Abstract:
A pot experiment was conducted in the backyard of Department of Botany, The Islamia University of Bahawalpur, Pakistan during December 2021 to march 2022 to study the effect of priming on different growth attributes of Barely plant under salinity. Before sowing, seeds were primed with two solutions of KNO3 as 15 mM (T2) and 20 mM (T3) concentrations for 10 hours. After priming, 10 seeds were manually sownon 31st of December 2021, half inch deep in soil and later 5 plants were maintained in each pot. Four different levels of salinity were imposed as 0mM (t0), 50mM(t1), 100mM(t2) and 150mM(t3). The experiment was consisted of 36 pots and three replications each. Response of germination, growth and chlorophyll content was studied for rising level of salinity. The results of study indicated the fact that germination and growth attributes were affected negatively as a result of salinity and this damage was proportional to rising level of salinity. Chlorophyll contents of plant were more adversely affected by salinity. However, seed priming mitigated the adverse effects of salinity. Emergence traits and fresh weight of plant was significantly improved due to priming. The reason for this positive response as a result of priming is due to pre-germination metabolism caused by priming with KNO3. Seed priming improves activity of enzymes like a-amylase, ß-amylase, dehydrogenase and catalase that improve carbohydrate metabolism in germinated seeds. Although both concentrations of KNO3 used were found to mitigate salinity, but T2 level (15mM KNO3) was found more efficient.
Page(s):
150-150
DOI:
DOI not available
Published:
Journal: Abstract Book on Global Science Technology and Management Conference, Volume: 0, Issue: 0, Year: 2023
Keywords:
salinity
,
chlorophyll content
,
Priming
,
Barely
,
KNO3