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A method of breeding rice varieties with large spikes and high quality suitable for planting by machine transplanting

A technology for mechanically transplanting rice seedlings and varieties, which is applied in the fields of botanical equipment and methods, plant genetic improvement, application, etc.

Active Publication Date: 2021-07-06
SUQIAN AGRI SCI RES INST JIANGSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of obtaining high yield by expanding the planting area is no longer advisable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] Embodiment: the breeding process of Sidao No. 16

[0022] (1) In the season of Siyang in 2009, Suxiu 867 was used as the female parent and Sidao 09-5966 was used as the male parent to perform hybrid mating to obtain hybrid F1 seeds;

[0023] (2) In the winter of 2009, hybridized F1 generation seeds were planted in Hainan Breeding Base, and F2 generation seeds were obtained by mixed harvesting;

[0024] (3) Continuously planted for multiple generations from 2010 to 2012, adopting the method of single plant screening, screening offspring materials with good performance in the field, large panicle type, more than 120 grains per panicle, and suitable plant height (95cm-105cm) , combined with indoor appearance quality test varieties, screening offspring materials with good rice appearance, slender rice grains, low chalky grain rate and chalkiness degree (chalky grain rate less than 30%, chalkiness degree less than 5%), Obtained 29 copies of relatively stable F7 generation m...

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Abstract

A method for breeding rice varieties with large spikes and high quality suitable for planting by machine transplanting, comprising the following breeding steps: (1) parental screening; (2) crossbreeding; (3) systematic breeding; (4) multiple identification; (5) ) machine-transplanted rice planting and lodging resistance testing. The invention provides a japonica rice breeding method with large spikes and high quality suitable for planting by machine-transplanted rice seedlings. The innovations of the new japonica rice varieties bred are mainly as follows: larger spikes, 167.3 grains per spike, and 84.2% seed setting rate. The number of grains is 140.9 grains; the quality of the rice is excellent, and the ministerial award is excellent 3; the lodging resistance is strong, and the field performance is 100% upright; the ripening period is suitable, and the whole growth period is 156.2 days, which is consistent with the control Xudao No. 3. Demand for high-quality varieties with large spikes in machine-transplanted seedlings in the region. It can expand the planting area of ​​machine-transplanted rice seedlings in this area, better solve the shortage of rural labor force, coordinate the contradiction between high yield and high quality, and help realize the large-scale production of rice.

Description

technical field [0001] The invention belongs to the technical field of improved varieties, and relates to a method for breeding rice varieties, in particular to a method for breeding rice varieties with large spikes and high quality suitable for planting by machine transplanting. Background technique [0002] Rice is one of the most important food crops in the world, accounting for 1 / 3 of the global grain planting area and providing 40% of the calories for humans. As the world population continues to increase, it is estimated that global rice production will have to reach 800 million tons by 2025 to meet the growing demand of the population. my country is a major producer and consumer of rice, but at the same time faces unfavorable factors such as population growth, land resource and water resource constraints. The traditional method of obtaining high yield by expanding the planting area is no longer advisable. The improvement of quality and efficiency of rice production m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 陈春陈卫军赖上坤
Owner SUQIAN AGRI SCI RES INST JIANGSU ACAD OF AGRI SCI