Protein and carbohydrate changes in cotton leaves linked with age and development
1987
Souza, J.G. de (Centro Nacional de Pesquisa do Algodao, Campina Grande (Brazil)) | Silva, J.V. da
Studies showed that the most important assimilatory organ in the development of the cotton boll is the main stem leaf subtending the sympodium. Nitrate reductase activity decreased and starch content increased 20 days after flowering in the first leaf of the first sympodium. In the third sympodium, the youngest leaf had the highest starch content, lowest nitrate reductase activity and highest protein content. As mean starch content decreased with age and was inversely related to photosyntate demand, the importance of the oldest leaf, the main stem leaf was confirmed and had the lowest starch content and highest nitrate reductase activity
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