Method for improving breed by introducing panax quinquefolius DNA into rice

Abstract

The invention discloses a method for improving a breed by introducing panax quinquefolius DNA into rice. The method comprises the steps of: firstly extracting panax quinquefolius total DNA to prepare panax quinquefolius total DNA solution; secondly planting parent rice, introducing the panax quinquefolius total DNA solution into the parent rice after the rice blossoms and continuing planting to harvest rice containing panax quinquefolius total DNA; thirdly planting seeds of the rice containing panax quinquefolius total DNA, observing the planted rice group in the growth period and selecting a variant with one or a plurality of character differences from the parent rice from the rice group to harvest the variant; and finally planting variant seeds and breeding the improved breed of rice by a systemic breeding method. The method has the advantages that the growth period of the improved breed of rice bred by the method is ahead of time; the number of ears of the single plant, the total seed number per ear, the number of filled seeds and the ripening rate are improved to different extents; and the improved breed has excellent characters.

Description

technical field [0001] The invention relates to the field of crop breeding, in particular to a method for introducing American ginseng DNA into rice for variety improvement. Background technique [0002] Rice is one of the main food crops in the world. China's rice planting area accounts for about 1 / 4 of the world's total rice planting area, accounting for 1 / 3 of the country's grain planting area, and its output is about 37% of the world's total rice output, nearly 45% of the country's total grain output, from Hainan Province in the south, to the northern part of Heilongjiang Province in the north, to Taiwan Province in the east, and to the Xinjiang Uygur Autonomous Region in the west; Rice cultivation. [0003] The yield of rice is composed of factors such as the number of panicles per mu, the number of grains per panicle (number of spikelets), the rate of seed setting, and the weight of grains (thousand-grain weight). In recent years, my country's rice planting area has ...

AI Technical Summary

Problems solved by technology

Continuously increasing rice yield and improving its quality is an important task of current rice breeding, but it is difficult to achieve simply relying on traditional genetic breeding

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