tailieunhanh - Evaluation of selection indices in screening durum wheat genotypes combining drought tolerance and high yield potential

In order to investigate the relationships among the drought tolerance/resistance indices an experiment was conducted in alpha lattice design with two replications under two moisture regimes during the crop season 2015-16. Thirteen indices, which were most frequently used in plant breeding, were compared based on grain yield of 20 durum wheat genotypes. Highly significant differences for yield (Yp and Ys) and all drought tolerance indices except TOL were observed which indicated that genotypes were differing for genes controlling yield and drought tolerance indices. The mean of grain yield under non stress condition (Yp) values ranged between (BIJAGA RED) to (g/plant) (MP 1279), whereas under stress condition (Ys) yield range was found between (N 59) to g/plant (MP 1279). It is remarkable that the genotypes MP 1279 and DWR 185 and CG 1010 had high performances in both stressed and non-stressed conditions for grain yield. The grain yield reduction was ranged between to per cent in drought plots. The average reduction in grain yield due to drought stress was 58 per cent. This explains the massive reduction in yield under severe drought stress for majority of genotypes. Therefore, moderate drought stress environments are more preferable as compared to severe drought stress to identify drought tolerant lines. STI-related indices (K1STI and K2STI) were found convenient parameters to select high-yielding genotypes in both stress and non-stress conditions. The MP, GMP and YI indices, which were highly positively and significantly correlated to the grain yields in both favorable and drought stress environments, were introduced as the best indices. | Evaluation of selection indices in screening durum wheat genotypes combining drought tolerance and high yield potential

• Nông nghiệp
• Stress intensity
• Grain yield
• Moisture stress indices
• Durum wheat
• Screening durum wheat genotypes combining
• Tolerance and high yield potential
• Round robin analyses
• Stress intensity factors of inner surface cracks
• Welded stainless steel pipes
• Stress intensity factors
• Austenitic stainless steels
• Combination of stress components
• Nuclear engineering and technology
• Theoretical models of threshold stress intensity factor
• Critical hydride length
• Delayed hydride cracking considering thermal stresses
• Delayed hydride cracking
• Threshold stress intensity factor
• The threshold stress intensity factor
• Delayed hydride cracking in light water reactor fuel cladding
• Light water reactor fuel cladding
• Bi material joint
• Bi material notch
• Brazilian disc specimen
• Stress intensity factor
• Three dimensional finite element
• Mixed mode I/II stress intensity factors
• Disc type specimens
• Center cracked circular disc
• Semi circular bend specimen
• Finite element analysis
• Mode I fracture toughness of rock
• Straight edge cracks
• Slant edge crack
• Crack initiation angle
• Two dimensional finite element
• Mixed mode I/II
• BMC Cancer
• Immune function
• High intensity
• Cardiovascular disease
• Heart rate variability
• Stress systems
• HPA axis
• BMC Musculoskeletal Disorders
• Low intensity training
• Muscle thickness
• Hot pack
• One repetition maximum
• Heat tolerance
• Frequency and intensity
• Assessment of temperature stress
• Temperature stress on rice
• Grain filling stage
• Tạp chí khoa học
• Cracked structures
• Extended radial point interpolation method
• Interpolation method
• CO2 response curve
• Light response curve
• Nitrate stress
• Cucumber seedlings
• Photosynthetic light
• Cucumis sativus L
• Brittle fracture mechanics
• Mixed mode loading condition
• Finite element method
• Fracture test specimen
• Orthotropic composite materials
• Orthotropic media
• 2D orthotropic materials models
• Functionally graded materials
• Radial point interpolation method
• RPIM shape function
• Vietnam Journal of Mechanics
• Fatigue performance of tubular X joints
• Constant amplitude brace in plane bending actions
• The stress intensity factors
• The crack front profile
• A novel numerical approach
• Fracture analysis in orthotropic media
• Consecutive interpolation procedure
• Two dimensional orthotropic domain
• Stress intensity factor
• Corner point singularities
• Linear elastic analysis
• Isotropic cracked bodies
• Mode I/II SIF
• Quasi brittle materials
• Cracked semi circular bend specimen
• In house finite element code
• Mode I/II stress intensity factor
• Sharp V notch
• In plane shear loading
• Notch stress intensity factor
• Strain energy density
• Brittle fracture assessment
• Dynamic stress intensity factors
• Consecutive interpolation procedure XFEM
• Composite materials FEM
• Cracked FGM composite plate
• Linear elastic fracture mechanics
• Drought stress
• Glycine max L
• Salicylic acid
• Chlorophyll a
• Photosynthesis intensity