Genotypic Variation in Response of Rainfed Lowland Rice to Drought and Rewatering. III. Water extraction during the drought period

Kamoshita, Akihiko; Wade, Len J.; Yamauchi, Akira

doi:10.1626/pps.3.189

Cited by 71 publications

(60 citation statements)

References 19 publications

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“…Timely and enhanced soil water uptake by equally large root systems seems to be one of the most promising approaches for enhancing drought tolerance in legumes and this association was documented in many studies (Kamoshita et al 2000;Okada et al 2002;Kashiwagi et al 2006Kashiwagi et al , 2015Bernier et al 2009;Bandyopadhyay 2014). However, there are other studies that contradict this view on the basis of root system sufficiency, soil water environments and on the timings of soil water uptake.…”

Section: Introductionmentioning

confidence: 92%

Genotypic variation in soil water use and root distribution and their implications for drought tolerance in chickpea

Ramamoorthy

Krishnamurthy

Upadhyaya

et al. 2017

Functional Plant Biol.

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Abstract. Chickpeas are often grown under receding soil moisture and suffer~50% yield losses due to drought stress. The timing of soil water use is considered critical for the efficient use of water under drought and to reduce yield losses. Therefore the root growth and the soil water uptake of 12 chickpea genotypes known for contrasts in drought and rooting response were monitored throughout the growth period both under drought and optimal irrigation. Root distribution reduced in the surface and increased in the deep soil layers below 30 cm in response to drought. Soil water uptake was the maximum at 45-60 cm soil depth under drought whereas it was the maximum at shallower (15-30 and 30-45 cm) soil depths when irrigated. The total water uptake under drought was 1-fold less than optimal irrigation. The amount of water left unused remained the same across watering regimes. All the drought sensitive chickpea genotypes were inferior in root distribution and soil water uptake but the timing of water uptake varied among drought tolerant genotypes. Superiority in water uptake in most stages and the total water use determined the best adaptation. The water use at 15-30 cm soil depth ensured greater uptake from lower depths and the soil water use from 90-120 cm soil was critical for best drought adaptation. Root length density and the soil water uptake across soil depths were closely associated except at the surface or the ultimate soil depths of root presence.

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Section: Introductionmentioning

confidence: 92%

Genotypic variation in soil water use and root distribution and their implications for drought tolerance in chickpea

Ramamoorthy

Krishnamurthy

Upadhyaya

et al. 2017

Functional Plant Biol.

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“…Thus, root characteristics are important for leaf expansion under conditions of water stress. However, conflicting evidence has also been reported (e.g., [10]). Kamoshita et al [10] reported the lack of any clear relationship between LWP and RLD.…”

Section: Discussionmentioning

confidence: 99%

“…However, conflicting evidence has also been reported (e.g., [10]). Kamoshita et al [10] reported the lack of any clear relationship between LWP and RLD. In this study, we measured pre-dawn LWP in the severely water-deficient condition (under <0.1 m 3 •m −3 SMC).…”

Section: Discussionmentioning

confidence: 99%

Adaptability of High-Yielding Rice Cultivars in Relation to Biomass Productivity under Moderately Water Stressed Upland Conditions

Hyoda¹,

Homma²,

Shiraiwa³

et al. 2015

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Recent studies have focused on the improvement of rice productivity under aerobic conditions for times when water resources and food production are limited. This study aimed to evaluate the adaptability of high-yielding rice cultivars to moderately water-stressed upland conditions in order to contribute breeding. A three-year field experiment in the temperate climate of Kyoto, Japan, indicated that the decrease in yield was mainly derived from a decrease in above-ground total dry matter (TDM) rather than a decrease in harvest index (HI). Although the decrease in TDM was mostly caused by a decrease in radiation use efficiency (RUE), we determined that the key to adapting high-yielding cultivars to upland conditions is intercepted radiation per day (IRPD), governed by leaf area index (LAI). Although the effect was not robust, LAI growth under upland conditions was associated with root length density. RUE was dependent on leaf water potential (LWP), indicating that a plant's ability to maintain LWP under water-stressed conditions is important. The results also suggest the necessity of a canopy analyzer to evaluate LAI, as well as an infrared radiation thermometer to evaluate RUE. Performing such measurements during breeding efforts allows us to select for genotypes that are suitable for less stressed aerobic conditions.

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“…One meter canals were placed between the water treatments (with and without standing water). The total experimental size was 730 m 2 . The dikes were constructed between each plot, while canals for irrigation and drainage were dug around the …”

Section: Crop Management and Fertilizer Applicationmentioning

confidence: 99%

“…About 7% -10% of total rice growing area acreage is under submerged conditions for 2 -10 days or even longer. Such conditions do considerable damage to the rice crop stand because delayed replanting does not favor optimum production [2]. According to [3], increasing N rates resulted in higher rice paddy yields in plots without standing water than with continuous standing water.…”

Section: Introductionmentioning

confidence: 99%

Agronomic and Physiological Responses of Rice (<i>Oryza sativa</i> L.) under Different Water Management Systems, Fertilizer Types and Seedling Age

Ko¹,

Hirai²,

Zamora³

et al. 2017

AJPS

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A field experiment was conducted to evaluate the agronomic and physiological responses of rice under different water management systems, types of fertilizer and seedling age. This experiment was done at the farm of Agri Park, College of Agriculture, Central Experimental Station (CES), Crop Science Cluster of the University of the Philippines Los Baños, College Laguna during 2013. The strip-split plot design with three replications was used with the two types of fertilizer (vermicompost and chemical fertilizer), water management (with and without standing water) and two seedling ages (10 and 14-d old) were the treatments in the experiment. Chemical fertilizer produced the highest grain yield, total dry matter (TDM), leaf area index (LAI), net assimilation rate (NAR) and crop growth rate (CGR). Most of these characters significantly increased in 10-d old seedlings with chemical fertilizer without standing water. The shorter phyllochron and higher root pulling resistance (RPR) were observed in 10-d old seedlings without standing water. For the variety NSIC Rc 216, the use of 10-d old seedlings grown without standing water with chemical fertilizer is the optimum conditions for the better growth and high productivity.

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Genotypic Variation in Response of Rainfed Lowland Rice to Drought and Rewatering. III. Water extraction during the drought period

Cited by 71 publications

References 19 publications

Genotypic variation in soil water use and root distribution and their implications for drought tolerance in chickpea

Genotypic variation in soil water use and root distribution and their implications for drought tolerance in chickpea

Adaptability of High-Yielding Rice Cultivars in Relation to Biomass Productivity under Moderately Water Stressed Upland Conditions

Agronomic and Physiological Responses of Rice (<i>Oryza sativa</i> L.) under Different Water Management Systems, Fertilizer Types and Seedling Age

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Genotypic Variation in Response of Rainfed Lowland Rice to Drought and Rewatering. III. Water extraction during the drought period

Cited by 71 publications

References 19 publications

Genotypic variation in soil water use and root distribution and their implications for drought tolerance in chickpea

Genotypic variation in soil water use and root distribution and their implications for drought tolerance in chickpea

Adaptability of High-Yielding Rice Cultivars in Relation to Biomass Productivity under Moderately Water Stressed Upland Conditions

Agronomic and Physiological Responses of Rice (&lt;i&gt;Oryza sativa&lt;/i&gt; L.) under Different Water Management Systems, Fertilizer Types and Seedling Age

Contact Info

Product

Resources

About

Agronomic and Physiological Responses of Rice (<i>Oryza sativa</i> L.) under Different Water Management Systems, Fertilizer Types and Seedling Age