Barley research and development in ethiopia

Barley Research and Development in Ethiopia

The fecundity of D. flavibasis was studied on a susceptible barley variety,'Holker', and on two relatively resistant varieties,'Dinsho'and 'Harbu'(SARC, 2004). Barley seedlings with deadhearts as a result of D. flavibasis infestation were collected from the field and kept in ...

Australasian Plant Pathology, 2021

In this study, we evaluated a collection of 585 barley landraces along with 10 checks at Sinana Agricultural Research Center (SARC) and Bale-Goba research sites in 2018/19 and 2019/20 cropping seasons for resistance to net blotch (Pyrenophora teres F. teres (Ptt)). The experiments were laid out in an augmented complete block design. Data on agronomic performance and disease response were recorded. Analysis of variance showed highly significant variations between and within the landraces and cultivars in net blotch percent severity index (PSI), area under the disease progress curve (AUDPC), apparent infection rate, days to heading, plant height, number of fertile tillers per plant, seeds per spike, spike length and thousand seed weight. The overall mean net blotch epidemics varied from area under disease progress curve (AUDPC) of 86 to 1835. The disease was as high as AUDPC of 1378 on the susceptible check ‘Abdanie’. Similarly, the variations between and within barley landraces in terms of regions of origin, altitude classes and ear-types were significant. Out of the 585 barley landraces evaluated, 198 (33.85%) had significantly lower disease than the susceptible check, of which 12 (2.05%) and 186 (31.79%) landraces, respectively showed resistant (R) and moderately resistant (MR) infection types. The frequency of resistant landraces was more in third (2000-2500 m) and fourth (>2500 m) altitude classes and six-rowed and irregular barley types than in lower altitude areas and two-rowed ear-types. Furthermore, the correlation analysis among PSI and some yield components revealed adverse effect of the disease on grain yield of barley.

2005

Genetic Resources and …, 1997

Journal of Plant breeding and Crop Science, 2010

Variance analysis and graphical biplots were used to understand the nature of genotype × environment interaction (G × E) in a grain yield data set obtained from 39 barley (Hordeum vulgare L.) genotypes grown in 18 environments (a combination of three sowing dates, two crop protection treatments and three years) at Holetta, central highlands of Ethiopia. Genotype × year interaction was much more important than genotype × management interaction. Season-end drought was the environmental variable and time to maturity was the genotypic variable responsible for the high G × year interaction variance. An elite breeding line gave the highest mean yield and was the best under low but not under high season-end drought stress. Sasa, an early maturing landrace, was the best in a year of high season-end drought. Biplots enabled visual identification of compromise genotypes such as 3304 - 11 and 3381 - 04 that yielded reasonably well under both low and high season-end drought conditions. Selectio...