Genetic Variability for Yield Components, Iron and Zinc contents in Rice (Oryza sativa L.) Genotypes
Tukaram J Bhor¹*, Rohit K Jambhulkar² and Narendra V Kashid¹
1 Agricultural Research Station, Vadgaon Maval, Pune-412106, Maharashtra
2 College of Agriculture, Pune-411005, Maharashtra
*Corresponding author E-mail: tjbhor1969@gmail.com
Volume 17-(2), 2024 ; https://doi.org/10.58297/OLXU5090 Click here for Pdf
Received: 15th July 2024; Accepted: 12th October, 2024
Abstract
The experiment was carried out for 11 characters in 41 rice genotypes during kharif 2022 at Agricultural Research Station, Vadgaon Maval, Pune. The highest value of GCV (32.111) and PCV (32.618) observed for grain yield per plant and followed by grain iron (Fe) content, GCV (31.137) and PCV (32.021), grain zinc (Zn) content GCV (27.039) and PCV (28.147), fertile spikelets per panicle GCV (20.462) and PCV (21.232), 1000 grain weight GCV (19.104) and PCV (20.094). The grain yield per plant was observed as the highest broad sense heritability (96.90%) followed by days to 50% flowering (95.60%) and grain iron (Fe) content (94.60%). The highest genetic advance as per cent of mean was observed for the traits grain yield per plant (65.121), grain iron content (62.373), grain zinc content (53.509) and fertile spikelets per panicle (40.625). The significant positive correlation was observed among grain yield per plant and days to 50% flowering (0.3171), panicle length (0.2974), fertile spikelets per panicle (0.5101), total spikelets per panicle (0.4519), spikelet fertility (0.4570), test weight (0.4378) and productive tillers per plant (0.5732). High heritability with high genetic advance observed for the trait grain yield per plant, grain iron (Fe) content, grain zinc (Zn) content, fertile spikelets per panicle and total spikelets per panicle indicated additive gene actions. The total spikelet per panicle (2.9940) was observed that had highest direct positive effect on grain yield per plant and followed by spikelet fertility % (0.7118), test weight (0.6805), productive tillers per plant (0.5068) and panicle length (0.1516).
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