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Genetic analysis for drought resistance of rice at reproductiove stage in field with different types of soil
- Source :
- Yue, B, Xiong, L, Xue, W, Xing, Y, Luo, L & Xu, C 2005, ' Genetic analysis for drought resistance of rice at reproductiove stage in field with different types of soil ', Theoretical and Applied Genetics, vol. 111, no. 6, pp. 1127-1136 . https://doi.org/10.1007/s00122-005-0040-1
- Publication Year :
- 2005
-
Abstract
- Drought resistance of rice is a complex trait and is mainly determined by mechanisms of drought avoidance and drought tolerance. The present study was conducted to characterize the genetic basis of drought resistance at reproductive stage in field by analyzing the QTLs for drought response index (DRI, normalized by potential yield and flowering time), relative yield, relative spikelet fertility, and four traits of plant water status and their relationships with root traits using a recombinant inbred population derived from a cross between an indica rice and upland rice. A total of 39 QTLs for these traits were detected with individual QTL explained 5.1-32.1% of phenotypic variation. Only two QTLs for plant water status were commonly detected in two environments, suggesting different mechanisms might exist in two types of soil conditions. DRI has no correlation with potential yield and flowering time under control, suggesting that it can be used as a good drought resistance index in field conditions. The co-location of QTLs for canopy temperature and delaying in flowering time suggested a usefulness of these two traits as indexes in drought resistance screening. Correlation and QTL congruence between root traits and putative drought tolerance traits revealed that drought avoidance (via thick and deep root traits) was the main genetic basis of drought resistance in sandy soil condition, while drought tolerance may play more role in the genetic basis of drought resistance in paddy soil condition. Therefore, both drought mechanisms and soil textures must be considered in the improvement of drought resistance at reproductive stage in rice.
- Subjects :
- Canopy
Soil texture
Drought tolerance
Quantitative Trait Loci
Flowers
Minisatellite Repeats
Upland rice
Quantitative trait locus
Biology
Plant Roots
Disasters
Soil
parasitic diseases
Genetics
Poaceae
Crosses, Genetic
Oryza sativa
Reproduction
fungi
food and beverages
Chromosome Mapping
Oryza
General Medicine
Soil type
Adaptation, Physiological
Plant Leaves
Phenotype
Agronomy
Agronomy and Crop Science
Biotechnology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Yue, B, Xiong, L, Xue, W, Xing, Y, Luo, L & Xu, C 2005, ' Genetic analysis for drought resistance of rice at reproductiove stage in field with different types of soil ', Theoretical and Applied Genetics, vol. 111, no. 6, pp. 1127-1136 . https://doi.org/10.1007/s00122-005-0040-1
- Accession number :
- edsair.doi.dedup.....de45923ae4c09446596abe2a119a6c73