TAILIEUCHUNG - Evaluation of soybean germplasm lines for agro-morphological traits and terminal drought tolerance

The occurrence of drought stress at seed filling stage is known to cause severe yield reduction in soybean especially where the crop is grown in rainfed conditions. Screening of large germplasm lines under natural drought conditions is extremely difficult to execute due to unusual rains. In the present study, about 328 germplasm lines are screened for terminal drought tolerance by spraying of potassium iodide (KI) at R5 stage and the tolerant lines were again retested under similar conditions in the subsequent year. The lines were classified as tolerant, moderately tolerant and susceptible based on the relative reduction in seed yield and 100-seed weight of treated over control conditions. The Shannon diversity index (SDI) indicated that genotypes were highly diverse for seed colour (HꞋ= ) and hilum colour (HꞋ= ). The PCA biplot analysis revealed that lines were more compactly and closely placed under controlled conditions as against treated. Four genotypes (TGX1835-3E, VSL-69, EC-105780 and PK-1243) were identified as relatively drought tolerant lines as they showed less reduction for number of pods per plant, seed yield and hundred seed weight under KI induced drought conditions. These lines were again validated next year and were found to be potential source for the development of drought tolerant varieties for the sustainable soybean production. | Evaluation of soybean germplasm lines for agro-morphological traits and terminal drought tolerance

• Nông nghiệp
• Germplasm accessions
• Potassium iodide
• Drought tolerance
• Terminal drought tolerance
• Agro morphological traits
• Soybean germplasm lines
• Molecular characterization
• SSR markers
• G hirsutum using SSR markers
• Molecular characterization of germplasm accessions
• Green gram germplasm
• PCV and Heritability
• Green gram [Vigna radiata (L
• )]
• Drought tolerance in green gram
• Evaluation of germplasm accessions
• Genetic variability
• Heritability in selected mulberry
• Morus spp
• Future breeding programmes
• Shannon diversity index
• Diversity based on agro morphological
• Agro morphological
• Quality characterization
• Germplasm accessions of rice
• Paspalum scrobiculatum L
• Genetic divergence
• D 2 analysis
• Nutritional quality traits
• Genetic diversity studies in kodo millet
• Germplasm accessions based
• Fatty acid composition
• Gx E interaction
• Oil content
• Response to different seasons
• Genetic variability for seed yield
• Alfalfa germplasm
• M
• Sativa falcata complex
• Prior information
• sativa subsp
• caerulea
• Cultivated alfalfa
• Cluster analysis
• Rice germplasm
• Non hierarchical euclidean cluster analysis
• Rice (Oryza sativa L )
• Immunotherapies
• Vaccines
• Envelope Specific
• Antibody and Vaccine
• Vaccine Efficacy
• Cytokines and Chemokines
• Anthracnose resistance
• French bean
• Germplasm screening
• SCAR markers
• French bean (phaseolus vulgaris)
• DUS Descriptors
• Foxtail millet
• Qualitative traits
• Quantitative traits
• Morphological characterization
• Black pepper
• Phytophthora capsic
• Piper nigrum
• Piper nigrum L
• BMC Plant Biology
• Sampling Genebanks accessions
• Genetic diversity representativeness
• Sample size
• Zea mays L
• Inter relationship
• Path analysis
• Yield in cowpea
• Clusters per plant cowpea
• Green gram
• Physiological traits
• Principal component analysis
• Biplot analysis
• Plant Biology
• Bud sports
• Genetic structure
• Malus ssp
• Apple germplasm
• Possibly duplicates
• Vietnamese local black glutinous rice
• Bacterial leaf blight
• Xanthomonas oryzae pv
• Oryzae
• Effective resistant genes
• Black glutinous rice accessions
• BMC Genomics
• Cucumis melo
• Linkage disequilibrium
• Quantitiative Trait Loci
• Cultivated accessions