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Effects of shading on starch pasting characteristics of indica hybrid rice (Oryza sativa L.)
- Source :
- PLoS ONE, PLoS ONE, Vol 8, Iss 7, p e68220 (2013)
- Publication Year :
- 2013
-
Abstract
- 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.
- Subjects :
- Environmental Impacts
Starch
Flour
Glycobiology
Carbohydrates
lcsh:Medicine
Cereals
Crops
Plant Science
Environment
Biochemistry
Crop
Viscosity
chemistry.chemical_compound
Agricultural Production
Amylose
Plant-Environment Interactions
lcsh:Science
Biology
Flowering Plants
Panicle
Plant Growth and Development
Multidisciplinary
Oryza sativa
Ecology
Crop yield
Plant Ecology
lcsh:R
fungi
food and beverages
Oryza
Agriculture
Plants
Crop Management
chemistry
Agronomy
Sunlight
lcsh:Q
Shading
Rice
Agronomic Ecology
Agroecology
Research Article
Subjects
Details
- ISSN :
- 19326203
- Volume :
- 8
- Issue :
- 7
- Database :
- OpenAIRE
- Journal :
- PloS one
- Accession number :
- edsair.doi.dedup.....5dad3d09c3c118b6a99981d4af82f76d