Cotton hybrid seed preparation method utilizing insect pollination

A hybrid and insect technology, applied in the fields of botanical equipment and methods, applications, and plant genetic improvement, can solve the problems of complex management of seed production, high cost of seed production, and high work intensity, and achieve easy quality supervision and control. Seed production cost and the effect of reducing labor input

Inactive Publication Date: 2004-06-16
INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to address the above problems, to propose a method for completing pollination by insects and realizing cotton hybrid seed production. Complicated, high seed production costs and other disadvantages, and can further improve the purity of hybrid seeds

Method used

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  • Cotton hybrid seed preparation method utilizing insect pollination
  • Cotton hybrid seed preparation method utilizing insect pollination
  • Cotton hybrid seed preparation method utilizing insect pollination

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Location: South Field Test Site of China Cotton Research Institute, Anyang City, Henan Province

[0022] Material: Medium resistance A, new cotton 33B (male parent), bee

[0023] Environment: net room

[0024] Area: 600 square meters

[0025] Methods: On April 23, a suitable plot of 600 square meters was selected in the southern field of the Zhongmian Institute in Anyang City, Henan Province. Zhongkang A and the male parent Xinmian 33B were planted in the ratio of 3:1, live broadcast, and managed at the seedling stage. The same as the field; the fertile plants in the female parent were pulled out in the first ten days of June. 2 In the net room of ×0.7m, artificial bees have been stocked on July 12, with about 6,000 bees. They are fed 0.25 kg of sucrose every day to supplement the nutrition of bees, and pesticides are not sprayed during the entire seed production period. On August 18, the bees were removed, which lasted 37 days. From September 1, the number of bolls...

Embodiment 2

[0032] Location: Farmland in Tanghe County, Nanyang City, Henan Province

[0033] Material: Medium resistance A, new cotton 33B (male parent), bee

[0034] Environment: Daejeon

[0035] Area: 2.5 acres

[0036]Methods: A suitable farmland plot of 2.5 mu was selected in Tanghe County, Nanyang City, Henan Province, and the seedling transplanting method was adopted. Zhongkang A was transplanted in a "Z" shape, and the male parent new cotton 33B was transplanted on the central axis. 20 female parents: 2 male parents are planted at intervals. The small row spacing is 30cm, and the large row spacing is 80cm, that is, the width of the wheat field is 50cm, and the reserved width is 30cm. The transplanting density of the female parent is about 5000 plants / mu, and the density after pulling out the fertile plants is about 2300-2600 plants / mu. The density of the male parent is about 600 plants / mu, and more than 30 sesame trees are scattered on demand in the ground to prevent the migra...

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Abstract

The invention relates to an agronomic crop hybrid vigor utilizing method, wherein a transgenic pest-resistant sterile line is used as female parent, the conventional transgenic pest-resistant cotton is used as male parent for formulating hybridized combination, the pollination is completed through artificial breading of honey bees and miscellaneous insects existed in the nature and the first-filial generation seeds are produced. The invention overcomes the drawbacks of time and labor consuming, high working strength, comprehensive management for production of hybrid seeds and high cost of seeds production existed in the artificial pollination emasculation hybrid method for seed making, and can further improve the pureness of the hybrid.

Description

Technical field: [0001] The invention belongs to a method for utilizing crop heterosis, in particular to a method for preparing cotton hybrids by using insect pollination. Background technique: [0002] Cotton is the most important economic crop in the world. Like corn, rice and other crops, cotton also has obvious heterosis. Cotton hybrids have become more and more important in cotton production in recent years, and have become one of the main ways to increase cotton yield and improve cotton fiber quality. At present, the production method of cotton hybrid seeds is mainly artificial tasseling and pollination hybrid seed production. More than 90% of the hybrid seeds planted in cotton production are produced in this way. The artificial emasculation and pollination hybrid seed production method is the most relevant technical method in this patent. The following is a brief introduction to it from the three aspects of its purpose, steps and effects. [0003] The artificial tas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 邢朝柱郭立平靖深蓉苗成朵王海林王海芹
Owner INST OF COTTON RES CHINESE ACAD OF AGRI SCI
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