Correlation and Path Analysis of Upland Rice on Yield Phenotypic Components under the Undulation Slope Area in Na Khu District, Kalasin Province
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Abstract
Twenty-two upland rice lines and 2 control varieties were evaluated at Na Khu district, Kalasin Province. The aimed of study was determined to select the rice with high yield and yield components and correlation between character, the direct and indirect effects related on yield. The experimental design was RCBD with 3 replications. The results found that tillering ranged from 6.00-20.33 tillers per hill. The plant height was 56.22-125.91 cm. The panicles per hill was 3.33-116.67 panicles. The panicle length was between 20.39-30.00 cm. The seeds per panicle ranged from 38.67-148.67 seeds. The seed width was during 2.04-3.42 mm. The seed length was during 8.42-11.43 mm. 100 seed weight was 1.90-3.18 g. The seed weight per hill was 2.90-35.00 g. The total yield ranged from 64.87-676.33 kg./rai. Rice153, Rice 207 and Rice 193 had a high yield viz. 676.33, 464.10 and 367.07 kg./rai. The panicles per plant was positively correlated with seed weight per plant (r=+0.64) and grand yield (r=+0.64). The panicle length was positively correlated with the seeds per panicle (r=+0.68), seed weight per plant (r=+0.74) and grand yield (r=+0.72). The seed weight per plant was positively correlated with grand yield (r=+0.99). The path analysis indidated direct positively effects of seed weight per plant, plant height, seed width, seed length and 100 seed weight per plant were 1.0054 0.0258 0.0273 0.0251 and 0.0037 effect to grand yield, respectively.
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