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ISSN: 2360-7874 |
Academic Research Journal of
Agricultural Science and Research |
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Vol. 8(4), pp. 263-276, May 2020 Research Genetic Diversity of released Tef (Eragrostis tef (Zucc.) Trotter) Varieties for Lodging Resistance.
Molalign Assefa
Southern Agriculture Research Institute, Worabe Center, P.O.Box. 021, Worabe, Ethiopia. E-mail: molaassefa@gmail.com
Accepted 30 May 2020
Genetic improvement of native crops is a new and promising strategy to combat hunger in the developing world. Tef is the major staple food crop for approximately 50 million people in Ethiopia. As an indigenous cereal, it is well adapted to diverse climatic and soil conditions; however, its productivity is extremely low mainly due to susceptibility to lodging. The presence of considerable variations among tef genotypes has been observed indicating the potential of improving the crop through selection of genotypes that combine the traits of interest. The objective of this review: (1) the variation of released tef varieties/germplasm materials for key lodging resistance traits, (2) to assess the impact of lodging on productivity of tef. This review presented that there is positive association between lodging index and grain filling period indicated that the shorter the time to grain filling, might help to reduce lodging of tef as well as the longer grain filling period giving higher grain and causes higher lodging. Therefore, selection of genotypes with short days to grain filling and maximum number of productive tillers reduce the lodging index and increase lodging index, respectively. This shows that lodging index had negative correlation with days to head, days to maturity, plant height and culm length. Tef genotypes that exhibited short days to heading and grain filling period need to be considered as potential genetic materials for improving tef production through selection. A multi-faceted approach involving different disciplines has been suggested to combat the problem of lodging in tef.
Keywords: Eragrostis tef, diversity, genotype, lodging, tef, variability
How to cite this article (APA Style): Molalign A (2020). Review on Genetic Diversity of released Tef (Eragrostis tef (Zucc.) Trotter) Varieties for Lodging Resistance. Acad. Res. J. Agri. Sci. Res. 8(4): 263-276
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