Developing functional relationships between sesame growth, development, and nitrogen nutrition during early season

Abstract Plants, being sessile, are subjected to multiple environmental stresses of varying intensity throughout their life cycle. Among the stresses, low fertility, drought, salinity, and nonoptimal temperatures limit crop productivity worldwide. Functional relationships between leaf N and crop gro...

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Autores principales:	Akanksha Sehgal, Callie Ann Smith, Charles Hunt Walne, Daryl Chastain, Mark Shankle, Kambham Raja Reddy
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Agriculture S Environmental sciences GE1-350
Acceso en línea:	https://doaj.org/article/a432c78c91494f24875672a5571475fc
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spelling	oai:doaj.org-article:a432c78c91494f24875672a5571475fc2021-11-24T11:36:03ZDeveloping functional relationships between sesame growth, development, and nitrogen nutrition during early season2639-669610.1002/agg2.20198https://doaj.org/article/a432c78c91494f24875672a5571475fc2021-01-01T00:00:00Zhttps://doi.org/10.1002/agg2.20198https://doaj.org/toc/2639-6696Abstract Plants, being sessile, are subjected to multiple environmental stresses of varying intensity throughout their life cycle. Among the stresses, low fertility, drought, salinity, and nonoptimal temperatures limit crop productivity worldwide. Functional relationships between leaf N and crop growth are prerequisites to developing management tools that optimize productivity in the field. An outdoor pot‐culture experiment was conducted to determine the relationship between leaf N and sesame (Sesamum indicum L.) growth and development. Plants were grown in pots filled with fine sand and irrigated with full‐strength Hoagland's nutrient solution until 10 d after sowing (DAS). Five N treatments were then imposed: one treatment of full‐strength Hoagland's nutrient solution (control, 100% N), and four reformulations of Hoagland's nutrient solution containing reduced N at 60, 20, 10, and 0% of the control. Treatments were maintained until plants were harvested at 31 DAS. Growth, including several root traits, photosynthesis, and leaf N were measured at the end of the experiment. Maximum values were achieved at 5.3% leaf N in the leaves except for transpiration rate, stomatal conductance, and root/shoot ratio. Even though all growth rates declined with lower leaf N, the leaf area expansion among shoot and root volume among the root growth traits were most sensitive to leaf N. Among the root developmental traits, number of root tips was more sensitive to leaf N than other parameters. Among the plant dry components, leaf dry weight had the most considerable decrease. The root/shoot ratio increased under N deficiency. These N stress response indices and critical leaf N levels for various growth processes will help model and manage sesame crops in the field.Akanksha SehgalCallie Ann SmithCharles Hunt WalneDaryl ChastainMark ShankleKambham Raja ReddyWileyarticleAgricultureSEnvironmental sciencesGE1-350ENAgrosystems, Geosciences & Environment, Vol 4, Iss 3, Pp n/a-n/a (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Agriculture S Environmental sciences GE1-350
spellingShingle	Agriculture S Environmental sciences GE1-350 Akanksha Sehgal Callie Ann Smith Charles Hunt Walne Daryl Chastain Mark Shankle Kambham Raja Reddy Developing functional relationships between sesame growth, development, and nitrogen nutrition during early season
description	Abstract Plants, being sessile, are subjected to multiple environmental stresses of varying intensity throughout their life cycle. Among the stresses, low fertility, drought, salinity, and nonoptimal temperatures limit crop productivity worldwide. Functional relationships between leaf N and crop growth are prerequisites to developing management tools that optimize productivity in the field. An outdoor pot‐culture experiment was conducted to determine the relationship between leaf N and sesame (Sesamum indicum L.) growth and development. Plants were grown in pots filled with fine sand and irrigated with full‐strength Hoagland's nutrient solution until 10 d after sowing (DAS). Five N treatments were then imposed: one treatment of full‐strength Hoagland's nutrient solution (control, 100% N), and four reformulations of Hoagland's nutrient solution containing reduced N at 60, 20, 10, and 0% of the control. Treatments were maintained until plants were harvested at 31 DAS. Growth, including several root traits, photosynthesis, and leaf N were measured at the end of the experiment. Maximum values were achieved at 5.3% leaf N in the leaves except for transpiration rate, stomatal conductance, and root/shoot ratio. Even though all growth rates declined with lower leaf N, the leaf area expansion among shoot and root volume among the root growth traits were most sensitive to leaf N. Among the root developmental traits, number of root tips was more sensitive to leaf N than other parameters. Among the plant dry components, leaf dry weight had the most considerable decrease. The root/shoot ratio increased under N deficiency. These N stress response indices and critical leaf N levels for various growth processes will help model and manage sesame crops in the field.
format	article
author	Akanksha Sehgal Callie Ann Smith Charles Hunt Walne Daryl Chastain Mark Shankle Kambham Raja Reddy
author_facet	Akanksha Sehgal Callie Ann Smith Charles Hunt Walne Daryl Chastain Mark Shankle Kambham Raja Reddy
author_sort	Akanksha Sehgal
title	Developing functional relationships between sesame growth, development, and nitrogen nutrition during early season
title_short	Developing functional relationships between sesame growth, development, and nitrogen nutrition during early season
title_full	Developing functional relationships between sesame growth, development, and nitrogen nutrition during early season
title_fullStr	Developing functional relationships between sesame growth, development, and nitrogen nutrition during early season
title_full_unstemmed	Developing functional relationships between sesame growth, development, and nitrogen nutrition during early season
title_sort	developing functional relationships between sesame growth, development, and nitrogen nutrition during early season
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/a432c78c91494f24875672a5571475fc
work_keys_str_mv	AT akankshasehgal developingfunctionalrelationshipsbetweensesamegrowthdevelopmentandnitrogennutritionduringearlyseason AT callieannsmith developingfunctionalrelationshipsbetweensesamegrowthdevelopmentandnitrogennutritionduringearlyseason AT charleshuntwalne developingfunctionalrelationshipsbetweensesamegrowthdevelopmentandnitrogennutritionduringearlyseason AT darylchastain developingfunctionalrelationshipsbetweensesamegrowthdevelopmentandnitrogennutritionduringearlyseason AT markshankle developingfunctionalrelationshipsbetweensesamegrowthdevelopmentandnitrogennutritionduringearlyseason AT kambhamrajareddy developingfunctionalrelationshipsbetweensesamegrowthdevelopmentandnitrogennutritionduringearlyseason
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Developing functional relationships between sesame growth, development, and nitrogen nutrition during early season

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