Abstract:
Wheat (Triticum aestivum L.) being a staple food is severely affected by heat stress as it effects plant growth, development and ultimately reduce yield. Silver nanoparticles synthesized from silver nitrate (AgNO3) reduced with Mentha longifolia extract. Silver nanoparticles were applied exogenously to wheat plants against heat stress. Silver nanoparticles improved germination percentage (18% & 21%), germination index (0.48% & 0.43%) and seedling vigor index (55.7% & 47.9%). Noteworthyresults of silver nanoparticleswererecorded on morphology of wheat in high temperature condition with maximum increase of shoot length 12.5% & 14.5%, root length 1.38% & 1.63%, fresh weight of plant 0.43% & 0.475%, dry weight of plant 0.3% & 0.1%, leaf length 6% & 5.5%, leaf area 33.8% & 23% and leaf number 2.5% & 2%. In physiological parameters maximum increase of 17% & 19% in relative water content while 10.5% & 7.5% in membrane stability index, chlorophyll a content 5.44% & 4.69%, chlorophyll b content 8.28% & 6.91%, total chlorophyll contents 12.71% & 13.3% and carotenoid contents 0.27% & 0.26% was observed. Under heat stress condition, silver nanoparticles also enhance the production of biochemical such as increase in proline contents (0.64% & 0.36%), total flavonoid contents (0.81% & 0.66%), phenolic contents (0.3% and 0.25%), SOD (0.25% & 0.26%) and POD (0.17% & 0.15%). This technique is helpful for enhancement of crop germination, development and growth of crop like wheat growing in stressful environment such as in high temperature regions.
Page(s):
221-221
DOI:
DOI not available
Published:
Journal: Abstract Book on International Conference on Food and Applied Sciences (ICFAS-23) 3-5 August 23, Volume: 0, Issue: 0, Year: 2023
Keywords:
Climate change
,
heat stress
,
Silver nanoparticles
,
nanotechnology
,
wheat