We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Grain carbon metabolism and stem reserve mobilization compensate high temperature stress in wheat.
- Authors
Bala, Shasi; Asthir, Bavita; Taggar, Monica S.; Goyal, Meenakshi; Bains, Navtej S.; Sharma, Achla; Chhuneja, Parveen
- Abstract
One hundred twenty-five recombinant inbred lines of wheat derived from the cross of C 273 (heat tolerant) and PBW 343 (susceptible) together with check PBW 550 were evaluated under normal and heat stress (late sown) conditions. A significant reduction in chlorophyll content and increases in membrane injury index and lipid peroxidation were observed under heat stress. Higher buildup of sugars in peduncle of tolerant over susceptible lines resulted in higher transport of sugars for sink activity. However, grains of control plants showed higher lipoxygenase activities and total antioxidant activity with decreasing contents of lipid peroxide and H2O2 resulting in building of redox homeostasis to tolerate oxidative stress. High temperature significantly decreased yield and yield-related traits both in tolerant and susceptible lines. Chlorophyll content, peduncle sugars and peduncle weight were highly correlated with yield and grain weight under stress indicating a reliable screening tool for development of heat-tolerant genotypes.
- Subjects
LIPID peroxidation (Biology); CARBON metabolism; OXIDATIVE stress; HIGH temperatures; GRAIN yields
- Publication
Agrochimica: International Journal of Plant Chemistry, Soil Science & Plant Nutrition of the University of Pisa, 2021, Vol 65, Issue 1, p39
- ISSN
0002-1857
- Publication type
Article
- DOI
10.12871/00021857202113