Gene Action Governing the Inheritance of Stomatal Conductance in Four Wheat Crosses Under High Temperature Stress Condition

The knowledge pertaining to gene action and interactions involved in the inheritance of a character in different generations is crucial for determining the breeding strategies in crop improvement program. In the present study, the gene action of stomatal conductance was determined in four wheat popu...

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Autores principales:	Kalasapura Thimmappa Ramya, Amasiddha Bellundagi, Harikrishna, Neha Rai, Neelu Jain, Pradeep Kumar Singh, Ajay Arora, Gyanendra Pratap Singh, Kumble Vinod Prabhu
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	wheat stomatal conductance gene action temperature stress growth stage Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/734f365b333c4569913fa446bd6fab99
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spelling	oai:doaj.org-article:734f365b333c4569913fa446bd6fab992021-11-16T05:08:05ZGene Action Governing the Inheritance of Stomatal Conductance in Four Wheat Crosses Under High Temperature Stress Condition1664-462X10.3389/fpls.2021.658443https://doaj.org/article/734f365b333c4569913fa446bd6fab992021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fpls.2021.658443/fullhttps://doaj.org/toc/1664-462XThe knowledge pertaining to gene action and interactions involved in the inheritance of a character in different generations is crucial for determining the breeding strategies in crop improvement program. In the present study, the gene action of stomatal conductance was determined in four wheat populations under high elevated temperatures coupled with late sowing at experimental farm, ICAR-Indian Agricultural Research Institute, New Delhi, India. Steady-state SC-1 leaf porometer was used to record stomatal conductance on adaxial and abaxial leaf surface at late boot (Z 49–50), early milk (Z 73), and late milk (Z 77) growth stages. Evidence for nuclear genetic control of stomatal conductance was strong, with large and repeatable genetic difference observed for parents and progeny across all the four crosses. Mean stomatal conductance for genotypes, GW 322 and GW 366, was consistently low at late boot, early milk, and late milk under timely sown, late sown, and very late sown condition, whereas the converse was true for the high-conducting parents, KAUZ/AA//KAUZ and RAC 875. Additive and additive x additive epistatic effects were large and reasonably consistent at three stages and in all crosses. Detection of epistasis and evidence of transgressive segregation suggested that variation for stomatal conductance was under oligo or polygenic control. Thus, it is conceivable that independent alleles at two or more loci could be pyramided into a single family for increased or decreased stomatal conductance. Additive-based gene action also facilitates with simple selection at early generation to improve stomatal conductance in expected direction. This is the first report on estimates of gene action for stomatal conductance of flag leaf under heat stress condition during reproductive and grain filling stage.Kalasapura Thimmappa RamyaAmasiddha Bellundagi HarikrishnaNeha RaiNeelu JainPradeep Kumar SinghAjay AroraGyanendra Pratap SinghKumble Vinod PrabhuFrontiers Media S.A.articlewheatstomatal conductancegene actiontemperature stressgrowth stagePlant cultureSB1-1110ENFrontiers in Plant Science, Vol 12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	wheat stomatal conductance gene action temperature stress growth stage Plant culture SB1-1110
spellingShingle	wheat stomatal conductance gene action temperature stress growth stage Plant culture SB1-1110 Kalasapura Thimmappa Ramya Amasiddha Bellundagi Harikrishna Neha Rai Neelu Jain Pradeep Kumar Singh Ajay Arora Gyanendra Pratap Singh Kumble Vinod Prabhu Gene Action Governing the Inheritance of Stomatal Conductance in Four Wheat Crosses Under High Temperature Stress Condition
description	The knowledge pertaining to gene action and interactions involved in the inheritance of a character in different generations is crucial for determining the breeding strategies in crop improvement program. In the present study, the gene action of stomatal conductance was determined in four wheat populations under high elevated temperatures coupled with late sowing at experimental farm, ICAR-Indian Agricultural Research Institute, New Delhi, India. Steady-state SC-1 leaf porometer was used to record stomatal conductance on adaxial and abaxial leaf surface at late boot (Z 49–50), early milk (Z 73), and late milk (Z 77) growth stages. Evidence for nuclear genetic control of stomatal conductance was strong, with large and repeatable genetic difference observed for parents and progeny across all the four crosses. Mean stomatal conductance for genotypes, GW 322 and GW 366, was consistently low at late boot, early milk, and late milk under timely sown, late sown, and very late sown condition, whereas the converse was true for the high-conducting parents, KAUZ/AA//KAUZ and RAC 875. Additive and additive x additive epistatic effects were large and reasonably consistent at three stages and in all crosses. Detection of epistasis and evidence of transgressive segregation suggested that variation for stomatal conductance was under oligo or polygenic control. Thus, it is conceivable that independent alleles at two or more loci could be pyramided into a single family for increased or decreased stomatal conductance. Additive-based gene action also facilitates with simple selection at early generation to improve stomatal conductance in expected direction. This is the first report on estimates of gene action for stomatal conductance of flag leaf under heat stress condition during reproductive and grain filling stage.
format	article
author	Kalasapura Thimmappa Ramya Amasiddha Bellundagi Harikrishna Neha Rai Neelu Jain Pradeep Kumar Singh Ajay Arora Gyanendra Pratap Singh Kumble Vinod Prabhu
author_facet	Kalasapura Thimmappa Ramya Amasiddha Bellundagi Harikrishna Neha Rai Neelu Jain Pradeep Kumar Singh Ajay Arora Gyanendra Pratap Singh Kumble Vinod Prabhu
author_sort	Kalasapura Thimmappa Ramya
title	Gene Action Governing the Inheritance of Stomatal Conductance in Four Wheat Crosses Under High Temperature Stress Condition
title_short	Gene Action Governing the Inheritance of Stomatal Conductance in Four Wheat Crosses Under High Temperature Stress Condition
title_full	Gene Action Governing the Inheritance of Stomatal Conductance in Four Wheat Crosses Under High Temperature Stress Condition
title_fullStr	Gene Action Governing the Inheritance of Stomatal Conductance in Four Wheat Crosses Under High Temperature Stress Condition
title_full_unstemmed	Gene Action Governing the Inheritance of Stomatal Conductance in Four Wheat Crosses Under High Temperature Stress Condition
title_sort	gene action governing the inheritance of stomatal conductance in four wheat crosses under high temperature stress condition
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/734f365b333c4569913fa446bd6fab99
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Gene Action Governing the Inheritance of Stomatal Conductance in Four Wheat Crosses Under High Temperature Stress Condition

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