Crossbreeding method for low-stem maize

A hybrid breeding and corn technology, applied in the field of corn, can solve the problems of difficulty in further increasing yield, high production risk, and low yield, and achieve the effects of strong stress resistance, stable yield, and high yield

Active Publication Date: 2018-03-30
河北理查德农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past ten years, my country has bred many high-stalk, large-panicle, sparsely planted late-maturing varieties with high yield per plant, but the actual yield in production is low, the production risk is also high, and the production density is mostly limited to Below 4000 plants / mu, it is difficult to further increase the yield

Method used

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  • Crossbreeding method for low-stem maize

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Female parent cultivation: Select corn with a plant height of less than 1.5m, small tassels, few branches, long ears, long grains, as the female parent provenance, and after 5 generations of self-breeding, it will be used as the female parent of corn hybrids;

[0027] Male parent cultivation: select the male parent with a plant height of less than 2m, large tassels, sufficient pollen, long spikes, long grains, and plant type as the male parent. After 5 generations of self-breeding, it will be used as the male parent of maize hybrids;

[0028] Fusion cultivation: plant the female parent and the male parent, harvest the pollen of the male parent plant to artificially pollinate the female parent plant; after multi-point trial planting and screening, dwarf corn seeds are obtained;

[0029] The 3 leaves of the upper ear of maize from the female parent and the male parent are short, wide and flat, and the leaves on the ear are upright or phimosis;

[0030] The plant type of m...

Embodiment 2

[0034] Female parent cultivation: Select corn with a plant height of less than 1.5m, small tassels, few branches, long ears, long grains, as the female parent provenance, and after 5 generations of self-breeding, it will be used as the female parent of corn hybrids;

[0035] Male parent cultivation: select the male parent with a plant height of less than 2m, large tassels, sufficient pollen, long spikes, long grains, and plant type as the male parent. After 5 generations of self-breeding, it will be used as the male parent of maize hybrids;

[0036] Fusion cultivation: plant the female parent and the male parent, harvest the pollen of the male parent plant to artificially pollinate the female parent plant; after multi-point trial planting and screening, dwarf corn seeds are obtained;

[0037] The 3 leaves of the upper ear of maize from the female parent and the male parent are short, wide and flat, and the leaves on the ear are upright or phimosis;

[0038] The plant type of m...

Embodiment 3

[0042] Female parent cultivation: Select corn with a plant height of less than 1.5m, small tassels, few branches, long ears, long grains, as the female parent provenance, and after 5 generations of self-breeding, it will be used as the female parent of corn hybrids;

[0043] Male parent cultivation: select the male parent with a plant height of less than 2m, large tassels, sufficient pollen, long spikes, long grains, and plant type as the male parent. After 5 generations of self-breeding, it will be used as the male parent of maize hybrids;

[0044] Fusion cultivation: plant the female parent and the male parent, harvest the pollen of the male parent plant to artificially pollinate the female parent plant; after multi-point trial planting and screening, dwarf corn seeds are obtained;

[0045] The 3 leaves of the upper ear of maize from the female parent and the male parent are short, wide and flat, and the leaves on the ear are upright or phimosis;

[0046] The plant type of m...

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Abstract

The invention discloses a crossbreeding method for low-stem maize. The maize with plant height which is 1.5m or lower, small tassel, few branches, long spike and long grain is selected as a female provenance, and a maize with plant height 2m or lower, large tassel, sufficient pollen, long spike and long grain is selected as a male provenance, and therefore, a maize plant obtained by hybridizationis short, is suitable for high-density plantation and has the characteristics of high maize yield, stable yield, high disease resistance, resistance to lodging and high stress resistance.

Description

technical field [0001] The invention relates to the field of corn, in particular to a method for cross breeding of dwarf corn. Background technique [0002] With the gradual improvement of agricultural production conditions and the continuous improvement of the breeding level, the yield level of corn is also increasing. In the past ten years, my country has bred many high-stalk, large-panicle, sparsely planted late-maturing varieties with high yield per plant, but the actual yield in production is low, the production risk is also high, and the production density is mostly limited to Below 4000 plants / mu, it is difficult to further increase the yield. [0003] At present, the average yield of corn in the United States is 533kg / mu, while the average yield of corn in my country is only 333kg / mu. The corn production in the United States is much higher than that in my country. The main reason is that the United States has increased the number of colonies by increasing the planti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 贾银锁李良英张鑫王建锋贾璇纪小雨
Owner 河北理查德农业科技有限公司
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