Abstract
Three hundred twenty germplasm lines of the major Ethiopian cereal, tef, [ Eragrostis tef (Zucc.) Trotter], were evaluated for 20 morphological, phenological and agronomic characters in two-replicated randomized complete blocks at Debre Zeit and Melkassa Agricultural Research Centers in Ethiopia during the 1995 main season. The objectives were to assess the diversity of the lines, and to estimate the broad sense heritability (H) and genetic advance (GA) of the various characters. The mean squares of genotypes were highly significant (p ≤ 0.001) for all the traits. The phenotypic and genotypic coefficients of variation ranged in that order from about 6–40% and 3–23% for days to maturity and grain yield/plant, and days to maturity and number of spikelets/main shoot panicle, respectively. The cluster analysis grouped the genotypes into 14 major complexes consisting of one to 183 lines. Of the 19 principal components involved in explaining the entire variation among the genotypes the first five which had eigenvalues of more than one explained about 73.8%. The first principal component which accounted for about 34% of the total variance was due chiefly to plant height, culm and panicle length, diameters of the two basal culm internodes, main shoot panicle mass and grain yield, number of main shoot panicle branches and spikelets, and days to panicle emergence and maturity. Estimates of H varied from about 22% for length of the lowest main shoot stem internode to 74% for number of main shoot panicle branches. Values of GA (expected from selection of the superior 5% of the lines and expressed relative to the means) ranged from about 3% for days to maturity to 36% for number of spikelets/main shoot panicle. Overall, the study indicated the existence of trait diversity in tef germplasm and this can be exploited in the genetic improvement of the crop through hybridization and selection.
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References
Allard, R.W., 1960. Principles of Plant Breeding. Wiley, New York.
Assefa, K., 1991. Effects of synthetic plant growth regulators on lodging, and otheragronomic and morphological characters of tef [Eragrostis tef (Zucc.) Trotter]. M. Sc. Thesis. Alemaya University of Agriculture, Dire Dawa, Ethiopia.
Bechere, E., G. Belay, D. Mitiku and A. Merker, 1996. Phenotypic diversity of tetraploid wheat landraces from northern and northcentral regions of Ethiopia. Hereditas 124: 165–172.
Bekele, E., 1986. The relationship between wild and cultivated species of Eragrostis (Poaceae) using flavonoid patterns, caryopses and pollen morphology as markers. SINET. Ethiop J Sci 9 (Suppl): 189–213.
Bekele, E., 1995. Essential and nonessential amino acids in a free state and in the major protein fractions of tef seeds. SINET: Ethiop J Sci 18(1): 79–99.
Burton, G.W., 1952. Quantitative inheritance in grasses. Proc Sixth International Grassland Congress, Vol. I. 277–283.
Central Statistical Authority, 1996. Agricultural sample survey 1995/96 (1988 E.C.) on area and production of major crops, private peasant holdings, Meher season, Vol. I. Statistical Bulletin 152, Addis Ababa, Ethiopia.
Costanza, S.H., J.M. DeWet & J.R. Harlan, 1979. Literature review and numerical taxonomy of Eragrostis tef (t'ef). Econ Bot 33(4): 413–424.
Demissie, A. & A. Björnstad, 1996. Phenotypic diversity of Ethiopian barleys in relation to geographical regions, altitudnal range, and agro-ecological zones: as an aid to germplasm collection and conservation strategy. Hereditas 124: 17–29.
Ebba, T., 1969. Tef (Eragrostis tef). The cultivation, usage and some of its known diseases and insect pests. Part I. Expt. Sta. Bull. No. 60, HSIU, College of Agriculture, Dire Dawa, Ethiopia.
Ebba, T., 1975. Tef (Eragrostis tef) Cultivars: Morphology and classification. Part II. Expt. Sta. Bull. 66, Addis Ababa University, College of Agriculture, Dire Dawa, Ethiopia.
Ethiopian Nutrition Survey, 1959. A Report by the Inter-Departmental Committee on Nutrition for National Defense. Sept. 1959, Washington D.C.
Fehr, W.R., 1987. Principles of Cultivar Development, Vol I. McGraw-Hill Inc., New York.
Jain, R.P. & S. Chandra, 1968. Studies on variability of some important quantitative characters in barley. Madras Agric J 55: 531–534.
Johnson, H.W., H.F. Robinson & R.E. Comstock, 1955. Estimates of genetic and environmental variability in soybeans. Agro J 47(7): 314–318.
Ketema, S., 1983. Studies on lodging, floral biology and breeding techniques in tef [Eragrostis tef (Zucc.) Trotter]. Ph.D. Thesis. University of London, U.K.
Ketema, S., 1993a. Phenotypic variations in tef (Eragrostis tef) germplasm — Morphological and agronomic traits. A catalog. Technical Manual No. 6, Institute of Agricultural Research, Addis Ababa. Ethiopia.
Ketema, S., 1993b. Tef (Eragrostis tef): Breeding, genetic resources, agronomy, utilization and role in Ethiopian agriculture. Institute of Agricultural Research, Addis Ababa, Ethiopia.
Kumar. A., S.C. Misra, Y.P. Singh & B.P.S. Chauhan, 1985. Variability and correlation studies in triticale. J Maharashtra Agri Univ 10: 273–275.
Mengesha, M.H., R.C. Pickett & R.L. Davis, 1965. Genetic variability and inter-relationships of characters in tef [Eragrostis tef (Zucc.) Trotter]. Crop Sci 5: 155–157.
Negassa, M., 1985. Patterns of phenotypic diversity in an Ethiopian barley collection, and the Arssi-Bale Highland as a center of origin of barley. Euphytica 102: 139–150.
Pecetti, L., P. Annicchiarico & A. B. Damania, 1992. Biodiversity in germplasm collection of durum wheat. Euphytica 60: 229–238.
Quendeba, B., G. Ejeta, W.W. Hanna & A.K. Kumar, 1995. Diversity among African pearl millet landrace populations. Crop Sci 35: 919–924.
Rouk, H.F. & H. Mengesha, 1963. An introduction to tef (Eragrostis abyssinica Schrad.). A nutritious cereal grain of Ethiopia. Agric. Expt. Sta. Bull. No. 26, College of Agriculture, Dire Dawa, Ethiopia.
Sharma, S.K., K.B. Trehan & P.D. Bhargava, 1966. Genotypic and phenotypic variability in barley under rainfed conditions. Ind J Genet Pl Breed 26: 366–369.
Simane, B., 1990. Agroclimatic analysis to assess crop production potentials in Ethiopia. Agronomy Section, Department of Plant Sciences, Alemaya University of Agriculture, Ethiopia. ICRISAT (International Crop Research Institute for Semi Arid Tropics), Patancheru, A.P. 502 324, India.
Sinha, T.S. & R.K. Bhattacharyya, 1980. Note on genetic variability in sunderban rice varieties under saline soil. Ind J Agric Sci 50: 719–721.
Swarup, V. & D.S. Chaugale, 1962. Studies on genetic variability in sorghum. I. Phenotypic variation and its heritable component in some important quantitative characters contributing towards yield. Ind J Genet Pl Breed 22: 31–36.
Taddesse, D., 1993. Study on genetic variation of landraces of tef [Eragrostis tef (Zucc.) Trotter] in Ethiopia. Gen Res and Crop Evolution 40: 101–104.
Tefera, H., M. Ayele & K. Assefa, 1995. Improved varieties of tef (Eragrostis tef) in Ethiopia. Releases of 1970–1995. Research Bull. No.1, Debre Zeit Agricultural Research Center, Alemaya University of Agriculture, Debre Zeit, Ethiopia.
Tefera H., S. Ketema & T. Tessema, 1990. Variability, heritability and genetic advance in tef (Eragrostis tef (Zucc.) Trotter) cultivars. Trop Agric (Trindad) 67: 317–320.
Vavilov, N.I., 1951. The Origin, Variation Immunity and Breeding of Cultivated Plants. Translated from the Russian by K. Starrchester, Ronald Press, New York, pp 37–38.
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Assefa, K., Ketema, S., Tefera, H. et al. Diversity among germplasm lines of the Ethiopian cereal tef [ Eragrostis tef (Zucc.) Trotter]. Euphytica 106, 87–97 (1999). https://doi.org/10.1023/A:1003582431039
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DOI: https://doi.org/10.1023/A:1003582431039