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Hybrid rice breeding method

A hybrid rice, parent-based technology, applied in the directions of botanical equipment and methods, applications, and plant genetic improvement, can solve the problem of not being able to meet new varieties at the same time

Inactive Publication Date: 2004-05-19
HAINAN SHENNONG DAFENG SEED TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the strategic adjustment of hybrid rice combination (variety) structure, the market demand for high-quality hybrid rice has become more and more obvious. Some of them are "two-line method" hybrid rice. Since the parental characteristics of these new varieties are different from those of Vyou and Shanyou series, the above patented seed production technology cannot meet the requirements of these new varieties at the same time.

Method used

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Embodiment Construction

[0012] The present invention will be described in detail below.

[0013] Before implementing step a of the present invention, first determine the safe period of outcrossing seed production and the safe period of harvest. The specific steps are as follows:

[0014] With the province as the unit, the historical meteorological data obtained by the meteorological stations (about 50 kilometers away) under the general climate conditions of the whole province are analyzed by computer, and the occurrence days of the disastrous meteorological factors (low temperature and rain, high temperature and low humidity, heavy rain and strong wind) for seed production are carried out. Probability plot. Then according to the different hybrid rice combination seed production safety and fertility sensitive period (referring to the two-line method), safe heading and flowering period, safe harvest period, and the requirements for climatic conditions, select and determine the best seed production ecologic...

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Abstract

The hybrid rice breeding method of the present invention includes seedling the male and female parent in certain time difference to obtain synchronous blooming period, applying fertilizer and chemical to create optimal intercross state, inducing female parent in its sensitive period, applying chemical fertilizer to strengthen the activity of male parent pollen, and auxiliary artificial pollination in the pollen spreading fastigium of male parent.

Description

[0001] TECHNICAL FIELD The present invention relates to a method for producing plant seeds, particularly a method for producing hybrid rice seeds. Background technique [0002] China's hybrid rice seed production technology has always been a world leader. On January 25, 1992, the inventor applied to the Chinese Patent Office for a "super-high-yield hybrid rice seed production method". The invention was granted an invention patent in 1995 with the patent number ZL 92 1 06819.0. This patented technology has continuously pushed the production of hybrid rice seed production to a new level, greatly reduced seed costs, simplified production procedures, and made a major contribution to the development of hybrid rice, creating huge social and economic benefits. [0003] The above-mentioned patents are mainly proposed for the "three-line method" hybrid rice, especially the characteristics of the combination of V You and Shanyou series. However, with the strategic adjustment of the hybrid ri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02
Inventor 黄培劲
Owner HAINAN SHENNONG DAFENG SEED TECH
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