Rice breeding method capable of preventing pollen drifting

Abstract

The invention discloses a method of paddy rice breeding with the function of preventing pollen from flowing. The method comprises the following steps: a paddy rice reproductive isolation gene is introduced into the paddy rice so that cross-pollinated hybrid F1 cannot grow normally in a paddy field, thus achieving the purpose of preventing the pollen from flowing and ensuring purity of the paddy rice seed. The paddy rice reproductive isolation gene can be chosen from any one of the genes which can generate the following characteristics: hybrid weakness, hybrid lethality, hybrid collapse, hybrid sterility and hybrid depression.

Description

technical field

[0001] The invention belongs to the field of production methods of rice seeds. Specifically, the present invention relates to a new breeding method that uses the reproductive isolation mechanism of rice to avoid manual removal of impurities, prevent pollen drift, ensure the purity of rice seeds and prevent the escape of exogenous transgenes. Background technique

[0002] The successful use of rice heterosis in my country in the 1970s increased the rice yield by about 20% on the basis of dwarf breeding, and achieved huge social and economic benefits. At present, the seed production methods of hybrid rice mainly include two-line and three-line methods, and the purity of hybrid rice seeds directly determines whether heterosis can be popularized and applied in production; Seed production isolation work will spend a lot of manpower, material and financial resources.

[0003] Plant transgenic technology is one of the most remarkable achievements in the field of l...

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