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Identification of Phytophthora and nematode-resistant source-from opens pollinated progenies of black pepper (Piper nigrum) using a modified protocol

DSpice at Indian Institute of Spices Research

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Creator SUSEELA BHAI, R
EAPEN, S J
ANANDARAJ, M
SAJI, K V
 
Date 2012-01-30T18:32:21Z
2012-01-30T18:32:21Z
2010
 
Identifier Indian Journal of Agricultural Sciences 80 (10): 893-7 (2010)
http://hdl.handle.net/123456789/802
 
Description Foot rot disease caused by Phytophthora capsici and slow decline disease caused by plant parasitic nematodes are serious diseases of black pepper (Piper nigrum L.). In this study open-pollinated seedling progenies of black pepper were screened during 2004--06 to identify sources of resistance against P. capsici and nematodes. A total of 11 632 seedlings raised from 30 cultivars, 42 hybrids and I-open pollinated selection were subjected for preliminary screening. Forty progenies (21 Karimunda progenies, 10 progenies from other cultivars, 8 progenies from hybrids and 1 progeny from the selection 'IISR Shakti') that took no infection in the preliminary screening against P. capsici were multiplied vegetatively and subjected to second round of screening adopting root inoculations. They were assessed for disease severity after 100 days of inoculation adopting a new protocol for the second and the final round of screening. The progenies were rated initially based on the time taken for mortality and then assayed for aerial infection and fmal score was based on average disease severity index which was not followed in the earlier screenings. Of the 11 632 progenies screened, 1 progeny, viz '04-P24-l' showed resistant reaction and 1 hybrid progeny, viz 04-HP-4oo-l showed moderate resistant reaction towards P. capsici.
 
Format 474022 bytes
application/pdf
 
Language en
 
Subject Black pepper
Meloidogyne incognita
Phytophthora capsici
Radopholus similis
Resistance
Screening
 
Title Identification of Phytophthora and nematode-resistant source-from opens pollinated progenies of black pepper (Piper nigrum) using a modified protocol
 
Type Article