Physiological and Agronomic Traits of Certain Sugarcane Genotypes Grown under Field Conditions as Influenced by Early Drought Stress

Drought is one of the important problems that drastically affect sugarcane production in several countries. The objective of this research was to investigate the effects of early drought stress on physiological parameters and agronomic traits of six sugarcane genotypes under field conditions. The ex...

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Autores principales:	Nithaya Leanasawat, Manit Kosittrakun, Watanachai Lontom, Patcharin Songsri
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	sugarcane water-deficit stress net photosynthetic rate cane yield sugar yield Agriculture S
Acceso en línea:	https://doaj.org/article/621f17343a604025b8a26e21a8381763
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spelling	oai:doaj.org-article:621f17343a604025b8a26e21a83817632021-11-25T16:11:25ZPhysiological and Agronomic Traits of Certain Sugarcane Genotypes Grown under Field Conditions as Influenced by Early Drought Stress10.3390/agronomy111123192073-4395https://doaj.org/article/621f17343a604025b8a26e21a83817632021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4395/11/11/2319https://doaj.org/toc/2073-4395Drought is one of the important problems that drastically affect sugarcane production in several countries. The objective of this research was to investigate the effects of early drought stress on physiological parameters and agronomic traits of six sugarcane genotypes under field conditions. The experiment was arranged in a split plot in a completely randomized block design with three replications. The main plot was represented by three different water regimes: field capacity (FC), ½FC and rain-fed (RF), whereas the subplot consisted of six sugarcane genotypes: KK3 (drought tolerant), Q117 (drought tolerant), LK92-11 (drought susceptible), Ths98-271 (<i>S. spontaneum</i>), KK08-214 (the F1 hybrid derived from <i>S. spontaneum</i> × <i>S. officinarum</i>) and E08-4-019 (the F1 hybrid derived from <i>Erianthus</i> sp. × <i>S. officinarum</i>). The six sugarcane genotypes were subjected to three irrigation treatments. The 45-day-old plants of all sugarcane genotypes were exposed to drought by withholding water for 72 days. Certain photosynthetic parameters were measured in the leaves of four-month-old plants. Certain cane yield parameters were measured in the 12-month-old plants. The results showed that early drought stress decreased the maximum quantum yield of PSII efficiency, net photosynthetic rate, transpiration rate and stomatal conductance. Drought stress significantly (<i>p</i> ≤ 0.01) decreased cane yield. The cane yield and sugar yield of KK3 were significantly (<i>p</i> ≤ 0.01) higher than those of the other genotypes. The wild-type sugarcane and the F1 hybrids derived from the wild and commercial sugarcane could maintain better photosynthetic performance while encountering early drought stress.Nithaya LeanasawatManit KosittrakunWatanachai LontomPatcharin SongsriMDPI AGarticlesugarcanewater-deficit stressnet photosynthetic ratecane yieldsugar yieldAgricultureSENAgronomy, Vol 11, Iss 2319, p 2319 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	sugarcane water-deficit stress net photosynthetic rate cane yield sugar yield Agriculture S
spellingShingle	sugarcane water-deficit stress net photosynthetic rate cane yield sugar yield Agriculture S Nithaya Leanasawat Manit Kosittrakun Watanachai Lontom Patcharin Songsri Physiological and Agronomic Traits of Certain Sugarcane Genotypes Grown under Field Conditions as Influenced by Early Drought Stress
description	Drought is one of the important problems that drastically affect sugarcane production in several countries. The objective of this research was to investigate the effects of early drought stress on physiological parameters and agronomic traits of six sugarcane genotypes under field conditions. The experiment was arranged in a split plot in a completely randomized block design with three replications. The main plot was represented by three different water regimes: field capacity (FC), ½FC and rain-fed (RF), whereas the subplot consisted of six sugarcane genotypes: KK3 (drought tolerant), Q117 (drought tolerant), LK92-11 (drought susceptible), Ths98-271 (<i>S. spontaneum</i>), KK08-214 (the F1 hybrid derived from <i>S. spontaneum</i> × <i>S. officinarum</i>) and E08-4-019 (the F1 hybrid derived from <i>Erianthus</i> sp. × <i>S. officinarum</i>). The six sugarcane genotypes were subjected to three irrigation treatments. The 45-day-old plants of all sugarcane genotypes were exposed to drought by withholding water for 72 days. Certain photosynthetic parameters were measured in the leaves of four-month-old plants. Certain cane yield parameters were measured in the 12-month-old plants. The results showed that early drought stress decreased the maximum quantum yield of PSII efficiency, net photosynthetic rate, transpiration rate and stomatal conductance. Drought stress significantly (<i>p</i> ≤ 0.01) decreased cane yield. The cane yield and sugar yield of KK3 were significantly (<i>p</i> ≤ 0.01) higher than those of the other genotypes. The wild-type sugarcane and the F1 hybrids derived from the wild and commercial sugarcane could maintain better photosynthetic performance while encountering early drought stress.
format	article
author	Nithaya Leanasawat Manit Kosittrakun Watanachai Lontom Patcharin Songsri
author_facet	Nithaya Leanasawat Manit Kosittrakun Watanachai Lontom Patcharin Songsri
author_sort	Nithaya Leanasawat
title	Physiological and Agronomic Traits of Certain Sugarcane Genotypes Grown under Field Conditions as Influenced by Early Drought Stress
title_short	Physiological and Agronomic Traits of Certain Sugarcane Genotypes Grown under Field Conditions as Influenced by Early Drought Stress
title_full	Physiological and Agronomic Traits of Certain Sugarcane Genotypes Grown under Field Conditions as Influenced by Early Drought Stress
title_fullStr	Physiological and Agronomic Traits of Certain Sugarcane Genotypes Grown under Field Conditions as Influenced by Early Drought Stress
title_full_unstemmed	Physiological and Agronomic Traits of Certain Sugarcane Genotypes Grown under Field Conditions as Influenced by Early Drought Stress
title_sort	physiological and agronomic traits of certain sugarcane genotypes grown under field conditions as influenced by early drought stress
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/621f17343a604025b8a26e21a8381763
work_keys_str_mv	AT nithayaleanasawat physiologicalandagronomictraitsofcertainsugarcanegenotypesgrownunderfieldconditionsasinfluencedbyearlydroughtstress AT manitkosittrakun physiologicalandagronomictraitsofcertainsugarcanegenotypesgrownunderfieldconditionsasinfluencedbyearlydroughtstress AT watanachailontom physiologicalandagronomictraitsofcertainsugarcanegenotypesgrownunderfieldconditionsasinfluencedbyearlydroughtstress AT patcharinsongsri physiologicalandagronomictraitsofcertainsugarcanegenotypesgrownunderfieldconditionsasinfluencedbyearlydroughtstress
_version_	1718413318926893056

Physiological and Agronomic Traits of Certain Sugarcane Genotypes Grown under Field Conditions as Influenced by Early Drought Stress

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