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Breeding method of sweet waxy corn

A technology of sweet waxy and sweet corn, applied in botany equipment and methods, plant genetic improvement, application, etc., can solve the problems of sweet waxy corn, such as delicious but not high yield, and achieve the effect of delicious, high yield and stable seed cultivation

Pending Publication Date: 2022-06-03
HAINAN FREESITE SPROUT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the deficiencies of the prior art, the present invention provides a method for breeding sweet waxy corn, which solves the problem that the sweet waxy corn is delicious but not high-yield

Method used

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  • Breeding method of sweet waxy corn

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Effect test

Embodiment 1

like figure 1 As shown, the embodiment of the present invention provides a breeding method for sweet waxy corn, including hybridization method selection, and the hybridization method selects sweet waxy corn that can be hybridized with waxy corn, sweet corn, and waxy sweet corn. , the excellent characters in waxy corn, sweet corn, and waxy sweet corn are introduced into sweet waxy corn, and an excellent sweet waxy corn inbred line with high combining ability is selected. The specific method is as follows:

S1. Select healthy and plump sweet glutinous corn and hybridize with ordinary healthy plump corn kernels to obtain a primary selection, and then self-cross the primary selection to obtain a configuration hybrid;

S2. Cross the configuration hybrids with waxy corn, sweet corn, and waxy sweet corn respectively to obtain a first-generation hybrid, and the first-generation hybrid is planted and selfed. After eight generations of self-crossing, a healthy and plump sweet waxy corn i...

Embodiment 2

[0020] Embodiment 2: The hybrid breeding method in Example 1 can be replaced by a backcross breeding method, and the specific method of the backcross breeding method is as follows: the planting of sweet waxy corn is used as the basic material, and all the seeds have amylopectin. The waxy corn and sweet corn inbred lines are hybridized, and more than 20 plants are planted. The hybrid contemporary number is written as 1BC0, 2BC0. . . 20BC0, and this hybrid combination is used as the female parent, and then the original inbred line in this combination is used as the father. This, backcross, numbered 1BC1, 2BC1. .. 20BC1, planted more than 20 plants, backcrossed for 3 consecutive generations, namely BC3, and then selfed for one generation, planted more than 20 plants, and the numbers were written as 1BC3⨂, 2BC3⨂. .20BC3⨂, after selfing, select the sweet waxy corn kernels in a single ear containing sweet waxy kernels among 20 plants, and then sow 20 plants, and use the original inbr...

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Abstract

The invention provides a breeding method of sweet waxy corn, and relates to the technical field of corn breeding. The breeding method of the sweet waxy corn comprises the steps that seed selection is conducted through a hybridization transformation method, according to the seed selection through the hybridization transformation method, the sweet waxy corn can be hybridized with waxy corn, sweet corn and waxy sweet corn, the excellent characters of the waxy corn, the sweet corn and the waxy sweet corn are introduced into the sweet waxy corn, and an excellent sweet waxy corn inbred line with high combining ability is bred; the specific method comprises the following steps: S1, selecting healthy and full sweet waxy corn and common healthy and full corn kernels for hybridization to obtain primary selected seeds, then performing selfing on the primary selected seeds to obtain configured hybrids, S2, performing hybridization on the configured hybrids with waxy corn, sweet corn and waxy sweet corn to obtain first-generation hybrids, and performing planting selfing on the first-generation hybrids to obtain second-generation hybrids. After selfing for eight generations, selecting a healthy and full sweet waxy corn selfing line. According to the method, delicious sweet waxy corn cultivation and planting are stable, and the corn yield is high.

Description

technical field [0001] The invention relates to the technical field of corn breeding, in particular to a breeding method for sweet and waxy corn. Background technique [0002] The seeds of sweet waxy corn are intuitively translucent, jade-like, not wrinkled, and the top does not collapse. The sweetness in this corn has a honey flavor. The starch of corn has been detected as amylopectin (waxy). Relatively full, the gene code is tmnwx, tmn is the code of sweet waxy corn, and wx is the code of amylopectin, which is very similar to sweet and waxy, and it is not easy to distinguish intuitively. There are two ways to distinguish. The first is to pass the test cross with Shuangtian Waxy corn. If the grain of contemporary corn is waxy, then this corn is sweet and waxy, and if it is translucent, it is Shuangtian Waxy. The second is sugar measurement. Through testing, if the sugar content of the corn kernel exceeds 18%, it is sweet and waxy, otherwise it is sweet and waxy. [0003]...

Claims

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Application Information

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IPC IPC(8): A01H1/04A01H1/02A01H1/00
CPCA01H1/04A01H1/02A01H1/121A01H1/1245
Inventor 赫忠友赫晋范荣梁其颂
Owner HAINAN FREESITE SPROUT
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