
resistant to shoot fly, of all the genotypes studied.
 
Date 1997
 
Type Thesis
NonPeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/669/1/62045.pdf
Darbha, Subrahmanyam (1997) Componential analysis of plant morphological factors associated with sorghum resistance to shoot fly Atherigona soccata Rondani. Masters thesis, Acharya N G Ranga Agricultural University.