tailieunhanh - Studies on morpho-physiological traits associated with drought tolerance in local landraces of rice (Oryza sativa L.)

Productivity of rice is negatively affected by drought. Morpho-physiological traits are key for plant adaptation under water stress condition. This study was conducted with the objective to study the 49 local land races of rice including checks in field and PVC pipes for screening drought tolerant genotypes based on their yield performance and the effect of various physiological traits associated with drought tolerance were studied. Results revealed significant yield decline in almost all the genotypes studied under drought condition as compared to irrigated condition. Yield per plant was significantly and positively associated with productive tillers per plant, number of spikelets per panicle, number of filled grains per panicle, seed filling per cent and test weight. Physiological characters like chlorophyll content, relative water content, proline content, root length, root to shoot ratio and root volume showed significant positive correlation with yield under drought condition. Phenotypic path-coefficient analysis revealed that test weight in drought and number of spikelets per panicle under control showed highest direct effect on yield per plant and among physiological characters root length under drought and control condition exhibited highest direct effect on yield. However, out of 49 genotypes Sannavaalya, Manjakaime, JGL-1798, Gangadace, Madras sanna and Najarbad showed superiority in terms of grain yield and its associated traits. | Studies on morpho-physiological traits associated with drought tolerance in local landraces of rice (Oryza sativa L.)

• Nông nghiệp
• Drought stress
• Grain yield
• Physiological traits
• Relative water content
• Root length
• Proline content
• PEG induced drought stress
• PEG induced drought stress on seed germination
• Seedling characters of maize
• Seedling characters
• Wheat cultivars
• Roles of dehydrin genes
• Tolerance to drought stress
• Crop plants
• Drought avoidance
• Drought tolerance
• Tolerance mechanisms
• Post anthesis drought
• Drought susceptibility index
• Biochemical responses of soybean
• Post anthesis drought stress
• Biochemical responses
• Plant Biology
• Differentially expressed genes
• Drought adaptation model
• Drought tolerant mutant
• Transcriptomic analysis
• Zea mays
• Effect of nitrogen application
• Dry matter production
• Nitrogen application levels on growth of rice
• Growth of rice under drought stress conditions
• Drought stress conditions
• Identification and sequence analysis
• Sequence analysis of a DREB subfamily transcription
• DREB subfamily transcription factor involved
• Drought stress tolerance from rice
• Drought stress tolerance
• DNA Methylation
• DNA analysis
• Drought stress in maize
• Differential DNA methylation
• BMC Plant Biology
• Leaf senescence
• Hordeum vulgare L
• Premature leaf senescence
• Bt cotton
• Physiological responses
• Bt cotton under drought stress
• Physiological responses of Bt cotton
• Seed germination
• Maize genotypes
• Agricultural science
• Generation mean analysis in wheat
• Gene action
• Scaling test
• Physiological response
• Early growth stage
• Physiological responses of sugarcane
• Sugarcane to drought stress
• BMC Genomics
• Drought adaptive gene
• Drought responsive gene
• Pterocarya stenoptera
• Relative yield
• Indian mustard
• Drought stress response of Indian mustard
• Indian mustard (Brassica juncea L
• Triticum aestivum
• TaGAPCp promoter
• Drought resistance
• Morphological characterization
• Polyethylene glycol
• Reduced production
• Fine roots
• Gossypium hirsutum L
• Mechanisms underlying
• Soil drought remains unclear
• Pearl millet
• Pacbio sequencing
• Illumina sequencing
• Heat stress
• Glycine max
• water stress
• P5CS genes
• PAP3 genes
• BZIP genes
• Helianthus annuus
• Antioxidant enzymes
• Stress determining parameters
• Polyethylene glycol mediated
• ACC deaminase
• Abiotic stress
• Groundnut (Arachis hypogaea L
• Fluorescent pseudomonad isolates
• Characterization of efficient drought stress tolerant
• Rice GRAS
• Transcription factor
• Stress responsive genes
• Physic nut
• Gene expression profiles
• Abscisic acid
• Waxes and fatty acids
• Endoplasmic reticulum stress response
• Brassica juncea
• High temperature stress
• Differential gene expression
• Transcription factors