A method for rapid and precise breeding of three-line rice restorer lines using rice genomics technology
A genomics and restorer line technology, applied in the fields of botanical equipment and methods, plant gene improvement, and application, can solve the problems of insufficient aggregation of comprehensive excellent traits, long years of breeding three-line restorer lines, etc., to reduce blindness, Shorten the improvement generation and expand the effect of the genetic background
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Embodiment 1
[0023] This example provides a rapid and accurate breeding of rice with more excellent traits by using the whole genome technology of rice, using "Huanghuazhan" with better plant type, fertilizer tolerance, lodging resistance and high seed setting rate as the parent to be improved The method of restoring new varieties, its technical roadmap is as follows: figure 1 shown, including the following steps:
[0024] (1) hybridization
[0025] "Huanghuazhan" was used as the female parent, and the restorer line "Huazhan" with excellent agronomic traits, early maturation, rice blast resistance Pi2 gene, and good quality was used as the male parent. The male parent was backcrossed once, and the obtained BC1F1 generation was selfed again to obtain 1200 BC1F2 segregation populations.
[0026] (2) Screening of field agronomic traits
[0027] Screen the BC1F2 generation segregation population in step (1) for field agronomic traits, select 126 excellent individual plants with better plant...
Embodiment 2
[0049] This example provides a rapid and accurate selection of rice with more excellent traits by using the rice genome-wide technology and using "9311" with better plant type, fertilizer tolerance, lodging resistance and high seed setting rate as the parent to be improved The method of restoring new varieties, its technical roadmap is as follows: figure 1 shown, including the following steps:
[0050] (1) hybridization
[0051] "9311" was used as the female parent, and the restorer line "YR0822" with excellent agronomic traits, early maturation, rice blast resistance Pi2 gene, and good quality was used as the male parent. This backcross was once, and the BC1F1 generation obtained was self-crossed again, and 1100 BC1F2 isolated populations were obtained.
[0052] (2) Screening of field agronomic traits
[0053] Screen the BC1F2 segregation population in step (1) for field agronomic traits, select 119 excellent individual plants with better plant and leaf morphology, continu...
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