IMPACT OF TEMPERATURE STRESS ON THE FUNCTIONAL EFFICIENCY OF Brassica napus SEEDLINGS | Asian .....

The purpose of this study was to see how temperature stress affected the morpho-physiological characteristics and photosynthetic pigments of Brassica napus L. seedlings exposed to oxidative stress generated by high (40°C) and low (4°C) temperatures. Experiments were conducted at the Senior Laboratory, P.G. Department of Botany, Khalsa College, Amritsar, for this purpose. The effect of different temperatures (4°C and 40°C) on B. napus L. seedlings primed with double distilled water was explored. The effects of different temperatures in this study on shoot, root length, and light quenching pigments like chlorophyll a, chlorophyll b, total chlorophyll, and total carotenoids concentration were all different. When compared to control, low temperature (4°C) treatment degrades all aspects of development and physiology by reducing photosynthetic pigments and changing the carbon makeup negatively. When compared to control and low temperature treated seedlings, high temperature treatment reduced all growth, physiological, and biochemical characteristics. In conclusion, both low and high temperatures (4°C and 40°C) reduce morphophysiological component improvement, nutrition reallocation, and photosynthetic machinery regulation.

Please see the link :- https://www.ikprress.org/index.php/AJOPSS/article/view/6045