Effects of gibberellic acid on water uptake and germination of sweet sorghum seeds under salinity stress

ABSTRACT Sweet sorghum (Sorghum bicolor [L.] Moench) is a potential feedstock crop in biomass energy development, and is much more resistant to saline soils than crops. Healthy seed germination is critical for the growth cycle of plants, and determines the establishment of seedlings and subsequent c...

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Autores principales:	Zhu,Guanglong, An,Linlin, Jiao,Xiurong, Chen,Xubing, Zhou,Guisheng, McLaughlin,Neil
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2019
Materias:	GA3 germination saline stress sweet sorghum water uptake
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000300415
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spelling	oai:scielo:S0718-583920190003004152019-07-18Effects of gibberellic acid on water uptake and germination of sweet sorghum seeds under salinity stressZhu,GuanglongAn,LinlinJiao,XiurongChen,XubingZhou,GuishengMcLaughlin,Neil GA3 germination saline stress sweet sorghum water uptake ABSTRACT Sweet sorghum (Sorghum bicolor [L.] Moench) is a potential feedstock crop in biomass energy development, and is much more resistant to saline soils than crops. Healthy seed germination is critical for the growth cycle of plants, and determines the establishment of seedlings and subsequent crop production. High salinity conditions can result in difficulty for seed germination and delays the germination period. So, screening salt-tolerant genotypes and method for healthy seed germination under salinity stress are vital to crop production and food security. Therefore, a controlled study was conducted to explore the interactive amendment effects of exogenous gibberellic acid (GA3) and salinity on seed germination process of sweet sorghum. Seeds were presoaked in different levels of GA3 water solutions (0, 144, 288, and 576 μM) and then cultivated in gradient NaCl solutions (0, 50 and 100 mM). The effects of salinity and external GA3 on seed water uptake and germination characteristics were investigated. Compared with the effects of 0 μM GA3 at 0 mM NaCl, slight salt stress of 50 mM NaCl improved the cumulative water uptake, germination and germination index, but high salinity level of 100 mM NaCl significantly inhibited these germination traits. However, either 100 mM NaCl or 576 μM GA3 had significantly negative effects on seed cumulative water uptake, cumulative germination, germination index, and length of germ and radicle. The appropriate concentration of GA3 prominently relieved salt stress and improved the seed germination of sorghum seeds, and the optimum concentration for seed germination of sweet sorghum was 288 μM GA3 at each salinity levelinfo:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.79 n.3 20192019-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000300415en10.4067/S0718-58392019000300415
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	GA3 germination saline stress sweet sorghum water uptake
spellingShingle	GA3 germination saline stress sweet sorghum water uptake Zhu,Guanglong An,Linlin Jiao,Xiurong Chen,Xubing Zhou,Guisheng McLaughlin,Neil Effects of gibberellic acid on water uptake and germination of sweet sorghum seeds under salinity stress
description	ABSTRACT Sweet sorghum (Sorghum bicolor [L.] Moench) is a potential feedstock crop in biomass energy development, and is much more resistant to saline soils than crops. Healthy seed germination is critical for the growth cycle of plants, and determines the establishment of seedlings and subsequent crop production. High salinity conditions can result in difficulty for seed germination and delays the germination period. So, screening salt-tolerant genotypes and method for healthy seed germination under salinity stress are vital to crop production and food security. Therefore, a controlled study was conducted to explore the interactive amendment effects of exogenous gibberellic acid (GA3) and salinity on seed germination process of sweet sorghum. Seeds were presoaked in different levels of GA3 water solutions (0, 144, 288, and 576 μM) and then cultivated in gradient NaCl solutions (0, 50 and 100 mM). The effects of salinity and external GA3 on seed water uptake and germination characteristics were investigated. Compared with the effects of 0 μM GA3 at 0 mM NaCl, slight salt stress of 50 mM NaCl improved the cumulative water uptake, germination and germination index, but high salinity level of 100 mM NaCl significantly inhibited these germination traits. However, either 100 mM NaCl or 576 μM GA3 had significantly negative effects on seed cumulative water uptake, cumulative germination, germination index, and length of germ and radicle. The appropriate concentration of GA3 prominently relieved salt stress and improved the seed germination of sorghum seeds, and the optimum concentration for seed germination of sweet sorghum was 288 μM GA3 at each salinity level
author	Zhu,Guanglong An,Linlin Jiao,Xiurong Chen,Xubing Zhou,Guisheng McLaughlin,Neil
author_facet	Zhu,Guanglong An,Linlin Jiao,Xiurong Chen,Xubing Zhou,Guisheng McLaughlin,Neil
author_sort	Zhu,Guanglong
title	Effects of gibberellic acid on water uptake and germination of sweet sorghum seeds under salinity stress
title_short	Effects of gibberellic acid on water uptake and germination of sweet sorghum seeds under salinity stress
title_full	Effects of gibberellic acid on water uptake and germination of sweet sorghum seeds under salinity stress
title_fullStr	Effects of gibberellic acid on water uptake and germination of sweet sorghum seeds under salinity stress
title_full_unstemmed	Effects of gibberellic acid on water uptake and germination of sweet sorghum seeds under salinity stress
title_sort	effects of gibberellic acid on water uptake and germination of sweet sorghum seeds under salinity stress
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392019000300415
work_keys_str_mv	AT zhuguanglong effectsofgibberellicacidonwateruptakeandgerminationofsweetsorghumseedsundersalinitystress AT anlinlin effectsofgibberellicacidonwateruptakeandgerminationofsweetsorghumseedsundersalinitystress AT jiaoxiurong effectsofgibberellicacidonwateruptakeandgerminationofsweetsorghumseedsundersalinitystress AT chenxubing effectsofgibberellicacidonwateruptakeandgerminationofsweetsorghumseedsundersalinitystress AT zhouguisheng effectsofgibberellicacidonwateruptakeandgerminationofsweetsorghumseedsundersalinitystress AT mclaughlinneil effectsofgibberellicacidonwateruptakeandgerminationofsweetsorghumseedsundersalinitystress
_version_	1714205390986543104

Effects of gibberellic acid on water uptake and germination of sweet sorghum seeds under salinity stress

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