Inheritance of peroxyacetyl nitrate resistance in petunia

Journal Article · Sat Mar 01 04:00:00 EST 1980 · J. Am. Soc. Hortic. Sci.; (United States)

OSTI ID:5604201

De Vos, N E; Hill, Jr, R R; Hepler, R W; Pell, E J; Craig, R

The inheritance of peroxyacetyl nitrate (PAN) resistance in Petunia hybrida Vilm. was studied using the inbred parents of White Cascade, a susceptible F/sub 1/ hybrid, and Coral Magic, a resistant hybrid. In each of 6 experiments, 4-week-old plants of the parents, their reciprocal F/sub 1/ hybrids, the F/sub 2/ generation, and reciprocal backcross generations were simultaneously tested for PAN resistance. Plants were exposed to 742 ..mu..g/m/sup 3/ (0.15 ppm) PAN for 1.5 hours in a controlled environment chamber. The percent area of bifacial necrosis was determined for each leaf on a plant and an average was calculated to yield an injury rating. Significant genetic variation was detected in each experiment, but the best fitting genetic model varied among experiments, indicating large genotype by environment interaction. In the experiment with the most severe PAN injury, genes for susceptibility exhibited almost complete dominance to those for resistance and epistatic effects were not significant. In other experiments with lower levels of PAN injury, resistance was partially dominant to susceptibility and one or more epistatic parameters were significant. 17 references, 4 tables.

• Research Organization: Pennsylvania State Univ., University Park
• OSTI ID: 5604201
• Journal Information: J. Am. Soc. Hortic. Sci.; (United States), Journal Name: J. Am. Soc. Hortic. Sci.; (United States) Vol. 105:2; ISSN JOSHB
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
ATMOSPHERES
BIOLOGICAL VARIABILITY
BIOLOGY
CONTROLLED ATMOSPHERES
DATA
DISEASE RESISTANCE
ESTERS
EXPERIMENTAL DATA
GENES
GENETIC VARIABILITY
GENETICS
GENOTYPE
HYBRIDIZATION
INFORMATION
INJURIES
LEAVES
NECROSIS
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORNAMENTAL PLANTS
OXYGEN COMPOUNDS
PATHOLOGICAL CHANGES
PEROXYACETYL NITRATE
PLANTS
POLLUTION
SENSITIVITY
TOXICITY