Role of Copper in Improving the Seed Quality of Sunflower (helianthus Annuus)
Year: 1999
Type: article
Abstract: 'Morden' sunflower (Helianthus annuus L.) was grown in refined sand at a copper supply ranging from acute deficiency (0.00065 mg/litre) to excess (6.5 mg/litre) to study the effect of variable copper on growth, biomass,oil yield,etc. The oil content in seeds was highest at 0.065 mg Cu/litre and compared to this, it decreased more in deficiency (<0,065 mg/litre) than in excess of copper (6.5 mg/litre). High copper also reduced the biomass, total seed weight and the activities of polyphenol oxidase, ascorbic acid oxidase and cytochrome C oxidase in leaves. In sunflower, low copper (<0.065 mg Cu/litre) induced the characteristic visible deficiency symptoms and drastically reduced the growth. biomass and seea yield accompanied 'by 'lOW sugar concentratiOn and 'lowered activities Of polyphenol oxidase. ascorbic acid oxidase and cytochrome C oxidase in leaves
Authors: Nirmala Nautiyal, Chetan Sharma, C. Chatterjee
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: diamond
OpenAlex ID: W83894455