Strawberry (Fragaria ananassa Duch.) cv. Winter Dawn response to salicylic acid, sodium nitroprusside and putrescine
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Date
2019
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CCSHAU
Abstract
The present investigation was carried out to study the effect of salicylic acid, sodium
nitroprusside and putrescine on growth, yield, quality and storage of strawberry (Fragaria × ananassa
Duch.) cv. Winter Dawn in the Department of Horticulture, CCS Haryana Agricultural University,
Hisar during 2018-19. The salicylic acid (2mM, 4mM and 6mM), sodium nitroprusside (4μM, 6μM
and 8μM) and putrescine (1mM, 2mM and 3mM) were sprayed on plants 20 and 40 days after
transplanting. The fruit length, fresh weight and juice content increased in plants sprayed with salicylic
acid, sodium nitroprusside and putrescine as compared to control. The strawberry plants treated with
salicylic acid at 4mM significantly increased plant spread (30.25 cm), number of leaves (20.66).
Maximum TSS (7.5%), ascorbic acid (45.90 mg/100ml), anthocyanin content (46.50 mg/100ml) and
organoleptic rating (7.6), whereas, fruit colour ‗b‘ value (15.61) was significantly higher at PU at 1mM
as compared to other treatments. Maximum TSS (7.55%), anthocyanin content (49.83 mg/100ml), juice
content (62.6%) organoleptic rating (7.4) and minimum loss in weight (6.38%)were recorded in SA at 4
mM on fourth day of storage. Reduction in decay loss was observed on 4th day with the all treatments
except control.
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