Paddy rice breeding method

Abstract

The invention belongs to the technical field of paddy rice breeding and discloses a paddy rice breeding method. According to the paddy rice breeding method, an imported foreign material is hybridizedwith a local variety; after different generations of separation and selection are carried out, properties are listed as follows: a combination (1): IR71121-35-1-1-1-2 / V13 hybridized F4 has the plant height of 80 cm, the quantity of total grains per ear is 246.7 and the fruiting rate is 73.4 percent; a combination (2): IR64446-2 / Dianjingyou No. 5 hybridized F5 has the plant height of 90 cm, the quantity of total grains per ear is 189.0 and the fruiting rate is 93.5 percent; a combination (3): Taebongbyeo / Undong 31 / / Yujing No. 8 hybridized F3 has the plant height of 90 cm, the quantity of totalgrains per ear is 203.0 and the fruiting rate is 91.0 percent. The paddy rice breeding method provides abundant paddy rice breeding resources for scientific researches and variety improvement of riceculture; the intra-regional and inter-regional genetic diversity is further expanded and a new leap of the production of paddy rice is realized.

Description

technical field [0001] The invention belongs to the technical field of rice breeding, in particular to a rice breeding method. Background technique [0002] About 60% of my country's population takes rice as a staple food, so increasing rice production is a major issue for sustainable agricultural development and ensuring food security in my country. As the process of industrialization and urbanization is engulfing rice fields, the fundamental way out to meet the challenge of population growth on food demand and ensure the steady development of the national economy is to increase the yield potential per unit area. Grain is a special strategic commodity, which is related to national economy and people's livelihood, political stability and social stability. Once there is a shortage of food and the food problem cannot be solved, economic development and social stability will lose their solid foundation. At present and for a long period of time in the future, it is impossible ...

AI Technical Summary

Problems solved by technology

As a result, breeders do not have sufficient breeding resources available, the available breeding materials are limited, and most of the bred varieties (lines) are inbred lines

[0007] (2) Not making good use of foreign "intellectual" resources and germplasm resources and organically combining domestic technical personnel and local rice seed resources

As a result, good breeding methods and germplasm resources have not been fully applied, good genetic genes have not been fully utilized, and the genetic heritability of bred varieties (lines) is narrow

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