CN1402970A - Three-color cross breeding process of natural color cotton - Google Patents

Abstract

The present invention discloses one kind of three-color cross breeding process of natural color cotton. In the first year, first filial generation of double-cross bred hybrid brown cotton is bred with white cotton as male parent and brown cotton as female parent; and in the next year, three-cross hybrid is bred with the first filial generation as male parent and green cotton as female parent. The obtained double-cross hybrid and the three-cross hybrid have fiber length 4 mm longer than their parents. The present invention has low breeding cost and makes green cotton has both heterosis and natural color.

Description

Natural color-cotton three look cross-breeding methods

Technical field:

The present invention relates to a plant species producing method for seed.

Background technology:

Existing colored cotton kind, its fibre length is shorter, and quality is not good enough, utilizes the mutual cross of colored cotton phase, can not improve its fiber quality, adopts high quality white cotton for wadding kind and green cotton for wadding to do parent's hybridization simply, can not keep the intrinsic natural colour of green cotton for wadding again.

Summary of the invention:

The object of the present invention is to provide and a kind ofly can improve the colorful cotton fibre quality, can keep the natural color-cotton three look cross-breeding methods of its natural colour again.

Technical solution of the present invention is:

A kind of natural color-cotton three look cross-breeding methods, its feature: comprise the following steps:

1. made male parent with the white cotton fiber cotton in 1 year, brown cotton for wadding is done maternal, cultivates double cross hybrid--the first generation of hybrid of combining cotton for wadding;

2. 1 year is male parent with the above-mentioned first generation of hybrid, is female parent with green cotton for wadding, cultivates triple hybrid.

Above-mentioned white cotton fiber cotton is common land white cotton fiber cotton or sea-island cotton white cotton fiber cotton.

The prepared double cross hybrid of the present invention (brown), color cotton the raising more than the fibre length 4mm of the comparable parent of triple hybrid (green), and breeding cost is low, solve green cotton for wadding simultaneously and be difficult to utilize heterotic problem, made green cotton for wadding both have hybrid vigour, kept its natural colour again.

Embodiment:

Embodiment 1:

A kind of natural color-cotton three look cross-breeding methods:

1. made male parent with common land white cotton fiber cotton in 1 year, brown cotton for wadding is done maternal, cultivates double cross hybrid--the first generation of hybrid (brown) of combining cotton for wadding;

2. 1 year is male parent with the above-mentioned first generation of hybrid, is female parent with green cotton for wadding, cultivates triple hybrid (green).

Concrete crossover operation method between the parent is identical with common cotton crossover operation method.Embodiment 2: common land white cotton fiber cotton is replaced to sea-island cotton white cotton fiber cotton, and all the other are all with embodiment 1.

Claims (2)

1, a kind of natural color-cotton three look cross-breeding methods is characterized in that: comprise the following steps:

1. made male parent with the white cotton fiber cotton in 1 year, brown cotton for wadding is done maternal, cultivates double cross hybrid--the first generation of hybrid of combining cotton for wadding;

2. 1 year is male parent with the above-mentioned first generation of hybrid, is female parent with green cotton for wadding, cultivates triple hybrid.

2, natural color-cotton three look cross-breeding methods according to claim 1 is characterized in that: the white cotton fiber cotton is common land white cotton fiber cotton or sea-island cotton white cotton fiber cotton.