Production Expansion and Comparative Advantage of Upland Rice Production and its Effect on the Local Farming Systems: The Case of Guraferda District, Southwest Ethiopia

Helamo, Ejigu Mulatu; Tassew, Addis Alemayehu

doi:10.4172/2329-8863.1000395

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“…However, in both of the districts rice productivity is very low mainly due to lack of improved varieties, weeds and other production challenges. Thereby, the productivity of the crops declined to 28.8 qha-1 in 2014 from 32 qha-1 in 2012 at Guraferda [6]. In the nation, from different regional and national research centers greater than 15 improved upland rice varieties were registered and released for production.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Upland Rice (Oryza Sativa L.) and Variability Study for Yield and Related Traits in South West Ethiopia

Tiruneh¹,

Husen²,

Kampe³

2021

JRS

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This study aimed at assessing genetic variability and to evaluate the performance of 13 improved upland rice varieties for yield and its components based on morphological traits. The field experiment was conducted using randomized block design at Guraferda and Gimbo districts in 2019 main cropping season. The analysis of variance (ANOVA) over the two locations revealed significant differences (p≤ 0.05) among varieties for days to 50% heading, days to 85% maturity, panicle length, thousand grain weight and grain yield. Similarly, the ANOVA for variety by location interactions depicted significant differences among the tested varieties for days to 50% heading, days to 85% maturity and thousand grain weight. High heritability was obtained from days to heading (88.5%), panicle length (85.0%) and grain yield (85.2%), which indicates these traits can be easily improved through selection. High to medium broad sense heritability and genetic advance as percentage of the mean for days to heading, thousand grain weight and grain yield indicates good opportunity for improvement through selection using their phenotypic performance. This is mainly due to the high role of additive gene action for the expression of such traits. This study confirmed the presence of variability among varieties for most of the studied traits, which will create an opportunity for breeders to improve rice yield and other attributes.

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Section: Introductionmentioning

confidence: 99%