Black glutinous maize hybrid breeding method

Abstract

The invention belongs to the technical field of maize hybrid breeding, and discloses a black glutinous maize hybrid breeding method. A black glutinous maize hybrid is bred by adopting a self-bred improved white glutinous maize inbred line S181 as a female parent and adopting a self-bred black glutinous maize inbred line B140 as a male parent. According to the method, a novel high-quality black glutinous maize germplasm material is created, a black glutinous maize line is purified simultaneously for test-crossing, and a target line is selected, and is hybridized with the existing improved white glutinous maize inbred line to breed a new black glutinous maize variety, i.e. black glutinous maize 600, which is high in apparent commodity and quality, moderate in yield and suitable for fresh eating or processing, so that the shortcomings that an existing black glutinous maize variety is hard, thick in skin, poor in commodity and the like after being cooked are greatly improved; the black glutinous maize 600 is bred to supply a gap in breeding of a black glutinous maize variety in a southwest region; in addition, a new thought is also provided for breeding of a novel black glutinous maize variety by a combined white glutinous maize and black glutinous maize mode.

Description

technical field [0001] The invention belongs to the technical field of corn hybrid breeding, in particular to a breeding method for black waxy corn hybrids. Background technique [0002] Black glutinous corn is a kind of precious fruit and vegetable corn, its appearance is black and unique, and it is a high-quality natural black health food that integrates color, aroma and taste. Black corn kernels are high in protein and other organic nutrients, of which the average protein content is 11.26%, which is 29.8% higher than that of ordinary corn Nongda 60 (hereinafter referred to as ordinary corn); the fat content is 5.84%, which is 60.4% higher than that of ordinary corn; crude fiber content The average is 3.85%, which is 40% higher than that of ordinary corn. The content of seventeen amino acids such as aspartic acid was much higher than that of ordinary yellow corn. At present, the existing black waxy corn varieties on the market (such as Jinnuo No. 8, Jinnuo No. 10, etc.) ...

AI Technical Summary

Problems solved by technology

Currently available black waxy corn varieties on the market (such as Jinnuo 8, Jinnuo 10, etc.) are mostly characterized by unsatisfactory ear appearance, low ear formation rate, thick and hard skin, poor adaptability, and poor adaptability to fertilizer and water. Disadvantages such as strict requirements

However, in the process of breeding black waxy corn varieties, the difficulty is that the purification of black waxy corn inbred lines requires a long generation, and the quality cannot be guaranteed.

If both parents of black waxy corn hybrids are inbred lines of black waxy corn, the breeding cycle will be longer, and the quality, yield, resistance, etc. will not be as expected.

[0003] To sum up, the existing problems in the prior art are: (1) the breeding of black waxy corn hybrids and germplasm research are in the initial stage of development, and the existing black waxy corn varieties on the market have unsatisfactory ear appearance and commerciality, The rate of ear formation is not high, the skin feels thick and hard, poor adaptability, strict requirements on fertilizer and water, etc.

(2) The seed coat color of black waxy corn is controlled by dominant genes, and the conventional method of breeding and purifying inbred lines takes a long generation cycle

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