Agronomic Traits for High Productivity of Rice Grown in Aerobic Culture in Progeny of a Japonica Cultivar and a High-Yielding Indica Cultivar

Katsura, Keisuke

doi:10.1626/pps.16.317

Cited by 4 publications

(4 citation statements)

References 27 publications

(35 reference statements)

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“…This was also true for rice plants in aerobic culture: vigorous N uptake during the reproductive period in aerobic culture enables rice plants to produce a large number of spikelets (Kato and Katsura, 2010). Katsura (2013) found genotypic differences in spikelet production efficiency (the ratio of the number of spikelets to N uptake) among chromosome segment substitution lines in the 'Sasanishiki' (a lowland-adapted japonica variety) background with 'Habataki' (a high-yielding indica variety) as the donor (Ando et al, 2008). 'Habataki' and most of the lines had more spikelets and higher yield in aerobic culture than in flooded culture.…”

Section: Physiological Attributes That Increase Rice Yield Under Aeromentioning

confidence: 89%

“…Rice plants have a potential to produce heavier singlegrain weight under aerobic conditions than under flooded conditions in Japan (Katsura and Nakaide, 2011;Katsura, 2013), while it decreases in the tropics even if the soil water potential is maintained above -30 kPa (Peng et al, 2006;Sudhir-Yadav et al, 2011). Rice grain weight is determined by individual husk size, by sink activity (often measured using the activity of enzymes involved in the conversion of sucrose to starch), and by source capacity (the capacity to supply carbohydrates to the grains).…”

Section: Physiological Attributes That Increase Rice Yield Under Aeromentioning

confidence: 99%

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Rice Adaptation to Aerobic Soils: Physiological Considerations and Implications for Agronomy

Kato

Katsura

2014

Plant Production Science

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111

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Aerobic culture is a water-saving technique for direct-seeded rice cultivation. Growing rice under continuously unsaturated soil conditions can maximize water-use efficiency and minimize both labor requirements and greenhouse-gas emissions. Under a temperate climate, aerobic culture can produce a rice yield greater than 9 t ha-1 especially in central Japan (11.4 t ha-1). Aerobic culture using large-scale center-pivot sprinklers is being established in the central United States, where yields can surpass 10 t ha-1. However, yields remain at less than 8 t ha-1 in the tropics. The high yield of Japanese aerobic culture is mainly attributed to vigorous nitrogen uptake during the reproductive stage, which allows rice plants to produce more spikelets and biomass. Fertilizer management for aerobic culture must satisfy both the nitrogen demand and control spikelet density to achieve an appropriate sink-source balance. Unfortunately, the poor development of the root system in rice limits its water uptake from unsaturated soil. Adaptive responses such as adventitious root emergence, lateral root branching, and deep root penetration would protect the plants against dehydration stress in aerobic culture. Intermediate plant height with a few large tillers rather than semi-dwarf stature with profuse tillering should be a suitable plant type for aerobic culture, and plants should show leaf expansion despite fluctuations of soil moisture. The development and identification of suitable genotypes and crop management options are underway worldwide for more resource-use efficient and productive aerobic rice culture.

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Section: Physiological Attributes That Increase Rice Yield Under Aeromentioning

confidence: 89%

Section: Physiological Attributes That Increase Rice Yield Under Aeromentioning

confidence: 99%

Rice Adaptation to Aerobic Soils: Physiological Considerations and Implications for Agronomy

Kato

Katsura

2014

Plant Production Science

Self Cite

111

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“…This difference suggests that SL414 developed a larger root system under flooded conditions, and SL417 and SL438 had larger root systems under non-flooded conditions. According to Katsura (2013), most of the CSSLs had a higher grain yield than Sasanishiki under non-flooded conditions, whereas their average was close to that of Sasanishiki under flooded conditions. The root traits of the 39 CSSLs may change depending on watering conditions.…”

Section: Discussionmentioning

confidence: 96%

Characterization of root traits for phosphorus deficiency tolerance using chromosome segment substitution lines

et al. 2022

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Phosphorus (P) acquisition, a key factor in rice productivity, is related to morphological and anatomical root traits. In this study, we examined the root traits of rice that contribute to P acquisition under low P conditions using chromosomal segment substitution lines (CSSLs) grown under nonflooded conditions. Rice plants were grown under low-and high-P conditions in a growth chamber. We tested 39 CSSLs and the parent varieties 'Sasanishiki' and 'Habataki.' Four out of the five selected genotypes from 39 CSSLs had larger root surface areas than that of Sasanishiki due to long fine root and/or coarse roots. The root surface area and shoot P uptake were significantly and positively correlated. Two of the genotypes had higher P use efficiency and shoot dry weight compared to that of Sasanishiki under low P conditions, and nodal root cross-sectional areas were larger in the two genotypes than in Sasanishiki under low P conditions. The root cortical aerenchyma in the nodal roots was well developed in all observed genotypes, which may have reduced the metabolic cost. These results suggest that the thick nodal roots with aerenchyma in contribution to the increase in root surface area are the advantage for growth under low P levels in non-flooded conditions.

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“…SMF is one of the constraints in rice production, which could cause reduction in dry matter production (Niones et al, 2015;Siopongco et al, 2008). Katsura (2013) demonstrated that the average grain yield of the Sasanishiki/ Habataki CSSLs under aerobic conditions was consistently higher than that of Sasanishiki in a two-year experiment. This implies that the Sasanishiki/Habataki CSSLs may have QTLs related to high grain yield that are inherited from Habataki.…”

Section: Significance Of Root Plasticity In Deep Root Development Wamentioning

confidence: 95%

Genotypic variations in the plasticity of nodal root penetration through the hardpan during soil moisture fluctuations among four rice varieties

Nguyen

Suralta

Kano‐Nakata

et al. 2018

Plant Production Science

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Agronomic Traits for High Productivity of Rice Grown in Aerobic Culture in Progeny of a Japonica Cultivar and a High-Yielding Indica Cultivar

Cited by 4 publications

References 27 publications

Rice Adaptation to Aerobic Soils: Physiological Considerations and Implications for Agronomy

Rice Adaptation to Aerobic Soils: Physiological Considerations and Implications for Agronomy

Characterization of root traits for phosphorus deficiency tolerance using chromosome segment substitution lines

Genotypic variations in the plasticity of nodal root penetration through the hardpan during soil moisture fluctuations among four rice varieties

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