Competition between plants affects phenology in rice cultivars
Whole cycle and successive phases durations of crop are key traits for adaptation to local conditions. They are known as highly genetically controlled and rice breeders used to refer lines and genotypes to short, medium or late materials. However, even expressed in thermal time, these crop and phases durations are also influenced by environment conditions. To test effect of competition levels between plants on rice phenology, a density experiment was carried out in fields in Camargue region, France, with two genotypes on two consecutive years. Results show that leaf appearance rate is affected by densities during the two observed phases of leaf appearance: the rapid one up to beginning of stem elongation and slower one after. They also show that, with increasing plant densities, rice cultivars reduce the number of leaves on the main stem, initiate panicle sooner, and delay flowering date. Analysis shows that relative growth rates during successive phases are highly correlated to observed variations.
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Subjects: | F30 - Génétique et amélioration des plantes, F62 - Physiologie végétale - Croissance et développement, F01 - Culture des plantes, Oryza sativa, variété, feuille, espacement, repiquage, densité de semis, phénologie, croissance, développement biologique, http://aims.fao.org/aos/agrovoc/c_5438, http://aims.fao.org/aos/agrovoc/c_8157, http://aims.fao.org/aos/agrovoc/c_4243, http://aims.fao.org/aos/agrovoc/c_7272, http://aims.fao.org/aos/agrovoc/c_7873, http://aims.fao.org/aos/agrovoc/c_6944, http://aims.fao.org/aos/agrovoc/c_5774, http://aims.fao.org/aos/agrovoc/c_3394, http://aims.fao.org/aos/agrovoc/c_921, |
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dig-cirad-fr-5253752024-01-28T13:27:09Z http://agritrop.cirad.fr/525375/ http://agritrop.cirad.fr/525375/ Competition between plants affects phenology in rice cultivars. De Raïssac Marcel, Audebert Alain, Roques Sandrine, Bolomier Jerôme. 2004. In : New directions for a diverse planet : Proceedings for the 4th International Crop Science Congress, Brisbane, Australia, 26 Sep - 1 Oct 2004. Turner Neil (ed.), Angus John (ed.), Mc Intyre Lynne (ed.), Robertson Michael (ed.), Borrell Andrew (ed.), Lloyd David (ed.). Gosford : Regional Institute ISBN 1-920842-20-9 International Crop Science Congress. 4, Brisbane, Australie, 26 Septembre 2004/1 Octobre 2004.http://www.cropscience.org.au/icsc2004/poster/2/7/1/1186_audebert.htm <http://www.cropscience.org.au/icsc2004/poster/2/7/1/1186_audebert.htm> Competition between plants affects phenology in rice cultivars De Raïssac, Marcel Audebert, Alain Roques, Sandrine Bolomier, Jerôme eng 2004 Regional Institute New directions for a diverse planet : Proceedings for the 4th International Crop Science Congress, Brisbane, Australia, 26 Sep - 1 Oct 2004 F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Oryza sativa variété feuille espacement repiquage densité de semis phénologie croissance développement biologique http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_7272 http://aims.fao.org/aos/agrovoc/c_7873 http://aims.fao.org/aos/agrovoc/c_6944 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_921 Whole cycle and successive phases durations of crop are key traits for adaptation to local conditions. They are known as highly genetically controlled and rice breeders used to refer lines and genotypes to short, medium or late materials. However, even expressed in thermal time, these crop and phases durations are also influenced by environment conditions. To test effect of competition levels between plants on rice phenology, a density experiment was carried out in fields in Camargue region, France, with two genotypes on two consecutive years. Results show that leaf appearance rate is affected by densities during the two observed phases of leaf appearance: the rapid one up to beginning of stem elongation and slower one after. They also show that, with increasing plant densities, rice cultivars reduce the number of leaves on the main stem, initiate panicle sooner, and delay flowering date. Analysis shows that relative growth rates during successive phases are highly correlated to observed variations. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/closedAccess http://www.cropscience.org.au/icsc2004/poster/2/7/1/1186_audebert.htm http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=185448 http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=185522 info:eu-repo/semantics/altIdentifier/purl/http://www.cropscience.org.au/icsc2004/poster/2/7/1/1186_audebert.htm |
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F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Oryza sativa variété feuille espacement repiquage densité de semis phénologie croissance développement biologique http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_7272 http://aims.fao.org/aos/agrovoc/c_7873 http://aims.fao.org/aos/agrovoc/c_6944 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_921 F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Oryza sativa variété feuille espacement repiquage densité de semis phénologie croissance développement biologique http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_7272 http://aims.fao.org/aos/agrovoc/c_7873 http://aims.fao.org/aos/agrovoc/c_6944 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_921 |
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F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Oryza sativa variété feuille espacement repiquage densité de semis phénologie croissance développement biologique http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_7272 http://aims.fao.org/aos/agrovoc/c_7873 http://aims.fao.org/aos/agrovoc/c_6944 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_921 F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Oryza sativa variété feuille espacement repiquage densité de semis phénologie croissance développement biologique http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_7272 http://aims.fao.org/aos/agrovoc/c_7873 http://aims.fao.org/aos/agrovoc/c_6944 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_921 De Raïssac, Marcel Audebert, Alain Roques, Sandrine Bolomier, Jerôme Competition between plants affects phenology in rice cultivars |
description |
Whole cycle and successive phases durations of crop are key traits for adaptation to local conditions. They are known as highly genetically controlled and rice breeders used to refer lines and genotypes to short, medium or late materials. However, even expressed in thermal time, these crop and phases durations are also influenced by environment conditions. To test effect of competition levels between plants on rice phenology, a density experiment was carried out in fields in Camargue region, France, with two genotypes on two consecutive years. Results show that leaf appearance rate is affected by densities during the two observed phases of leaf appearance: the rapid one up to beginning of stem elongation and slower one after. They also show that, with increasing plant densities, rice cultivars reduce the number of leaves on the main stem, initiate panicle sooner, and delay flowering date. Analysis shows that relative growth rates during successive phases are highly correlated to observed variations. |
format |
conference_item |
topic_facet |
F30 - Génétique et amélioration des plantes F62 - Physiologie végétale - Croissance et développement F01 - Culture des plantes Oryza sativa variété feuille espacement repiquage densité de semis phénologie croissance développement biologique http://aims.fao.org/aos/agrovoc/c_5438 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_7272 http://aims.fao.org/aos/agrovoc/c_7873 http://aims.fao.org/aos/agrovoc/c_6944 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_921 |
author |
De Raïssac, Marcel Audebert, Alain Roques, Sandrine Bolomier, Jerôme |
author_facet |
De Raïssac, Marcel Audebert, Alain Roques, Sandrine Bolomier, Jerôme |
author_sort |
De Raïssac, Marcel |
title |
Competition between plants affects phenology in rice cultivars |
title_short |
Competition between plants affects phenology in rice cultivars |
title_full |
Competition between plants affects phenology in rice cultivars |
title_fullStr |
Competition between plants affects phenology in rice cultivars |
title_full_unstemmed |
Competition between plants affects phenology in rice cultivars |
title_sort |
competition between plants affects phenology in rice cultivars |
publisher |
Regional Institute |
url |
http://agritrop.cirad.fr/525375/ |
work_keys_str_mv |
AT deraissacmarcel competitionbetweenplantsaffectsphenologyinricecultivars AT audebertalain competitionbetweenplantsaffectsphenologyinricecultivars AT roquessandrine competitionbetweenplantsaffectsphenologyinricecultivars AT bolomierjerome competitionbetweenplantsaffectsphenologyinricecultivars |
_version_ |
1792496139866472448 |