Soybean fruit development and set at the node level under combined photoperiod and radiation conditions

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In soybean, long days during post-flowering increase seed number. This positive photoperiodic effect on seed number has been previously associated with increments in the amount of radiation accumulated during the crop cycle because long days extend the duration of the crop cycle. However, evidence o...

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Autores principales:	Nico, Magalí, Mantese, Anita Ida, Miralles, Daniel Julio, Kantolic, Adriana Graciela
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2016
Materias:	Ciencias Agrarias Development Elongation Embryo Flowering Fructification Glycine max Lag phase Node Photoperiod Pod set Radiation Seed filling Shade Soybean
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/100917 https://ri.conicet.gov.ar/11336/51539 https://academic.oup.com/jxb/article/67/1/365/2885167
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-100917
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Agrarias Development Elongation Embryo Flowering Fructification Glycine max Lag phase Node Photoperiod Pod set Radiation Seed filling Shade Soybean
spellingShingle	Ciencias Agrarias Development Elongation Embryo Flowering Fructification Glycine max Lag phase Node Photoperiod Pod set Radiation Seed filling Shade Soybean Nico, Magalí Mantese, Anita Ida Miralles, Daniel Julio Kantolic, Adriana Graciela Soybean fruit development and set at the node level under combined photoperiod and radiation conditions
topic_facet	Ciencias Agrarias Development Elongation Embryo Flowering Fructification Glycine max Lag phase Node Photoperiod Pod set Radiation Seed filling Shade Soybean
description	In soybean, long days during post-flowering increase seed number. This positive photoperiodic effect on seed number has been previously associated with increments in the amount of radiation accumulated during the crop cycle because long days extend the duration of the crop cycle. However, evidence of intra-nodal processes independent of the availability of assimilates suggests that photoperiodic effects at the node level might also contribute to pod set. This work aims to identify the main mechanisms responsible for the increase in pod number per node in response to long days; including the dynamics of flowering, pod development, growth and set at the node level. Long days increased pods per node on the main stems, by increasing pods on lateral racemes (usually dominated positions) at some main stem nodes. Long days lengthened the flowering period and thereby increased the number of opened flowers on lateral racemes. The flowering period was prolonged under long days because effective seed filling was delayed on primary racemes (dominant positions). Long days also delayed the development of flowers into pods with filling seeds, delaying the initiation of pod elongation without modifying pod elongation rate. The embryo development matched the external pod length irrespective of the pod's chronological age. These results suggest that long days during post-flowering enhance pod number per node through a relief of the competition between pods of different hierarchy within the node. The photoperiodic effect on the development of dominant pods, delaying their elongation and therefore postponing their active growth, extends flowering and allows pod set at positions that are usually dominated.
format	Articulo Articulo
author	Nico, Magalí Mantese, Anita Ida Miralles, Daniel Julio Kantolic, Adriana Graciela
author_facet	Nico, Magalí Mantese, Anita Ida Miralles, Daniel Julio Kantolic, Adriana Graciela
author_sort	Nico, Magalí
title	Soybean fruit development and set at the node level under combined photoperiod and radiation conditions
title_short	Soybean fruit development and set at the node level under combined photoperiod and radiation conditions
title_full	Soybean fruit development and set at the node level under combined photoperiod and radiation conditions
title_fullStr	Soybean fruit development and set at the node level under combined photoperiod and radiation conditions
title_full_unstemmed	Soybean fruit development and set at the node level under combined photoperiod and radiation conditions
title_sort	soybean fruit development and set at the node level under combined photoperiod and radiation conditions
publishDate	2016
url	http://sedici.unlp.edu.ar/handle/10915/100917 https://ri.conicet.gov.ar/11336/51539 https://academic.oup.com/jxb/article/67/1/365/2885167
work_keys_str_mv	AT nicomagali soybeanfruitdevelopmentandsetatthenodelevelundercombinedphotoperiodandradiationconditions AT manteseanitaida soybeanfruitdevelopmentandsetatthenodelevelundercombinedphotoperiodandradiationconditions AT mirallesdanieljulio soybeanfruitdevelopmentandsetatthenodelevelundercombinedphotoperiodandradiationconditions AT kantolicadrianagraciela soybeanfruitdevelopmentandsetatthenodelevelundercombinedphotoperiodandradiationconditions
bdutipo_str	Repositorios
_version_	1764820440233017345

Soybean fruit development and set at the node level under combined photoperiod and radiation conditions

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