Indian Society of Genetics & Plant Breeding

Popping quality attributes of popcorn hybrids in relation to weevil (Sitophilus oryzae) infestation

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A set of 21 popcorn hybrids were evaluated at multilocations
to study the effects of weevil (Sitophilus oryzae)
infestation on popping quality traits. Wide genetic variation
for percent popping expansion (PPE) and grain popping
percentage (GPP) after weevil infestation were observed.
PPE and GPP varied from 6.09-85.21% and 4.33-66.67%,
across locations, respectively. The mean PPE was 52.90%,
while same for GPP was 23.46%. Significant effects of
environment and genotype × environment interactions were
observed for both PPE and GPP. Strong positive correlation
(r=0.89) across locations was recorded between PPE and
GPP. Despite weevil infestation, popcorn hybrids viz., PH114
(PPE: 83.18%, GPP: 54.11%), PH110 (PPE: 69.27%, GPP:
33.11%), PH103 (PPE: 65.84%, GPP: 26.78%), PH112 (PPE:
64.91%, GPP: 29.22%) and PH109 (PPE: 64.48%, GPP: 29.00%)
were identified as promising with desirable popping quality
traits. Many of the popcorn hybrids possessed undesirable
popping characteristics (12 hybrids with <60% PPE; 18
hybrids with <30% GPP) upon infestation. Despite having a
common notion that popcorn genotypes are relatively
resistant than other types of maize grain, many of the
popcorn hybrids were highly susceptible to weevils leading
to undesirable popping quality attributes. The study
emphasizes the need for breeding weevil resistant popcorn
genotypes possessing desirable popping quality attributes.

Keywords: Popcorn, popping, Sitophilus oryzae, variability, maize


Year: 2015
Volume: 75
Issue: 4
Article DOI: 10.5958/0975-6906.2015.00081.4
Print ISSN: 0019-5200
Online ISSN: 0975-6906


Pradyumn Kumar, Javaji C. Sekhar info_circle
Satish K. Guleria info_circle
Narendra K. Singh info_circle

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