Genetic criterion for selection of highly productive medium grain rice (Oryza sativa) lines
Riaz, M. (Rice Research Inst., Kala Shah Kaku (Pakistan)) | Akhter, M. (Rice Research Inst., Kala Shah Kaku (Pakistan)) | Khan, R.A.R. (Rice Research Inst., Kala Shah Kaku (Pakistan))
A study was conducted at Rice Research Institute, Kala Shah Kaku, Pakistan during the year 2010 to find out correlation and level of significance for different rice (Oryza sativa) lines for yield and yield components. Six genotypes of medium grain rice (PK 8245-4, PK 8328-4-1-1, PK 3445-3-2, Aerobic 1, RSP-3 and RSP-4) were collected from PARC, Islamabad while KSK-133 and IR-5 were used as check. All the genotypes were planted in RCBD at Rice Research Institute, Kala Shah Kaku, during 2010. At maturity data were recorded for days to 50% flowering, maturity days, plant height, productive tillers per plant and panicle length. Highly significant positive correlation was observed between plant height and grains per panicle. At the same time significant but negative correlation was observed among plant height and productive tillers per plant, days to 50% flowering and 1000 grain weight, plant height and 1000 grain weight, panicle length and paddy yield. These results help us to devise the effective selection criterion for high yielding medium grain rice lines. Among the lines under study, PK 3445-3-2 proved to be having all three characters and thus will be selection of choice for future experiments.
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