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625420 
Journal Article 
Effect of ozone stress on different growth stages of potato (Solanum tuberosum) 
Mina, U; Kumar, P; Varshney, CK 
2010 
Phyton-Annales Rei Botanicae
ISSN: 0079-2047 
49 
253-266 
In the present study responses of different growth stages
of potato to ozone exposure were investigated Potato plants of vegetative (30 day old plants
(DOPs)), reproductive (45 DOPs) and post reproductive (60 DOPs) growth stage were exposed to
75ppb and 150ppb ozone concentration for 12 days, 2 hr per day in Controlled Environment Dynamic
Chambers Ozone exposure induced appearance of leaf injury symptoms as well as reduced growth and
yield of potato plants of all the three growth stages Between plants of three growth stages ozone
injury on leaves (from 75 ppb and 150 ppb ozone exposer) was maximum in 45 DOPs, followed by 60
DOPs and 30 DOPs. Among plants of all the three growth stages maximum reduction in growth and
yield parameters was observed in plants exposed at reproductive (45 DOPs) growth stage Reduction
in growth parameters 
Ozone; potato; growth stages; yield