Response of cotton leaf photosynthesis to differential growth light environment
Light is one of the most important resources for plant. Light level in canopy varies greatly. Previous research using individual leaf shading showed no photosynthetic response to reduce light environment to main stem leaves. Our objective was to determine photosynthetic response of main stem, sympodial, and monopodial leaves to differential growth light environment. We monitored light environment on leaf surface and measured photosynthesis rates at different leaf ages. As leaf aged, light environment of main stem leaves slightly decreased while for sympodial and monopodial leaves it rapidly decreased. Pmax for main stem and sympodial leaves rapidly decreased with increasing leaf age. That significant decline in Pmax (70%) of main stem leaves was associated with non-significant reduction in leaf light environment indicated physiological response caused by leaf aging. Finally, the positive correlation between Pmax and differential light environment suggest photosynthetic adaptation of cotton leaves to growth light environment, in addition to physiological changes with leaf aging.
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Subjects: | F61 - Physiologie végétale - Nutrition, Gossypium, feuille, photosynthèse, lumière, tige, http://aims.fao.org/aos/agrovoc/c_3335, http://aims.fao.org/aos/agrovoc/c_4243, http://aims.fao.org/aos/agrovoc/c_5812, http://aims.fao.org/aos/agrovoc/c_4322, http://aims.fao.org/aos/agrovoc/c_7390, |
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dig-cirad-fr-65752024-01-27T07:45:38Z http://agritrop.cirad.fr/6575/ http://agritrop.cirad.fr/6575/ Response of cotton leaf photosynthesis to differential growth light environment. Kasemsap Poonpipope, Crozat Yves, Thanisawanyangkura Sornprach. 1997. Kasetsart Journal. Natural Sciences, 31 (5) : 143-148. Response of cotton leaf photosynthesis to differential growth light environment Kasemsap, Poonpipope Crozat, Yves Thanisawanyangkura, Sornprach eng 1997 Kasetsart Journal. Natural Sciences F61 - Physiologie végétale - Nutrition Gossypium feuille photosynthèse lumière tige http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_5812 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7390 Light is one of the most important resources for plant. Light level in canopy varies greatly. Previous research using individual leaf shading showed no photosynthetic response to reduce light environment to main stem leaves. Our objective was to determine photosynthetic response of main stem, sympodial, and monopodial leaves to differential growth light environment. We monitored light environment on leaf surface and measured photosynthesis rates at different leaf ages. As leaf aged, light environment of main stem leaves slightly decreased while for sympodial and monopodial leaves it rapidly decreased. Pmax for main stem and sympodial leaves rapidly decreased with increasing leaf age. That significant decline in Pmax (70%) of main stem leaves was associated with non-significant reduction in leaf light environment indicated physiological response caused by leaf aging. Finally, the positive correlation between Pmax and differential light environment suggest photosynthetic adaptation of cotton leaves to growth light environment, in addition to physiological changes with leaf aging. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/closedAccess http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=147 |
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F61 - Physiologie végétale - Nutrition Gossypium feuille photosynthèse lumière tige http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_5812 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7390 F61 - Physiologie végétale - Nutrition Gossypium feuille photosynthèse lumière tige http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_5812 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7390 |
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F61 - Physiologie végétale - Nutrition Gossypium feuille photosynthèse lumière tige http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_5812 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7390 F61 - Physiologie végétale - Nutrition Gossypium feuille photosynthèse lumière tige http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_5812 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7390 Kasemsap, Poonpipope Crozat, Yves Thanisawanyangkura, Sornprach Response of cotton leaf photosynthesis to differential growth light environment |
description |
Light is one of the most important resources for plant. Light level in canopy varies greatly. Previous research using individual leaf shading showed no photosynthetic response to reduce light environment to main stem leaves. Our objective was to determine photosynthetic response of main stem, sympodial, and monopodial leaves to differential growth light environment. We monitored light environment on leaf surface and measured photosynthesis rates at different leaf ages. As leaf aged, light environment of main stem leaves slightly decreased while for sympodial and monopodial leaves it rapidly decreased. Pmax for main stem and sympodial leaves rapidly decreased with increasing leaf age. That significant decline in Pmax (70%) of main stem leaves was associated with non-significant reduction in leaf light environment indicated physiological response caused by leaf aging. Finally, the positive correlation between Pmax and differential light environment suggest photosynthetic adaptation of cotton leaves to growth light environment, in addition to physiological changes with leaf aging. |
format |
article |
topic_facet |
F61 - Physiologie végétale - Nutrition Gossypium feuille photosynthèse lumière tige http://aims.fao.org/aos/agrovoc/c_3335 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_5812 http://aims.fao.org/aos/agrovoc/c_4322 http://aims.fao.org/aos/agrovoc/c_7390 |
author |
Kasemsap, Poonpipope Crozat, Yves Thanisawanyangkura, Sornprach |
author_facet |
Kasemsap, Poonpipope Crozat, Yves Thanisawanyangkura, Sornprach |
author_sort |
Kasemsap, Poonpipope |
title |
Response of cotton leaf photosynthesis to differential growth light environment |
title_short |
Response of cotton leaf photosynthesis to differential growth light environment |
title_full |
Response of cotton leaf photosynthesis to differential growth light environment |
title_fullStr |
Response of cotton leaf photosynthesis to differential growth light environment |
title_full_unstemmed |
Response of cotton leaf photosynthesis to differential growth light environment |
title_sort |
response of cotton leaf photosynthesis to differential growth light environment |
url |
http://agritrop.cirad.fr/6575/ |
work_keys_str_mv |
AT kasemsappoonpipope responseofcottonleafphotosynthesistodifferentialgrowthlightenvironment AT crozatyves responseofcottonleafphotosynthesistodifferentialgrowthlightenvironment AT thanisawanyangkurasornprach responseofcottonleafphotosynthesistodifferentialgrowthlightenvironment |
_version_ |
1792485403474788352 |