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Isolation, characterization and antagonistic efficacy of fungal endosymbionts from allied genera of cardamom.

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Title Isolation, characterization and antagonistic efficacy of fungal endosymbionts from allied genera of cardamom.
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Creator MP Faisal, CN Biju, R Praveena, R Gowri, SJ Ankegowda
 
Subject apparent infection rate, area under disease progress curve, Colletotrichum, epidemiology, leaf blight, small cardamom
 
Description Not Available
Small cardamom, the versatile spice of Zingiberaceae is cultivated in diverse agro-climatic regions
of India especially in South India. Leaf blight incited by Colletotrichum gloeosporioides sensu lato is
one among the major challenges encountered across different cardamom growing tracts. In the
present investigation, epidemiology of cardamom leaf blight was studied and an attempt was
made to decipher the resistant nature of Malabar, Mysore and Vazhukka genotypes based on
epidemiological parameters. The average percent disease index recorded in Malabar, Mysore and
Vazhukka varied from 23.41 to 27.72, 18.79 to 20.34 and 18.74 to 20.38, respectively. The disease
exhibited a positive correlation with respect to Tmax and Tmin in all the genotypes, however,
significant correlation was observed only in Malabar and Mysore with respect to Tmax. Whereas,
rainfall and rainy days had negative correlation with leaf blight in all genotypes however found
to be non-significant. The average infection rate was maximum (0.000429) in Malabar, whereas it
was 0.000124 and 0.000186 in Mysore and Vazhukka, respectively. The area under disease progress
curve registered the highest for Malabar (8814.15) and lowest in Vazhukka (6531.02) while, Mysore
type recorded 6612.96 indicating that, Vazhukka and Mysore types might posses horizontal
resistance and Malabar with vertical resistance. In the light of above results, plant protection
measures could be scheduled based on the take-off level and genotypes with horizontal resistance
could be promising candidates in resistance breeding programmes.
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Date 2021-08-02T08:08:50Z
2021-08-02T08:08:50Z
2018-01-01
 
Type Article
 
Identifier Not Available
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http://krishi.icar.gov.in/jspui/handle/123456789/52061
 
Language English
 
Relation Not Available;
 
Publisher Not Available