Genetic Variability and Association Studies in F2 Population of Indica – Japonica Crosses of Rice
Kundan Bedwa, Neelam Bhardwaj * and Surbhi Patyal
Department of Genetics and Plant Breeding, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176062
*Corresponding author Email: neenabhardwaj@gmail.com
Volume 18-(2), 2025 ; https://doi.org/10.58297/CHES6229 Click here for Pdf
Abstract
The present experiment was conducted to evaluate genetic variability among 12 indica-japonica crosses and their parents during kharif, 2023. Analysis of the variance revealed presence of significant variability among the genotypes for all the characters studied in F2 population. High phenotypic coefficient of variance (PCV) and genotypic coefficient of variance (GCV) were observed for spikelets per panicle (19.75%, 17.76%) and grain yield per plant (18.89%, 16.28%) suggesting presence of high variability among the lines that can be exploited for improvement of these traits through selection in advanced generations. High heritability coupled with high genetic advance were observed for spikelets per panicle (80.93%, 32.93%) and 1000 grain weight (80.34%, 21.10%). Based upon the correlation studies grain yield per plant was positively and significantly correlated with effective tillers per plant, panicle length, spikelets per panicle and 1000 grain weight, both at phenotypic and genotypic level. Path coefficient analysis showed that high positive direct effects were exhibited by effective tillers per plant and spikelets per panicle.
→Next
- Variability and Interrelationships for Yield and Yield Related Traits in Land Races of Rice (Oryza sativa
L.) - Diversity Analysis of Red Rice (Oryza sativa L.) Genotypes for Yield and Grain Zinc, Iron and Protein
Content - Studies on Genetic Variability, Heritability and Genetic Advance for Quantitative Traits in Red Rice
(Oryza sativa L.) Mutant Lines. - Dithizone Screening Protocol to Select Promising Rice with High Grain Zinc Content
- Comparison of Different Establishment Methods of Rice for above Ground Dry Matter Accumulation
as Influenced by Microbial Consortia and Zinc Fertilization - Effect of Brown Manuring and Herbicide Application on Yield Attributes and Soil Status of Aerobic Rice
under Varying Planting Geometry - Integrated Evaluation of ‘Geoxol.com’ and Organic Manures on Soil Health and Rice Productivity
Under Irrigated Conditions - Histopathological Studies of Fusarium moniliforme in Basmati Rice Varieties
- Response of Seedling Root Dip Treatments against Yellow Stem Borer, Scirpophaga incertulas (Walker)
Infesting Rice Crop - Evaluation of Insecticide Botanical Modules against Scirpophaga incertulas and Cnaphalocrocis medinalis
in Rice - Possible Detection of the Rice Gall Midge (Orseolia oryzae) Resistance Genes in Rice Genotypes Using
Relevant Markers - JGL 35085 (IET 29142) – A Short Duration and High Yielding Variety Suitable for Bihar and West
Bengal of Zone III - KAU Punya (MO 25): A High Yielding Red Kernelled Rice Variety for Kuttanad
- KAU Aadhya (MO 24): A High Yielding White Kernelled Rice Variety for Kerala
- BPT Rice 2841- A Lysine Rich Black Rice Variety Suitable for Raw Rice