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Photosynthetic activity in the mature leaves of Sorghum bicolor as influenced by growth retardants

Photosynthetic activity was measured in leaves of Sorghum bicolor 'Texas 414 treated with the growth retardants CCC, Alar, and Phosphon-D. The growth retardants increased leaf fresh weight and chlorophyll content by about 10 percent. The Hill reaction and non-cyclic photophosphorylation activities s...

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Autores principales: Sudhakara Rao, G., Malakondaiah, N., Rao, J.V.S.
Formato: Artículo
Lenguaje:Inglés
Publicado: Instituto Interamericano de Cooperación para la Agricultura (IICA) 2025
Materias:
Sorghum bicolor||Sorghum bicolor||Sorghum bicolor||Sorghum bicolor
Hoja||leaves||folha||feuille
Sustancia de crecimiento vegetal||plant growth substances||regulador de crescimento (plantas)||substance de croissance végétale
Fotosíntesis||photosynthesis||fotossíntese||photosynthèse
Peso||weight||peso||poids
Clorofila a||chlorophyll a||undefined||chlorophylle a
India||India||Índia||Inde
Sede Central
Acceso en línea:https://repositorio.catie.ac.cr/handle/11554/12874
Sumario:Photosynthetic activity was measured in leaves of Sorghum bicolor 'Texas 414 treated with the growth retardants CCC, Alar, and Phosphon-D. The growth retardants increased leaf fresh weight and chlorophyll content by about 10 percent. The Hill reaction and non-cyclic photophosphorylation activities showed a significant increase of about 50 percent, while the cyclic type was stimulated by only 10 percent. Labeled carbon incorporation was stimulated by 25 percent with CCC. It is suggested that growth retardants may influence photosynthesis by promoting Photosystem II activity.

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