Influence of low light intensity on growth and productivity of rice, Oryza sativa, L.

Venkateswarlu, B.

doi:10.1007/bf00015937

Cited by 15 publications

(12 citation statements)

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“…These changes were beneficial to the accumulation of carbohydrates after regaining normal light. In general, shading reduced the tiller number [11], [12] and increased the percentage of degenerated spikelets [14], resulting in lower effective panicles and filled grains. Shading had less influence on the ultimate brown rice mass and grain yield [15], [16], [17], due to increases in the supply capacity and storage capacity in rice [7], [9], [11], [12].…”

Section: Resultsmentioning

confidence: 99%

“…In general, shading reduced the tiller number [11], [12] and increased the percentage of degenerated spikelets [14], resulting in lower effective panicles and filled grains. Shading had less influence on the ultimate brown rice mass and grain yield [15], [16], [17], due to increases in the supply capacity and storage capacity in rice [7], [9], [11], [12]. However, shading after heading seriously reduced the photosynthetic rate of the functional leaves and the quantity of photosynthetic products transported to grain [11], [12], [13]; these reductions were unfavorable for grain filling [7], [14], [17].…”

Section: Resultsmentioning

confidence: 99%

“…Also, different rice cultivars exhibited different levels of sensitivity to shading treatment [9], [11], [12], [13], [15], and these differences manifested themselves at different growth stages in the different rice varieties. At tillering-elongation stage, shading had more influence on Gangyou 188 with lower SBV and higher BDV, and Chuanxiang 9838 with higher SBV and lower BDV (Tables 5, 6).…”

Section: Resultsmentioning

confidence: 99%

“…Under the shading treatment applied, the peduncle internode length and plant height increased [7], [10]. Shading generally reduced tiller number and delayed tiller appearance and growing period [11], [12].…”

Section: Introductionmentioning

confidence: 99%

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Effects of Shading on Starch Pasting Characteristics of Indica Hybrid Rice (Oryza sativa L.)

et al. 2013

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Rice is an important staple crop throughout the world, but environmental stress like low-light conditions can negatively impact crop yield and quality. Using pot experiments and field experiments, we studied the effects of shading on starch pasting viscosity and starch content with six rice varieties for three years, using the Rapid Visco Analyser to measure starch pasting viscosity. Shading at different growth stages and in different rice varieties all affected the starch pasting characteristics of rice. The effects of shading on starch pasting viscosity at middle and later growth stages were greater than those at earlier stages. Shading enhanced breakdown but reduced hold viscosity and setback at tillering-elongation stage. Most pasting parameters changed significantly with shading after elongation stage. Furthermore, the responses of different varieties to shading differed markedly. The change scope of starch pasting viscosity in Dexiang 4103 was rather small after heading, while that in IIyou 498 and Gangyou 906 was small before heading. We observed clear tendencies in peak viscosity, breakdown, and pasting temperature of the five rice varieties with shading in 2010 and 2011. Correlation analysis indicated that the rice amylose content was negatively correlated with breakdown, but was positively correlated with setback. Based on our results, IIyou 498, Gangyou 906, and Dexiang 4103 had higher shade endurance, making these varieties most suitable for high-quality rice cultivation in low-light regions.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of Shading on Starch Pasting Characteristics of Indica Hybrid Rice (Oryza sativa L.)

et al. 2013

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“…1991). Rice is no exception to such changes, length and breadth were tagged at anthesis, which especially in eastern parts of India where light were evaluated subsequently, at a five day interval, intensity is a major factor which limits yield Three replications were taken to determine the spike- (VENKATESWARLU 1977). RAO and MURTY lets (unfilled), partially filled grains (PFG) and mature (1987) reported a low light tolerant elite rice p^ms according to VENKATESWARLU et al (1988).…”

Section: Introductionmentioning

confidence: 99%

Influence of Low Light Irradiance on Grain Filling in Rice (Oryza saliva L.) cultivars

Voleti

Singh

1996

J Agronomy Crop Science

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Time course of grain filling pattern in two rice (Oryza sativa L.) cultivars, grown under normal and low light intensities, was studied. The number of spikelets, partially filled grains and high density grains were monitored at a 5 day interval during grain filling period from uniform panicles tagged at anthesis. The low light tolerant cultivar Swarnaprabha had more high density grains and less partially filled grains throughout the grain filling period and at harvest compared to cultivar Ratna under both normal and low light intensities. Further, the opening of spikelets in two flushes in Swarnaprabha seemed to result in a more efficient resource allocation and hence better yield as compared to Ratna, in which the opening of spikelets was in a single flush on day 10.

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Biochemical changes in low-irradiance tolerant and susceptible rice cultivars

Chowdhury¹,

Thangaraj²,

Jayapragasam³

1994

Biol. plant.

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In the topmost leaves of low-irradiance (LI) tolerant CO 43 and LI susceptible IR 20 rice cultivars, the contents of chlorophyll (chl) a and b and carotenoids and the Hill reaction activity increased under LI. The increase was greater in cv. CO 43 than that in cv. IR 20, and in Chl b than in Chl a. The contents of soluble proteins and reducing sugars and nitrate reductase activity of the leaves decreased while the content of non-reducing sugars increased due to shading. The decrease in reducing sugars was greater in cv. CO 43 than in cv. IR 20. On the other hand, the decrease in soluble proteins and nitrate reductase was much less in cv. CO 43 as compared with cv. IR 20.

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Influence of low light intensity on growth and productivity of rice, Oryza sativa, L.

Cited by 15 publications

References 0 publications

Effects of Shading on Starch Pasting Characteristics of Indica Hybrid Rice (Oryza sativa L.)

Effects of Shading on Starch Pasting Characteristics of Indica Hybrid Rice (Oryza sativa L.)

Influence of Low Light Irradiance on Grain Filling in Rice (Oryza saliva L.) cultivars

Biochemical changes in low-irradiance tolerant and susceptible rice cultivars

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