Sweet corn breeding method

Abstract

The invention discloses a sweet corn breeding method. The method comprises the following steps: (1) hybridizing Jinyutian No. 1 as a female parent and Qiule 368 as a male parent to obtain an F1 generation; (2) selecting the F1 generation with excellent characters, and selfing to obtain an F2 generation; and (3) repeating the step (2) for 4-5 times, and selfing to obtain a bred selfing line. Compared with the prior art, the method disclosed by the invention has the following beneficial effects: (1) the sweet corn has thin skin, much juice, freshness, sweetness, crispness, tenderness, high palatability and excellent quality; (2) the sweet corn has high adaptability and can survive well in a high-temperature drought environment; (3) the sweet corn has high disease resistance and has resistance to fusarium stem rot, fusarium ear rot, northern leaf blight, southern leaf blight and head smut; (4) the yield is high; and (5) by increasing the application of a nitrogen fertilizer, the sucrose content in the sweet corn is increased, and the palatability is improved.

Description

technical field

[0001] The invention relates to the technical field of corn breeding, in particular to a sweet corn breeding method. Background technique

[0002] Sweet corn originated from the American continent and carries a mutation gene related to carbohydrate metabolism. According to the genetic type and endosperm characteristics, sweet corn is divided into ordinary sweet corn, super sweet sweet corn (also known as fruit sweet corn) and enhanced sweet corn. corn. Sweet corn is mainly used for fresh ear consumption and fresh-keeping processing. Sweet corn is rich in nutrition and unique in flavor. It is a new four-element economic crop integrating grain, feed, fruit and vegetables. The development of planting scale has surpassed that of any kind of vegetables. value and industrial production.

[0003] The breeding work of sweet corn is generally combined with conventional breeding, the sweet quality gene of sweet corn is introduced into the material with good genetic ...

Examples

Embodiment 1

[0028] Breeding process

[0029] (1) Jinyutian 1 with a plant height of 180-210cm, ear length > 19cm, and total soluble sugar > 8% was used as the female parent, and Qiule 368 with a plant height of 290-300cm and ear length > 18cm was used as the male parent, and the planting density For 3000 plants / mu, F1 generation seeds were obtained through artificial pollination;

[0030] (2) Plant F1 generation seeds, the planting density is 4000 plants / mu, select fruit peel ratio20cm, bald length10%, to Fusarium stem rot, Fusarium ear rot disease, large leaf spot, small spot, and head smut are all resistant to selfing to obtain F2 generation seeds;

[0031] (3) Step (2) was repeated continuously for 4 generations to obtain inbred lines with stable properties.

[0032] During the breeding process, fertilization treatment is required, 40kg per mu, and the applied fertilizer includes the following components in mass parts: 25 parts of coconut soil, 45 parts of vermicompost, 12 parts of c...

Embodiment 2

[0039] The seed selected and bred at last of embodiment 1 is carried out trial planting, and each index characteristic is as follows:

[0040] 1. Output performance

[0041] The seeds finally bred in Example 1 were tested. The control group was Jinyutian No. 1. The average yield per mu in 2015-2016 was 824.8% kg. 4.99%.

[0042] 2. Characteristics

[0043] (1) Morphological characteristics:

[0044] At the seedling stage, it grows strong, with a strong growth potential. The plant height is 232.5cm, the total number of leaves is 20, the ear length is 20.8cm, the bald head length is 0.89cm, the 100-grain weight is 34.8g, and the ear is cylindrical.

[0045] (2) Cultivation characteristics:

[0046] According to the farmers who planted it, the seeds have a high germination rate, strong germination potential, resistance to overturning, and strong environmental adaptability.

[0047] (3) Quality

[0048] Peel ratio 4.6%, sucrose content 11.7%

[0049] (4) Resistance

[0050...

technical field

[0001] The invention relates to the technical field of corn breeding, in particular to a sweet corn breeding method. Background technique

[0002] Sweet corn originated from the American continent and carries a mutation gene related to carbohydrate metabolism. According to the genetic type and endosperm characteristics, sweet corn is divided into ordinary sweet corn, super sweet sweet corn (also known as fruit sweet corn) and enhanced sweet corn. corn. Sweet corn is mainly used for fresh ear consumption and fresh-keeping processing. Sweet corn is rich in nutrition and unique in flavor. It is a new four-element economic crop integrating grain, feed, fruit and vegetables. The development of planting scale has surpassed that of any kind of vegetables. value and industrial production.

[0003] The breeding work of sweet corn is generally combined with conventional breeding, the sweet quality gene of sweet corn is introduced into the material with good genetic ...

Examples

Embodiment 1

[0028] Breeding process

[0029] (1) Jinyutian 1 with a plant height of 180-210cm, ear length > 19cm, and total soluble sugar > 8% was used as the female parent, and Qiule 368 with a plant height of 290-300cm and ear length > 18cm was used as the male parent, and the planting density For 3000 plants / mu, F1 generation seeds were obtained through artificial pollination;

[0030] (2) Plant F1 generation seeds, the planting density is 4000 plants / mu, select fruit peel ratio20cm, bald length10%, to Fusarium stem rot, Fusarium ear rot disease, large leaf spot, small spot, and head smut are all resistant to selfing to obtain F2 generation seeds;

[0031] (3) Step (2) was repeated continuously for 4 generations to obtain inbred lines with stable properties.

[0032] During the breeding process, fertilization treatment is required, 40kg per mu, and the applied fertilizer includes the following components in mass parts: 25 parts of coconut soil, 45 parts of vermicompost, 12 parts of c...

Embodiment 2

[0039] The seed selected and bred at last of embodiment 1 is carried out trial planting, and each index characteristic is as follows:

[0040] 1. Output performance

[0041] The seeds finally bred in Example 1 were tested. The control group was Jinyutian No. 1. The average yield per mu in 2015-2016 was 824.8% kg. 4.99%.

[0042] 2. Characteristics

[0043] (1) Morphological characteristics:

[0044] At the seedling stage, it grows strong, with a strong growth potential. The plant height is 232.5cm, the total number of leaves is 20, the ear length is 20.8cm, the bald head length is 0.89cm, the 100-grain weight is 34.8g, and the ear is cylindrical.

[0045] (2) Cultivation characteristics:

[0046] According to the farmers who planted it, the seeds have a high germination rate, strong germination potential, resistance to overturning, and strong environmental adaptability.

[0047] (3) Quality

[0048] Peel ratio 4.6%, sucrose content 11.7%

[0049] (4) Resistance

[0050...

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