Method for improving the seedling-becoming ratio hybridized with planting rice and different genome type wild rice
A wild rice and genome technology, applied in rice cultivation, plant cultivation, plant genetic improvement and other directions, can solve the problems of low efficiency, low embryo formation rate, difficult to obtain, etc., and achieves low technical difficulty, improved embryo formation rate, and easy to master. Effect
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[0012] First of all, it is necessary to understand the morphological and physiological characteristics of non-AA wild rice, including flowering habit (flowering time, powder quantity, powder dispersion characteristics), high and low temperature tolerance, photosensitivity and so on. The flowering period of wild rice of different genotypes and the parents of cultivated rice is adjusted to the most suitable temperature conditions (25℃-32℃) for flowering and powdering of wild rice of different genotypes and flowering and fertilization of cultivated rice by shading treatment and sowing in stages. With the help of temperature control equipment such as artificial climate chambers, the temperature can be adjusted, so that a large amount of fresh pollen of wild rice with high vitality can be obtained regardless of the season. If wild rice and cultivated rice do not meet in time, use dark kraft paper bags to cover the flowering spikelets to delay flowering, and pollen is not easy to be ...
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