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Novel sweet-waxy corn and utilization method thereof

The technology of sweet and waxy corn and waxy corn is applied in the field of new sweet and waxy corn and its utilization, which can solve the problems of less seed content, low germination rate, weak seedling vigor, etc. Seedlings grow robustly

Pending Publication Date: 2021-11-23
SHENYANG JINSEGU SPECIAL CORN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also some disadvantages, such as the problem of super sweet and waxy (sh2wx): one is the appearance of the ears of this sweet and waxy grain mixture, especially when it is processed into frozen fresh corn, the sweet grains in it are in the form of blisters, When processed into vacuum-packed corn ears, it is also easy to produce sweet kernels collapse, which is quite different from the waxy kernels on the same ear, and the product appearance is not good; the second is that the sweet corn parents must be double recessive sweet corn, which increases the double recessive sweet corn The breeding process of recessive sweet corn inbred lines; the third is the double recessive sweet corn parent breeding and sweetening Waxy corn seed production brings difficulties

Method used

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  • Novel sweet-waxy corn and utilization method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1, sweet and waxy type fresh corn and hybrid breeding

[0042] 1. Artificial mutagenesis of sweet and waxy fresh corn

[0043] Utilize the existing artificial mutagenesis technology (see Zhou Hongsheng, Maize Seed Encyclopedia, China Agricultural Press, 2000, 217-219. The probability of recessive mutation is about 0.1%), mutagenesis with ethyl methanesulfonate (EMS) The pollen of waxy corn Shen Nuo 3 (Liao Nong Shen Zheng Zi No. 490) was treated with the agent. The specific method is to mix EMS and pollen 10 times the volume of pollen for pollen mutagenesis treatment, shake it every 3 minutes, and after 45 minutes of treatment, apply it on the filaments that have been bagged in advance with a brush, pollinate 30 ears, and then Bagged and isolated to obtain the first generation (M1) seeds of mutagenesis.

[0044] The seeds of the first generation of mutagenesis (M1) harvested in the previous year were sown and selfed to obtain the ears of the second generati...

Embodiment 2

[0056] Embodiment 2, Sweet waxy plus waxy type fresh corn and hybrid breeding

[0057] 1. Artificial mutagenesis of sweet and waxy fresh corn

[0058] Utilizing the existing artificial mutagenesis technology (see Zhou Hongsheng, Compendium of Maize Seeds, China Agricultural Press, 2000, 217-219;), the waxy corn Jingke Nuo 2000 was treated with ethyl methanesulfonate (EMS) mutagen (National Examination Jade 2010014) pollen. The specific method is to mix EMS and pollen 10 times the volume of pollen for pollen mutagenesis treatment, shake it every 3 minutes, and after 45 minutes of treatment, apply it on the filaments that have been bagged in advance with a brush, pollinate 30 ears, and then Bagged and isolated to obtain the first generation (M1) seeds of mutagenesis.

[0059] 2. Phenotype Identification and Tasting Validation

[0060] The seeds (M1) harvested in the previous year were sown and selfed to obtain the ears of the 2nd generation of mutagenesis (M2). According to ...

Embodiment 3

[0071] Embodiment 3. Breeding of new varieties of sweet and waxy type fresh corn

[0072] 1. Breeding of sweet and waxy fresh corn inbred lines

[0073] Using the existing cross-breeding technology, the sweet-waxy type fresh corn inbred line SW60 was used as the non-recurrent parent, and Shennuo 350 (the male parent of Shennuo 7) was used as the recurrent parent for backcrossing. First, SW60 was used as the male parent to cross, and from the second generation, Shennuo 350 was used as the male parent for backcrossing. After 5 rounds of trans-breeding, sweet and waxy fresh corn inbred lines were bred. The grains of this series are sunken, fuller than super sweet corn, the endosperm is powdery, non-waxy, opaque, non-shrinking, and the epidermis is dull and wrinkled. After fresh food tasting verification, it has a sweet and waxy taste. Obtain sweet waxy type fresh corn inbred line SW350.

[0074] 2. Preparation of sweet and waxy fresh corn hybrids

[0075] Sweet and waxy inbr...

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Abstract

The invention relates to a novel sweet-waxy corn and a utilization method thereof. According to the invention, sweet-waxy mutant grains are used as original materials, a sweet-waxy fresh corn inbred line is bred, the novel sweet-waxy corn is obtained, and each grain of the sweet-waxy corn has the sweet and waxy characteristics; the identification standard of the phenotype of the sweet-waxy mutant grains is that the grains are sunken, are fuller than sweet corns, have farinaceous endosperm and are non-waxy, non-transparent, non-crumpled, lusterless in epidermis and crumple-free, and the sweet-waxy fresh corn is sweet and waxy in a real sense, that is, each grain has the sweet and waxy characteristics in a fresh eating period. Due to the fact that the inclusion of sweet-waxy fresh corn seeds is greatly increased compared with that of super-sweet corn, especially compared with that of double-recessive super-sweet corn, the germination rate is high, the germination potential is high, emergence is easy, seedlings are robust, and the problems that the double-recessive super-sweet corn and the super-sweet corn are low in germination rate, low in emergence rate and low in seedling protection rate and seedlings are thin and weak are solved.

Description

technical field [0001] The invention relates to the field of crop breeding, in particular to a novel sweet waxy corn and its utilization method. Background technique [0002] Fresh corn refers to the type of corn that is picked and eaten at the milk ripening stage or processed into canned vegetables. Internationally, fresh corn is divided into ordinary sweet corn (su), enhanced sweet corn (suse), super sweet corn (sh2), waxy corn (wx), double recessive common sweet corn plus waxy corn (suwx), double recessive corn The main genetic types are super-sweet plus waxy corn (sh2wx) and triple-recessive normal sweet plus super-sweet plus waxy corn (su1sh2wx). Different types have different advantages and disadvantages and different edible and processing purposes. [0003] Ordinary sweet corn (sweet corn) is controlled by the su1 or su2 recessive mutation gene. Since it only contains soluble polysaccharides (wsp) and does not contain starch, the sugar content in the milking stage i...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/08
CPCA01H1/02A01H1/08
Inventor 史振声孙淑凤张喜华王健韩金玲杨敏
Owner SHENYANG JINSEGU SPECIAL CORN
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