Breeding method of new wheat variety resistant to strong light and high temperature
The invention discloses a method for breeding a new variety of wheat resistant to strong light and high temperature. The method comprises the following steps: hybridizing Xinmai 26 serving as a female parent and Zheng wheat 7698 serving as a male parent; taking the F1 generation material as a female...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a method for breeding a new variety of wheat resistant to strong light and high temperature. The method comprises the following steps: hybridizing Xinmai 26 serving as a female parent and Zheng wheat 7698 serving as a male parent; taking the F1 generation material as a female parent and Zheng wheat 0856 as a male parent to obtain a multiple cross F1 generation, and selecting single plants with excellent agronomic characters, Fv/Fm greater than or equal to 0.77 and qP greater than or equal to 0.68; planting the generation F2, breeding excellent single plants of the generation F2-F4 according to the previous process, planting the generation F5, selecting strains with excellent characters, measuring the net photosynthetic rate Pn, the transpiration rate Tr, the PSII maximum photochemical efficiency Fv/Fm and the photochemical quenching coefficient qP of the strains, selecting strains with the Pn being greater than or equal to 22.5 [mu] mol CO2 * m * s , the Tr being greater tha |
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