Double layer rice selective breeding method

A double-layer, variety technology, applied in the field of double-layer rice matching, to achieve the effects of preventing and controlling field diseases and insect pests, increasing yield potential, and good ventilation

Inactive Publication Date: 2006-10-11
HUNAN HYBRID RICE RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this context, to continue to greatly increase the utilization rate of group light energy can only develop towards three-dimensional space

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, the qualified seeds of the three-line hybrid rice Weiyou 46 are used as the seeds of the base rice variety, and the seeds of Tyou 300 are sequentially blended in a weight ratio of 75:25, and evenly mixed to form the mixed seeds of double-layer rice. Bag packaging is put into use. From the beginning of sowing, the cultivation and management methods of general hybrid rice are carried out until harvesting. The Tyou 300 seed is used as a high-rise rice, and its growth period is equivalent to that of Weiyou 46 as a grass-roots rice. ~50cm range.

Embodiment 2

[0016] In Example 2, qualified seeds of the three-line hybrid rice Weiyou 46 were used as grassroots rice variety seeds, and were blended with Tyou 300 seeds sequentially in a weight ratio of 90:10, and the others were the same as in Example 1.

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PUM

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Abstract

The invention provides a method for selecting bi-layer rice, comprising following steps: (1) preparing basic-layer rice seed with normal seed preparing method by selecting short-stem rice variety or strain; (2) preparing high-layer rice seed with normal seed preparing method by selecting high-stem rice variety or strain; the difference in crown height during ear-homogenous period between the high-layer and basic-layer is 5-100 cm; (3) matching according to proportion of 50-98: 2-50 between basic-layer and high-layer, mixing evenly and getting bi-layer rice seed. The got rice variety can make full use of light and temperature more effectively and thus increase the rice yield potential by 5-30%.

Description

technical field [0001] The invention relates to a matching method of double-layered rice, belonging to the technical field of breeding methods for new plant varieties. Background technique [0002] As one of the most important food crops in the world, especially in Asia, rice has made great progress in the genetic improvement of yield traits in the past 30 years. The dwarf breeding of rice varieties in my country that began in the mid-1950s and the large-scale application of hybrid rice in the 1970s brought about two leaps in rice production in my country. The combination of inter-subspecies heterosis utilization and morphological improvement has brought great success to today's super hybrid rice breeding. However, a grim reality that cannot be ignored is that the arable land area of ​​the world is still decreasing at this stage, while the population is increasing year by year. The per capita arable land area in my country has also dropped from 2.7 mu in 1950 in the early ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H5/10A01G16/00A01G7/00A01G22/22
CPCY02A40/10
Inventor 邓启云庄文石利娟熊跃东
Owner HUNAN HYBRID RICE RES CENT
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