Physiological and Biochemical Responses of French Bean to Excess Cobalt

Autor:	Chitralekha Chatterjee, B. K. Dube, Rajeev Gopal
Rok vydání:	2006
Předmět:	Chlorosis biology Physiology Chemistry Acid phosphatase food and beverages chemistry.chemical_element Hill reaction biology.organism_classification chemistry.chemical_compound Horticulture Catalase Chlorophyll Botany biology.protein Phaseolus Agronomy and Crop Science Plant nutrition Cobalt
Zdroj:	Journal of Plant Nutrition. 29:127-136
ISSN:	1532-4087 0190-4167
DOI:	10.1080/01904160500416513
Popis:	French bean (Phaseolus vulgaris L.) cv. ‘Anupama’ was grown in refined sand at variable levels of cobalt (Co), i.e., 0.0001 (control), 0.05, 0.10, 0.20, 0.40, and 0.50 mM, supplied as cobalt sulfate. The symptoms of excess Co (0.50 mM) appeared at day 35. In addition to growth depression, the young leaves developed chlorosis from the apex leading toward the base; the chlorosis intensified, changed to necrosis, and the infected leaves dried and withered. Under excess Co (> 0.0001 mM), the flowers produced were fewer in number, smaller, and many failed to mature, leading to lower seed yield. Excess Co (> 0.0001 mM) decreased the biomass, seed yield (number and weight), concentration of chlorophyll, Hill reaction activity, and activity of catalase, and deteriorated the quality of produce (sugars, starch, and protein nitrogen (N)), but it increased the concentration of phenols and activity of certain enzymes, i.e., peroxidase, ribonuclease, and acid phosphatase. The concentration of Co in various par...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dea30ea0f6c37f10eb49c3eb361aa4b6 https://doi.org/10.1080/01904160500416513 Zobrazit plný text záznamu