Growth of Rice (<i>Oryza Sativa</i>L.) Cultivars Under Upland Conditions With Different Levels of Water Supply3. Root System Development, Soil Moisture Changeand Plant Water Status

Kato, Yoichiro; Kamoshita, Akihiko; Yamagishi, Junko; Imoto, Hiroaki; Abe, Jun

doi:10.1626/pps.10.3

Cited by 52 publications

(32 citation statements)

References 44 publications

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“…In two companion papers, we discuss grain yield and yield components in upland rice (Kato et al, 2006a), and relationships among deep root development, water uptake, and plant water status under drought conditions (Kato et al, 2006b). …”

Section: Cultivar Differencesmentioning

confidence: 99%

Growth of Three Rice (Oryza sativaL.) Cultivars under Upland Conditions with Different Levels of Water Supply

Kato

Kamoshita

Yamagishi

et al. 2006

Plant Production Science

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Section: Cultivar Differencesmentioning

confidence: 99%

Growth of Three Rice (Oryza sativaL.) Cultivars under Upland Conditions with Different Levels of Water Supply

Kato

Kamoshita

Yamagishi

et al. 2006

Plant Production Science

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“…Genetic differences in rice root biomass and rooting depth and variation in root morphology with water deficit stress exposure are well documented (Kato et al, 2006(Kato et al, , 2007Henry et al, 2011;Kano et al, 2011). But the underlying mechanisms differing across diverse germplasm that influence water uptake under water deficit stress are not fully understood .…”

mentioning

confidence: 99%

Does Morphological and Anatomical Plasticity during the Vegetative Stage Make Wheat More Tolerant of Water Deficit Stress Than Rice?

et al. 2015

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District of Columbia 20005 (P.S.B.)Water scarcity and the increasing severity of water deficit stress are major challenges to sustaining irrigated rice (Oryza sativa) production. Despite the technologies developed to reduce the water requirement, rice growth is seriously constrained under water deficit stress compared with other dryland cereals such as wheat (Triticum aestivum). We exposed rice cultivars with contrasting responses to water deficit stress and wheat cultivars well adapted to water-limited conditions to the same moisture stress during vegetative growth to unravel the whole-plant (shoot and root morphology) and organ/tissue (root anatomy) responses. Wheat cultivars followed a water-conserving strategy by reducing specific leaf area and developing thicker roots and moderate tillering. In contrast, rice 'IR64' and 'Apo' adopted a rapid water acquisition strategy through thinner roots under water deficit stress. Root diameter, stele and xylem diameter, and xylem number were more responsive and varied with different positions along the nodal root under water deficit stress in wheat, whereas they were relatively conserved in rice cultivars. Increased metaxylem diameter and lower metaxylem number near the root tips and exactly the opposite phenomena at the rootshoot junction facilitated the efficient use of available soil moisture in wheat. Tolerant rice 'Nagina 22' had an advantage in root morphological and anatomical attributes over cultivars IR64 and Apo but lacked plasticity, unlike wheat cultivars exposed to water deficit stress. The key traits determining the adaptation of wheat to dryland conditions have been summarized and discussed.Among cereals, rice (Oryza sativa) and wheat (Triticum aestivum) are the most important staple food crops, and they belong to the family Poaceae. These two cereals share a common ancestor and diverged about 65 million years ago (Sorrells et al., 2003). Rice eventually developed strong adaptation potential for fully flooded conditions across tropical to temperate environments, while wheat became well adapted to aerobic conditions mostly restricted to temperate environments. Rice, with a semiaquatic behavior, consumes about 30% of the total fresh water available for agricultural crops worldwide, which equates to a 2-to 3-fold higher consumption than other cereals such as wheat and maize (Zea mays; Peng et al., 2006). Despite a significantly lower water requirement, the potential yield of wheat in a favorable environment (9 tons ha 21 ) is comparable with the yield of fully flooded rice (9 tons ha 21 ) in the dry season at the International Rice Research Institute (IRRI; Fischer and Edmeades, 2010). Hence, rice records very low water productivity compared with wheat and other dryland cereals. Because of growing concerns about water scarcity and the increased frequency and magnitude of water deficit stress events under current and future climates, increasing or even sustaining rice yield under fully flooded conditions is highly challenging. To minimize the total water requ...

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“…Water deficit in rice planting response more seriously to generative phase rather than to vegetative phase (Kato et al, 2007). Therefore, upland rice cultivation should consider minimum water requirement to avoid a decrease in the yield (Matsumoto et al,2014), whose amount depends on its varieties.…”

Section: Production Per Plant:-mentioning

confidence: 99%

Growth and Yield of Upland Rice With the Addition of Compost From Oil Palm Empty Fruit Bunches and Fungi Mycorrhizal.

Hanum¹

2017

IJAR

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Growth of Rice (Oryza SativaL.) Cultivars Under Upland Conditions With Different Levels of Water Supply3. Root System Development, Soil Moisture Changeand Plant Water Status

Cited by 52 publications

References 44 publications

Growth of Three Rice (Oryza sativaL.) Cultivars under Upland Conditions with Different Levels of Water Supply

Growth of Three Rice (Oryza sativaL.) Cultivars under Upland Conditions with Different Levels of Water Supply

Does Morphological and Anatomical Plasticity during the Vegetative Stage Make Wheat More Tolerant of Water Deficit Stress Than Rice?

Growth and Yield of Upland Rice With the Addition of Compost From Oil Palm Empty Fruit Bunches and Fungi Mycorrhizal.

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