Water-efficient rice performances under drought stress conditions

The use of varieties that are able to adapt well to extreme environments is one strategy to overcome the challenges of decreasing production in sub-optimal land. Indonesian tropical rice varieties (Jatiluhur, IPB 9G, IPB 3S, Hipa 19, Mentik Wangi, Ciherang, Inpari 17, and Mekongga) have been tested...

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Autores principales:	Didi Darmadi, Ahmad Junaedi, Didy Sopandie, Supijatno, Iskandar Lubis, Koki Homma
Formato:	article
Lenguaje:	EN
Publicado:	AIMS Press 2021
Materias:	correlation analysis malondialdehyde leaf water potential proline upland rice Agriculture (General) S1-972
Acceso en línea:	https://doaj.org/article/718912f7398a4500b592ceb0970c7e49
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spelling	oai:doaj.org-article:718912f7398a4500b592ceb0970c7e492021-12-02T01:37:18ZWater-efficient rice performances under drought stress conditions10.3934/agrfood.20210512471-2086https://doaj.org/article/718912f7398a4500b592ceb0970c7e492021-08-01T00:00:00Zhttps://www.aimspress.com/article/doi/10.3934/agrfood.2021051?viewType=HTMLhttps://doaj.org/toc/2471-2086The use of varieties that are able to adapt well to extreme environments is one strategy to overcome the challenges of decreasing production in sub-optimal land. Indonesian tropical rice varieties (Jatiluhur, IPB 9G, IPB 3S, Hipa 19, Mentik Wangi, Ciherang, Inpari 17, and Mekongga) have been tested and established as water-used-efficient varieties in an optimal environment. However, to date, these varieties have not been examined in the suboptimal area, in particular, drought stress conditions. Therefore, this study aimed to evaluate the adaptation response of production, morphological, and physiological character of several water-efficient rice varieties under drought stress in the field. The study was designed in a split-plot with two factors and 4 replications, where the first factor (main plot) was drought stress stages i.e. vegetative (Dv), reproductive (Dr), generative (Dg), and control (Dc). The second factor was rice varieties, consisting of eight varieties, i.e., Jatiluhur, IPB 3S, IPB 9G, Hipa 19, Mentik Wangi, Ciherang, Inpari 17, and Mekongga. The experiment was conducted from May to December 2018 in Muneng Kidul Village, Probolinggo Regency, East Java Province. The experimental variables were morphology, production, leaf scrolling score during drought stress, drought sensitivity index, water use efficiency, physiology and root anatomy. The result showed that upland rice varieties were more tolerant to drought stress and had a higher water use efficiency than lowland rice varieties. This shows that Jatiluhur and IPB 9G which are indicated to be adaptive to drought stress, and have the ability to regulate water use more efficiently when drought stress occurs. Therefore, water use efficiency could be used as selection characters under drought conditions in rice particularly tropical upland rice. Moreover, morphological characters, i.e., grain yiled per plot, weight of pithy grain, weight of shoot biomass and weight of roots could be the selection characters to predict drought tolerant tropical rice. According to physiological characters, photosynthesis rate, transpiration rate, proline content, malondialdehyde content, leaf water potential and leaf greenness could be used as a selection tool to predict water use efficient genotypes in rice. However, further studies are needed to understand the complex mechanisms of water use efficiency by combining various approaches.Didi DarmadiAhmad JunaediDidy SopandieSupijatno Iskandar Lubis Koki HommaAIMS Pressarticlecorrelation analysismalondialdehydeleaf water potentialprolineupland riceAgriculture (General)S1-972ENAIMS Agriculture and Food, Vol 6, Iss 3, Pp 838-863 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	correlation analysis malondialdehyde leaf water potential proline upland rice Agriculture (General) S1-972
spellingShingle	correlation analysis malondialdehyde leaf water potential proline upland rice Agriculture (General) S1-972 Didi Darmadi Ahmad Junaedi Didy Sopandie Supijatno Iskandar Lubis Koki Homma Water-efficient rice performances under drought stress conditions
description	The use of varieties that are able to adapt well to extreme environments is one strategy to overcome the challenges of decreasing production in sub-optimal land. Indonesian tropical rice varieties (Jatiluhur, IPB 9G, IPB 3S, Hipa 19, Mentik Wangi, Ciherang, Inpari 17, and Mekongga) have been tested and established as water-used-efficient varieties in an optimal environment. However, to date, these varieties have not been examined in the suboptimal area, in particular, drought stress conditions. Therefore, this study aimed to evaluate the adaptation response of production, morphological, and physiological character of several water-efficient rice varieties under drought stress in the field. The study was designed in a split-plot with two factors and 4 replications, where the first factor (main plot) was drought stress stages i.e. vegetative (Dv), reproductive (Dr), generative (Dg), and control (Dc). The second factor was rice varieties, consisting of eight varieties, i.e., Jatiluhur, IPB 3S, IPB 9G, Hipa 19, Mentik Wangi, Ciherang, Inpari 17, and Mekongga. The experiment was conducted from May to December 2018 in Muneng Kidul Village, Probolinggo Regency, East Java Province. The experimental variables were morphology, production, leaf scrolling score during drought stress, drought sensitivity index, water use efficiency, physiology and root anatomy. The result showed that upland rice varieties were more tolerant to drought stress and had a higher water use efficiency than lowland rice varieties. This shows that Jatiluhur and IPB 9G which are indicated to be adaptive to drought stress, and have the ability to regulate water use more efficiently when drought stress occurs. Therefore, water use efficiency could be used as selection characters under drought conditions in rice particularly tropical upland rice. Moreover, morphological characters, i.e., grain yiled per plot, weight of pithy grain, weight of shoot biomass and weight of roots could be the selection characters to predict drought tolerant tropical rice. According to physiological characters, photosynthesis rate, transpiration rate, proline content, malondialdehyde content, leaf water potential and leaf greenness could be used as a selection tool to predict water use efficient genotypes in rice. However, further studies are needed to understand the complex mechanisms of water use efficiency by combining various approaches.
format	article
author	Didi Darmadi Ahmad Junaedi Didy Sopandie Supijatno Iskandar Lubis Koki Homma
author_facet	Didi Darmadi Ahmad Junaedi Didy Sopandie Supijatno Iskandar Lubis Koki Homma
author_sort	Didi Darmadi
title	Water-efficient rice performances under drought stress conditions
title_short	Water-efficient rice performances under drought stress conditions
title_full	Water-efficient rice performances under drought stress conditions
title_fullStr	Water-efficient rice performances under drought stress conditions
title_full_unstemmed	Water-efficient rice performances under drought stress conditions
title_sort	water-efficient rice performances under drought stress conditions
publisher	AIMS Press
publishDate	2021
url	https://doaj.org/article/718912f7398a4500b592ceb0970c7e49
work_keys_str_mv	AT dididarmadi waterefficientriceperformancesunderdroughtstressconditions AT ahmadjunaedi waterefficientriceperformancesunderdroughtstressconditions AT didysopandie waterefficientriceperformancesunderdroughtstressconditions AT supijatno waterefficientriceperformancesunderdroughtstressconditions AT iskandarlubis waterefficientriceperformancesunderdroughtstressconditions AT kokihomma waterefficientriceperformancesunderdroughtstressconditions
_version_	1718402965636644864

Water-efficient rice performances under drought stress conditions

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