Breeding method for large-ear high-quality rice variety in machine-transplanted seedling planting

A technology for mechanical transplanting and varieties, which is applied in the directions of botanical equipment and methods, plant genetic improvement, and application to achieve the effects of large-scale production, strong lodging resistance, and expansion of the planting area of ​​mechanically transplanted rice.

Active Publication Date: 2018-12-11
SUQIAN AGRI SCI RES INST JIANGSU ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of obtaining high yield by

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

The invention discloses a breeding method for a large-ear high-quality rice variety in machine-transplanted seedling planting. The breeding method comprises the following seed breeding steps of (1) screening of parents; (2) hybridizing and group matching; (3) breeding of system; (4) multiple verification; (5) machine-transplanted seedling planting and detection of lodging resistance. A novel variety of japonica rice bred by a large-ear high-quality japonica rice seed breeding method for the machine-transplanted seedling planting is mainly characterized in that the ear is larger, the total grain number of each ear is 167.3 grains, the fruiting rate is 84.2%, and the number of solid grains of each ear is 140.9 grains; the quality of rich is high, and can reach ministerial standard Class 3; the lodging-resistant ability is strong, and all seedlings maintain upright in the field; the mature period is proper, the whole growth period is 156.2 days, and is uniform with the whole growth periodof contrast Xudao No.3, and the requirement on the large-ear high-quality variety by the machine-transplanted seedling planting in the Huang-Huai area in the later period can be met; the machine-transplanted seedling planting area of the area can be expanded, the problem of lack of rural labor is solved, the contradiction between high output and high quality is coordinated, and the breeding method is suitable for 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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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
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