Abstract:
Salinity is the dominant abiotic stress that drastically effect cereal crop yield worldwide as well as in Pakistan. To overcome this problem, nanotechnology is being used as most prominent and cost effective. In the present study exogenous application of zinc oxide nano particles (ZNP) were used to investigate its effects on salinity stressed maize (Zea mays L.) plants in pots. The plants were subjected to three different levels of salt stress (0, 100 and 200mM NaCl) 20 days after sowing (DAS) and four levels of exogenous ZNP (0, 50, 75 and 100 mgL-1) were applied 2 times after three to five days of salinity stress. It was observed that exogenous ZNP application greatly help the plants to combat the salt stress and thus morphological, physiological and yield parameters were enhanced in both controlled and salinity stressed plants. In the experiment we observed much growth increase occur in plants which were sprayed with 75 mg L-1 ZNP as compared to 100 mg L-1. Shoot length was increased by 10% in controlled and 12% in 100 mM NaCl stressed and 9% in 200 mM NaCl salt stressed plants, shoot weight was increased by 26%, 20% and 14%, leaf area was increased by 22%, 23% and 17%, total chlorophyll content increased by 7%, 8% and 6% and grain yield by 7%, 14% and 11% respectively. By considering all these findings we conclude that 75 mg L-1 ZNP application proved helpful to elevate the salinity stress and can be apply to plants to get batter yield under stress conditions.
Page(s):
82-82
DOI:
DOI not available
Published:
Journal: Abstract Book on Second International Conference on Recent Approaches in Plant Sciences (RAPS-23) 4-5 May 2023 , Volume: 0, Issue: 0, Year: 2023
Keywords:
maize
,
salinity
,
Growth
,
ZnO nanoparticles