Photosynthetic Acclimation and Productivity of Mungbean Cultivars under Elevated CO2 Concentration

Autor:	V. Pandurangam, P. Sharma‐Natu, M. C. Ghildiyal
Rok vydání:	2004
Předmět:	biology Starch Radiata food and beverages Plant Science biology.organism_classification Photosynthesis Vigna chemistry.chemical_compound Horticulture chemistry Agronomy Photosynthetic acclimation Carbon dioxide Botany Dry matter Cultivar Agronomy and Crop Science
Zdroj:	Journal of Agronomy and Crop Science. 190:81-85
ISSN:	1439-037X 0931-2250
DOI:	10.1046/j.1439-037x.2003.00077.x
Popis:	Mungbean [Vigna radiata (L.) Wilczek] cultivars (Pusa Baisakhi, PS 16 and P 105) were grown in field at atmospheric (360 ± 10 ppm, AC) and elevated CO 2 (650 ± 50 ppm, EC) concentrations inside open top chambers for entire period of growth and development till maturity. Leaf net photosynthesis rate (P N ) of AC and EC grown plants when compared at same CO 2 concentration showed no significant down-regulation of P N in EC plants. In cv. P 105, even up-regulation of P N was observed in EC plants. Mungbean cultivars accumulated assimilates in the leaves during the day mostly in the form of starch. Nodule number and weight were also higher in EC plants. The positive effect of elevated CO 2 on P N , dry-matter production and seed yield was better expressed in cv. P 105 having greater podding ability.
Databáze:	OpenAIRE
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