Open AccessHost suitability and differential performance parameters of cotton mealybug, Phenacoccus solenopsis for resistance in fibre crop, kenaf genotypes
Author(s) -
S. Satpathy,
AUTHOR_ID,
B. S. Gotyal,
Nazmul Alam,
V. Ramesh Babu,
AUTHOR_ID,
AUTHOR_ID,
AUTHOR_ID
Publication year - 2021
Publication title -
journal of environmental biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.247
H-Index - 48
eISSN - 2394-0379
pISSN - 0254-8704
DOI - 10.22438/jeb/42/3/mrn-1580
Subject(s) - mealybug , kenaf , biology , crop , pest analysis , hibiscus , horticulture , host (biology) , agronomy , antibiosis , botany , ecology , chemistry , genetics , organic chemistry , bacteria , fiber
Aim: To enumerate resistance in Kenaf (fibre crop) genotypes with distinct host suitability, biological performance and growth parameters of mealybug, Phenacoccus solenopsis Tinsley. Methodology: Laboratory and glasshouse experiments were conducted to assess the host suitability and resistance of genotypes on the basis of relative colonization, growth and survival in terms of establishment rate and nymphal duration of mealybug. Results: The wild accession, WHIJ 50 belonging to Hibiscus spp. and the variety JRM 3 of H. cannabinus recorded significantly lowest female establishment rate, instantaneous population increase, nymphal survival and growth index with longer nymphal duration possessing possible antixenosis- and antibiosis- mediated resistance. On the other extreme the susceptible genotype, WHIN 47 (H. acetocella) proved favourable for crawler developmental parameters.Interpretation: The level, mechanism and basis of resistance in kenaf enumerated from this study may pave the way for creating vigorous kenaf hybrids resistant to cotton mealybug.