Relation between Temperature of Irrigation Water and Growth of Rice Plant

Kondō, Mantarō; Okamura, Tamotsu

doi:10.1626/jcs.2.90

Cited by 1 publication

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“…Many authors reported that plant height of rice increased with the rise of temperature within the range of 30−35ºC (Kondo and Okamura, 1931;Osada et al, 1973). The same was the case in this study (Fig.…”

Section: Growth and Dry-matter Productionsupporting

confidence: 89%

“…4), which was consistent with many previous reports (Koyama et al, 1983;Ziska et al, 1997;Fukui, 2000;Newman et al, 2001). Kondo and Okamura (1931) suggested that the optimum temperature for dry-matter production was lower than or equal to that for elongation of plant height. Therefore, the temperature in TG2 and TG3 was considered to be within the optimum range for dry-matter production.…”

Section: Growth and Dry-matter Productionmentioning

confidence: 99%

See 1 more Smart Citation

Effects of High Temperature on Growth, Yield and Dry-Matter Production of Rice Grown in the Paddy Field

Oh-e

Saitoh

Kuroda

2007

Plant Production Science

151

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: The effect of high temperatures on growth, yield and dry-matter production of rice growing in the paddy field was examined during the whole growth period in a temperature gradient chamber (TGC) from 2002 to 2006. Experimental plots, TG1 (control), TG2, TG3 and TG4, were arranged along the temperature gradient (from low to high temperature) in TGC. The mean and maximum air-temperatures in TG4 were 2.0 −3.6ºC and 4.0−7.0ºC higher, respectively, than those in TG1. The plant height was taller and the maximum tillering stage was earlier in TG2, TG3 and TG4 than in TG1. Plant dry weight at maturity in TG2 and TG3 was 12.8−16.4% heavier than that in TG1. In TG4, the increase in the panicle dry weight during the ripening period was smallest and plant dry weight at maturity was 11−16% heavier than that in TG1. The increase in plant drymatter during the ripening period was smallest in TG4. The decrease in the dry weight of stem and leaf during the ripening period, which represents the amount of assimilate translocation to the panicle, was also larger in TG2-4 than in TG1. The increase in the dry weight of stem in TG2-4 at maturity was also larger than that in TG1. The photosynthetic rate in TG2-4 was up to 35.6% lower than that in TG1 because of the acceleration of leaf senescence. Brown rice yield in TG4 was 6.6−39.1% lower than that in TG1. This yield decline was due to the decrease in the percentage of ripened grains and increase in the percentage of sterile spikelets. The relation between brown rice yield and mean air-temperature during 20 days after heading showed that the brown rice yield declined when mean air-temperature exceeded 28ºC.

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Section: Growth and Dry-matter Productionsupporting

confidence: 89%