Variability of phyllochron, plastochron and rate of increase in height in photoperiod-sensitive Sorghum varieties
Background and Aims: West African sorghum (Sorghum bicolor) varieties are generally highly photoperiod-sensitive, which is a necessary adaptation to the variable onset date of the rainy season and the variable dates of sowing in the savannah zone. Depending on sowing date, plants can produce from 12 to >40 leaves on the main culm, with height varying from 1 m to more than 5 m. The present study aimed to better understand the complex phenology of these variables.Methods: A 2-year series of monthly sowings of three West African sorghum varieties was conducted near Bamako, Mali. Drought stress was avoided by supplemental irrigation. Rate of initiation of primordia at the stem apex was recorded, together with rate of leaf emergence and increase in plant height.Key Results: Leaf initiation and appearance rates (plastochron-1 and phyllochron-1) were constant for a given sowing date in cases where less than 20 leaves were produced (generally observed with late sowing dates). In contrast, rates were bilinear for early sowing dates, for which plants produced more than 20 leaves. The secondary rates, which occurred from the 20th leaf onwards, were only half of the initial rate. Plastochron and phyllochron showed large variations among sowing dates, and were correlated with the rate of plant height increase. The initial plastochron and phyllochron were positively correlated with soil temperature and negatively correlated with both day length and day-to-day change of day length prevailing at plant emergence, but these factors explained only half of the variation observed.Conclusions: Although they belong to different genetic groups and have different height and photoperiod sensitivity, the three varieties studied exhibited similar response patterns of development rates among phenological phases and seasons, with the local landrace showing the greatest variation due to its longer vegetative phase and longer stem internodes. The possible adaptive advantages in African savannah environments of bilinear development rates and the associated limitation in height increase are discussed.
Main Authors: | , , , , |
---|---|
Format: | article biblioteca |
Language: | eng |
Subjects: | F62 - Physiologie végétale - Croissance et développement, F30 - Génétique et amélioration des plantes, Sorghum bicolor, phénologie, photopériodicité, croissance, feuille, date de semis, saison, mesure (activité), stade de développement végétal, variété, http://aims.fao.org/aos/agrovoc/c_7247, http://aims.fao.org/aos/agrovoc/c_5774, http://aims.fao.org/aos/agrovoc/c_5809, http://aims.fao.org/aos/agrovoc/c_3394, http://aims.fao.org/aos/agrovoc/c_4243, http://aims.fao.org/aos/agrovoc/c_16208, http://aims.fao.org/aos/agrovoc/c_6911, http://aims.fao.org/aos/agrovoc/c_4668, http://aims.fao.org/aos/agrovoc/c_5959, http://aims.fao.org/aos/agrovoc/c_8157, http://aims.fao.org/aos/agrovoc/c_4540, http://aims.fao.org/aos/agrovoc/c_8355, |
Online Access: | http://agritrop.cirad.fr/543475/ http://agritrop.cirad.fr/543475/1/document_543475.pdf |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-cirad-fr-543475 |
---|---|
record_format |
koha |
spelling |
dig-cirad-fr-5434752024-01-28T15:41:53Z http://agritrop.cirad.fr/543475/ http://agritrop.cirad.fr/543475/ Variability of phyllochron, plastochron and rate of increase in height in photoperiod-sensitive Sorghum varieties. Clerget Benoît, Dingkuhn Michaël, Gozé Eric, Rattunde H. Frederick W., Ney Bertrand. 2008. Annals of Botany, 101 (4) : 579-594.https://doi.org/10.1093/aob/mcm327 <https://doi.org/10.1093/aob/mcm327> Variability of phyllochron, plastochron and rate of increase in height in photoperiod-sensitive Sorghum varieties Clerget, Benoît Dingkuhn, Michaël Gozé, Eric Rattunde, H. Frederick W. Ney, Bertrand eng 2008 Annals of Botany F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes Sorghum bicolor phénologie photopériodicité croissance feuille date de semis saison mesure (activité) stade de développement végétal variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_6911 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_8157 Mali Afrique occidentale http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 Background and Aims: West African sorghum (Sorghum bicolor) varieties are generally highly photoperiod-sensitive, which is a necessary adaptation to the variable onset date of the rainy season and the variable dates of sowing in the savannah zone. Depending on sowing date, plants can produce from 12 to >40 leaves on the main culm, with height varying from 1 m to more than 5 m. The present study aimed to better understand the complex phenology of these variables.Methods: A 2-year series of monthly sowings of three West African sorghum varieties was conducted near Bamako, Mali. Drought stress was avoided by supplemental irrigation. Rate of initiation of primordia at the stem apex was recorded, together with rate of leaf emergence and increase in plant height.Key Results: Leaf initiation and appearance rates (plastochron-1 and phyllochron-1) were constant for a given sowing date in cases where less than 20 leaves were produced (generally observed with late sowing dates). In contrast, rates were bilinear for early sowing dates, for which plants produced more than 20 leaves. The secondary rates, which occurred from the 20th leaf onwards, were only half of the initial rate. Plastochron and phyllochron showed large variations among sowing dates, and were correlated with the rate of plant height increase. The initial plastochron and phyllochron were positively correlated with soil temperature and negatively correlated with both day length and day-to-day change of day length prevailing at plant emergence, but these factors explained only half of the variation observed.Conclusions: Although they belong to different genetic groups and have different height and photoperiod sensitivity, the three varieties studied exhibited similar response patterns of development rates among phenological phases and seasons, with the local landrace showing the greatest variation due to its longer vegetative phase and longer stem internodes. The possible adaptive advantages in African savannah environments of bilinear development rates and the associated limitation in height increase are discussed. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/543475/1/document_543475.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1093/aob/mcm327 10.1093/aob/mcm327 info:eu-repo/semantics/altIdentifier/doi/10.1093/aob/mcm327 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1093/aob/mcm327 info:eu-repo/semantics/reference/purl/http://aob.oxfordjournals.org/cgi/content/abstract/101/4/579 |
institution |
CIRAD FR |
collection |
DSpace |
country |
Francia |
countrycode |
FR |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-cirad-fr |
tag |
biblioteca |
region |
Europa del Oeste |
libraryname |
Biblioteca del CIRAD Francia |
language |
eng |
topic |
F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes Sorghum bicolor phénologie photopériodicité croissance feuille date de semis saison mesure (activité) stade de développement végétal variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_6911 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes Sorghum bicolor phénologie photopériodicité croissance feuille date de semis saison mesure (activité) stade de développement végétal variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_6911 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 |
spellingShingle |
F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes Sorghum bicolor phénologie photopériodicité croissance feuille date de semis saison mesure (activité) stade de développement végétal variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_6911 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes Sorghum bicolor phénologie photopériodicité croissance feuille date de semis saison mesure (activité) stade de développement végétal variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_6911 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 Clerget, Benoît Dingkuhn, Michaël Gozé, Eric Rattunde, H. Frederick W. Ney, Bertrand Variability of phyllochron, plastochron and rate of increase in height in photoperiod-sensitive Sorghum varieties |
description |
Background and Aims: West African sorghum (Sorghum bicolor) varieties are generally highly photoperiod-sensitive, which is a necessary adaptation to the variable onset date of the rainy season and the variable dates of sowing in the savannah zone. Depending on sowing date, plants can produce from 12 to >40 leaves on the main culm, with height varying from 1 m to more than 5 m. The present study aimed to better understand the complex phenology of these variables.Methods: A 2-year series of monthly sowings of three West African sorghum varieties was conducted near Bamako, Mali. Drought stress was avoided by supplemental irrigation. Rate of initiation of primordia at the stem apex was recorded, together with rate of leaf emergence and increase in plant height.Key Results: Leaf initiation and appearance rates (plastochron-1 and phyllochron-1) were constant for a given sowing date in cases where less than 20 leaves were produced (generally observed with late sowing dates). In contrast, rates were bilinear for early sowing dates, for which plants produced more than 20 leaves. The secondary rates, which occurred from the 20th leaf onwards, were only half of the initial rate. Plastochron and phyllochron showed large variations among sowing dates, and were correlated with the rate of plant height increase. The initial plastochron and phyllochron were positively correlated with soil temperature and negatively correlated with both day length and day-to-day change of day length prevailing at plant emergence, but these factors explained only half of the variation observed.Conclusions: Although they belong to different genetic groups and have different height and photoperiod sensitivity, the three varieties studied exhibited similar response patterns of development rates among phenological phases and seasons, with the local landrace showing the greatest variation due to its longer vegetative phase and longer stem internodes. The possible adaptive advantages in African savannah environments of bilinear development rates and the associated limitation in height increase are discussed. |
format |
article |
topic_facet |
F62 - Physiologie végétale - Croissance et développement F30 - Génétique et amélioration des plantes Sorghum bicolor phénologie photopériodicité croissance feuille date de semis saison mesure (activité) stade de développement végétal variété http://aims.fao.org/aos/agrovoc/c_7247 http://aims.fao.org/aos/agrovoc/c_5774 http://aims.fao.org/aos/agrovoc/c_5809 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_4243 http://aims.fao.org/aos/agrovoc/c_16208 http://aims.fao.org/aos/agrovoc/c_6911 http://aims.fao.org/aos/agrovoc/c_4668 http://aims.fao.org/aos/agrovoc/c_5959 http://aims.fao.org/aos/agrovoc/c_8157 http://aims.fao.org/aos/agrovoc/c_4540 http://aims.fao.org/aos/agrovoc/c_8355 |
author |
Clerget, Benoît Dingkuhn, Michaël Gozé, Eric Rattunde, H. Frederick W. Ney, Bertrand |
author_facet |
Clerget, Benoît Dingkuhn, Michaël Gozé, Eric Rattunde, H. Frederick W. Ney, Bertrand |
author_sort |
Clerget, Benoît |
title |
Variability of phyllochron, plastochron and rate of increase in height in photoperiod-sensitive Sorghum varieties |
title_short |
Variability of phyllochron, plastochron and rate of increase in height in photoperiod-sensitive Sorghum varieties |
title_full |
Variability of phyllochron, plastochron and rate of increase in height in photoperiod-sensitive Sorghum varieties |
title_fullStr |
Variability of phyllochron, plastochron and rate of increase in height in photoperiod-sensitive Sorghum varieties |
title_full_unstemmed |
Variability of phyllochron, plastochron and rate of increase in height in photoperiod-sensitive Sorghum varieties |
title_sort |
variability of phyllochron, plastochron and rate of increase in height in photoperiod-sensitive sorghum varieties |
url |
http://agritrop.cirad.fr/543475/ http://agritrop.cirad.fr/543475/1/document_543475.pdf |
work_keys_str_mv |
AT clergetbenoit variabilityofphyllochronplastochronandrateofincreaseinheightinphotoperiodsensitivesorghumvarieties AT dingkuhnmichael variabilityofphyllochronplastochronandrateofincreaseinheightinphotoperiodsensitivesorghumvarieties AT gozeeric variabilityofphyllochronplastochronandrateofincreaseinheightinphotoperiodsensitivesorghumvarieties AT rattundehfrederickw variabilityofphyllochronplastochronandrateofincreaseinheightinphotoperiodsensitivesorghumvarieties AT neybertrand variabilityofphyllochronplastochronandrateofincreaseinheightinphotoperiodsensitivesorghumvarieties |
_version_ |
1792496813911048192 |