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Artificial Pollination Method for Cotton Hybrid Breeding

A technology of artificial pollination and cross-breeding, applied in the fields of botany equipment and methods, plant genetic improvement, application, etc., can solve problems such as environmental pollution, time-consuming and labor-intensive

Active Publication Date: 2021-08-20
聊城市农业科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of environmental pollution, time-consuming and labor-consuming in the process of cotton cross-pollination, the present invention seeks suitable cross-pollination methods and tools, and obtains the greatest results and returns with the lowest cost, the fastest and most convenient method

Method used

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  • Artificial Pollination Method for Cotton Hybrid Breeding
  • Artificial Pollination Method for Cotton Hybrid Breeding
  • Artificial Pollination Method for Cotton Hybrid Breeding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 Cotton hybrid breeding artificial pollination method

[0040] 1. Using tools

[0041] Choose a rope that is easy to distinguish from the middle and late colors (green, white) of the cotton plant. In order to save the cost of seed production, this method uses red or yellow polyester or acrylic medium thick wool. Such as figure 1 shown.

[0042] 2. Operation method

[0043] 1. Pruning

[0044] Generally, pruning is carried out in late June to early July before the start of hybrid breeding work to remove redundant buds and leaf branches, which is conducive to ventilation and light transmission of cotton plants, and improves fruit setting rate.

[0045] 2. Castration time

[0046] 2.1 Date of emasculation

[0047] The date of emasculation in hybrid breeding is about 10 days after flowering. According to the flowering habit of cotton, early buds tend to fall off or form rotten bolls in the later stage, which is not conducive to the rate of hybridization. ...

Embodiment 2

[0067] The comparison of embodiment 2 inventive method and traditional pollination method

[0068] Three treatments were set up in the experiment, and the parents of each treatment were the same. Liaomian 6, a cotton variety with higher yield and better ripeness, was selected as the female parent, and 30 cotton varieties with better quality, such as K836, Liaomian 15, and Lumian 28, were selected as the male parent to improve the quality of the female parent. There were 3 treatments in the experiment, and the number of flowers stripped by each treatment was marked with marking lines of different colors. Each treatment had 30 identical hybrid combinations, and the pollination number of each combination was 20 hybrid bolls. The pollination number is 600 in total. Each parent parent of each combination is planted at a ratio of 1:3, and the female parent has 3 rows. Each row uses a different hybridization method, but uses the same male parent pollen for pollination, and marks wit...

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Abstract

The invention provides a method for artificial pollination in cotton hybrid breeding. Cotton plants are stripped of flowers about 10 days after flowering, manually emasculated, and after stripping, a marking line is placed on the bell handle, and the marking line is wrapped around the bract leaves to isolate the outside world. Pollen: Carry out artificial pollination the next day, during pollination, break the marking line wound on the female parent bract, separate the bract, apply the male parent's pollen on the female parent's stigma, and the marking line is still tied on the flower stalk after pollination, It is no longer necessary to wrap around bracts to distinguish it from unpollinated female flowers. The invention improves part of the operation links in flower peeling and pollination, greatly improves work efficiency, improves boll forming rate and fruit setting rate, and improves the ecological environment of cotton fields.

Description

technical field [0001] The invention belongs to the technical field of cotton breeding, and in particular relates to an artificial pollination method for cotton hybrid breeding. Background technique [0002] Cotton belongs to the genus Gossypium Malvaceae and belongs to the often outcrossed crops. Cotton hybridization technology plays an important role in cotton breeding. Cotton hybridization is divided into two steps: peeling and pollination. The traditional hybrid breeding method uses wheat straw tubes or plastic straws to cover the pistil stigma for isolation during the specific operations of peeling and pollination. The process is cumbersome, labor-intensive and time-consuming, and the work efficiency is low. , and the plastic isolation tube used after peeling off the flowers is easy to cause secondary pollution. For example, after the traditional pollination method strips the flowers, the marking line is tied to the bell handle, and then a casing (wheat straw or plast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02
CPCA01H1/02
Inventor 尹会会杨中旭李秋芝李海涛王士红李彤商娜张晗孙允超
Owner 聊城市农业科学研究院
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