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RISS 인기검색어
- 검색키워드
- 저자 : Shimelis Hussein (검색결과 2 건)
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Kwame Wilson Shamuyarira,Hussein Shimelis,Terence Tapera,Toi John Tsilo 한국작물학회 2019 Journal of crop science and biotechnology Vol.22 No.2
Genetic variation and heritability estimates in early generations are important in identifying superior families that can be targeted for genetic advancement. Early generation selection has been a successful tool to enhance selection efficiency in plant breeding programs. The aim of this study was to select and advance F3 families of wheat relative to their parents for drought tolerance using agronomic traits. Twelve parental lines and 66 newly-developed F3 families were evaluated using a 6x13 alpha-lattice design under drought-stressed and non-stressed conditions. Considerable genetic and phenotypic variation was observed for days to heading, plant height, spike length, kernels per spike, fresh biomass, and grain yield. Expected genetic gains were high for fresh biomass and grain yield. The families LM02xLM05, LM02xLM23, LM09xLM45, and LM13xLM45 were high yielding with high biomass values and are recommended for genetic advancement using single seed descent.
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Mizan Tesfay Abraha,Shimelis Hussein,Mark Laing,Kebebew Assefa 한국작물학회 2017 Journal of crop science and biotechnology Vol.20 No.5
The extent of genetic variation and heritability of a trait are among the major determinants of selection gains in plant breeding programs. The aim of this study was to determine the magnitude of genetic variation and inheritance of grain yield, and component traits of newly developed tef populations under moisture-stressed and non-stressed conditions for drought tolerance breeding. Seventeen crosses along with the parents were evaluated in the F2 generation under moisture-stressed and non-stressed conditions in northern Ethiopia during 2015 and 2016. There were marked genotypic and phenotypic variation among the crosses in the F2 generation for plant height, panicle length, peduncle length, number of productive tillers per plant, main shoot panicle seed weight, biomass yield, and grain yield under both test conditions, important for successful selection and genetic advancement. The families of DZ-Cr-387 x 207832 and DZ-Cr-387 x 222076 were high grain yielders with early maturity under both test conditions.
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