Whole ear sprout cultivation method for cultivating rice stock seed

Abstract

The invention relates to a spike-arranging seedling-breeding method of the rice three garden basic seed production. The present invention has the application steps that: (1) the selection of a fine single spike: strong and high anti-adversity single spikes 300-500 plants with the typical characters of the variety are selected as the next year ear-to-row garden material; (2) ear-to-row garden: after sterilizing the seed of the single spike selected in the last year, the branches are unfolded and the spikes are arranged and the breeding seedlings are placed; each spike seedling field occupies 30*20cm area, the selected spike rows, discarded rows, and fine variable spike rows are marked; the selected spike rows are numbered, and the harvest is performed by a single row, the threshing is performed separately, the seed is examined strictly as the spike series garden material; (3) spike series garden: the seedling of the selected spike rows last year is bred separately in every single spike row, and the seedlings into a sub-field which is called a spike series is transplanted; the spike series which cannot typically grow are discarded, the harvested selected fine spike series are mixed and threshed, and then the basic seed is obtained; (4) basic seed field: the seeds of the spike series harvested last year are seeded and mixed in the basic seed field, an isolation belt is arranged between varieties, to realize one variety one garden. The method is simple with obvious effect.

Description

technical field [0001] The invention relates to a method for producing rice seeds in the planting industry, in particular to a method for whole panicle and seedling cultivation of rice three nursery original seeds. Background technique [0002] The traditional breeding technique of the original rice seed in the three nurseries is to select several single panicles with the typical characteristics of the variety at the initial stage, and after re-selection, the panicle is used as the unit for threshing and seedling raising. This method is not only tedious for threshing and raising seedlings, but also easily causes mechanical confusion. Seed multiplication units mostly adopt relatively extensive and simple "single plant selection method" or "strain selection method". The quality of seeds produced by these two methods is difficult to guarantee, and the purity is generally below 99.5%. At the same time, the use of these two methods requires that the breeding technicians are firs...

AI Technical Summary

Problems solved by technology

This method is not only cumbersome for threshing and seedling raising, but also easily causes mechanical confusion.

Seed multiplication units mostly adopt relatively extensive and simple "single plant selection method" or "strain selection method". The quality of seeds produced by these two methods is difficult to guarantee, and the purity is generally below 99.5%.

At the same time, the use of these two methods requires that the breeding technicians are first of all very familiar with the breeds to be propagated, and accurately grasp the characteristics of the breeds to be propagated, and secondly, the proportion of single plants or strains selected each year is relatively large, so as to ensure the reproduction of the breeds. The variety is the original characteristic. Due to the deviation of the knowledge of the original variety among the breeding technicians, after two years of breeding, it is difficult for the variety to maintain the original characteristics.

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