Effects of water, salt and nitrogen stress on sunflower (Helianthus annuus L.) at different growth stages

Experiments in soil columns were conducted to evaluate the single and interactive effects of water, salt and nitrogen stress at different sunflower (Helianthus annuus L.) growth stages in Hetao Irrigation District, China. The study factors included soil salinity (S0: ECe=2.5-3.6 dS m-1; S1: ECe=9.6-...

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Autores principales:	Ma,Tao, Zeng,Wenzhi, Li,Qi, Wu,Jingwei, Huang,Jiesheng
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2016
Materias:	Sunflower soil moisture salinity nitrogen application rate interactive effects growth stages
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000400014
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spelling	oai:scielo:S0718-951620160004000142017-03-07Effects of water, salt and nitrogen stress on sunflower (Helianthus annuus L.) at different growth stagesMa,TaoZeng,WenzhiLi,QiWu,JingweiHuang,Jiesheng Sunflower soil moisture salinity nitrogen application rate interactive effects growth stages Experiments in soil columns were conducted to evaluate the single and interactive effects of water, salt and nitrogen stress at different sunflower (Helianthus annuus L.) growth stages in Hetao Irrigation District, China. The study factors included soil salinity (S0: ECe=2.5-3.6 dS m-1; S1: ECe=9.6-10.7 dS m-1), soil moisture (W0: 35％-55％of field water capacity; W1: 75％-100％of field water capacity), and nitrogen application rates (N0: 0 kg N ha-1; N1: 135 kg N ha-1). The results indicated that the S1 treatments increased the duration of the seedling stages by 23.91% but decreased the duration of maturity by 33.09% on average compared with the S0 treatments. Similarly, water deficit significantly retarded anthesis and prolonged the total growth period. The comprehensive stress assessment index (CSAI) was obtained using principal component analysis (PCA) and membership function analysis (MFA). The CSAIs in different treatments showed that soil salinity was the main limiting factor for sunflower vegetative growth from seeding to bud (SS1), whereas water stress dominated the development from bud to flowering (SS2) and flowering to maturity (SS3). Although statistically non-significant, nitrogen stress was intensified after bud initiation and the CSAI in W1S0N0 treatment was 40.68% lower than W1S1N1 treatment in SS3. Moreover, the interactive effects of the three factors were complicated. Our experiments suggested that adequate water supply after bud initiation and the reasonable nitrogen application rate (135 kg N ha-1) can alleviate adverse effects on sunflower reproductive growth under different saline conditions.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.16 n.4 20162016-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000400014en10.4067/S0718-95162016005000075
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Sunflower soil moisture salinity nitrogen application rate interactive effects growth stages
spellingShingle	Sunflower soil moisture salinity nitrogen application rate interactive effects growth stages Ma,Tao Zeng,Wenzhi Li,Qi Wu,Jingwei Huang,Jiesheng Effects of water, salt and nitrogen stress on sunflower (Helianthus annuus L.) at different growth stages
description	Experiments in soil columns were conducted to evaluate the single and interactive effects of water, salt and nitrogen stress at different sunflower (Helianthus annuus L.) growth stages in Hetao Irrigation District, China. The study factors included soil salinity (S0: ECe=2.5-3.6 dS m-1; S1: ECe=9.6-10.7 dS m-1), soil moisture (W0: 35％-55％of field water capacity; W1: 75％-100％of field water capacity), and nitrogen application rates (N0: 0 kg N ha-1; N1: 135 kg N ha-1). The results indicated that the S1 treatments increased the duration of the seedling stages by 23.91% but decreased the duration of maturity by 33.09% on average compared with the S0 treatments. Similarly, water deficit significantly retarded anthesis and prolonged the total growth period. The comprehensive stress assessment index (CSAI) was obtained using principal component analysis (PCA) and membership function analysis (MFA). The CSAIs in different treatments showed that soil salinity was the main limiting factor for sunflower vegetative growth from seeding to bud (SS1), whereas water stress dominated the development from bud to flowering (SS2) and flowering to maturity (SS3). Although statistically non-significant, nitrogen stress was intensified after bud initiation and the CSAI in W1S0N0 treatment was 40.68% lower than W1S1N1 treatment in SS3. Moreover, the interactive effects of the three factors were complicated. Our experiments suggested that adequate water supply after bud initiation and the reasonable nitrogen application rate (135 kg N ha-1) can alleviate adverse effects on sunflower reproductive growth under different saline conditions.
author	Ma,Tao Zeng,Wenzhi Li,Qi Wu,Jingwei Huang,Jiesheng
author_facet	Ma,Tao Zeng,Wenzhi Li,Qi Wu,Jingwei Huang,Jiesheng
author_sort	Ma,Tao
title	Effects of water, salt and nitrogen stress on sunflower (Helianthus annuus L.) at different growth stages
title_short	Effects of water, salt and nitrogen stress on sunflower (Helianthus annuus L.) at different growth stages
title_full	Effects of water, salt and nitrogen stress on sunflower (Helianthus annuus L.) at different growth stages
title_fullStr	Effects of water, salt and nitrogen stress on sunflower (Helianthus annuus L.) at different growth stages
title_full_unstemmed	Effects of water, salt and nitrogen stress on sunflower (Helianthus annuus L.) at different growth stages
title_sort	effects of water, salt and nitrogen stress on sunflower (helianthus annuus l.) at different growth stages
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000400014
work_keys_str_mv	AT matao effectsofwatersaltandnitrogenstressonsunflowerhelianthusannuuslatdifferentgrowthstages AT zengwenzhi effectsofwatersaltandnitrogenstressonsunflowerhelianthusannuuslatdifferentgrowthstages AT liqi effectsofwatersaltandnitrogenstressonsunflowerhelianthusannuuslatdifferentgrowthstages AT wujingwei effectsofwatersaltandnitrogenstressonsunflowerhelianthusannuuslatdifferentgrowthstages AT huangjiesheng effectsofwatersaltandnitrogenstressonsunflowerhelianthusannuuslatdifferentgrowthstages
_version_	1714206542777024512

Effects of water, salt and nitrogen stress on sunflower (Helianthus annuus L.) at different growth stages

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