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Forage grass maize production process

A production method and technology of forage corn, applied in botany equipment and methods, plant genetic improvement, horticulture, etc., can solve problems such as low seed setting rate and difficulty in direct hybridization, and achieve strong stress resistance and cold resistance Effect

Inactive Publication Date: 2007-03-14
SICHUAN AGRI UNIV
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Problems solved by technology

[0003] However, it is quite difficult to directly hybridize corn with tetraploid perennial corn varieties, and the seed setting rate is extremely low, so it is impossible to directly apply it to production

Method used

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  • Forage grass maize production process

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Effect test

Embodiment 1

[0025] In the autumn of 2004 in Yunnan 6667m 2 Seeds of forage corn SAUMZ1 are produced on the land in the land, and the seed production area adopts spatial isolation, and the space isolation distance is 500 meters, that is, no corn is planted at a distance of 500 meters around the seed production area; because the male parent tetraploid perennial maize species 9475 The flowering period is about one month, so the female parent corn-tetraploid perennial corn variety substitution line 068 was sown in stages from early September, and a batch was sown every 5-7 days. The planting density of the female parent was 2780 plants / 666.7m 2 , planted in wide and narrow rows, the wide row spacing is 120cm, the narrow row spacing is 80cm, and the plant spacing is 30cm; manual emasculation is used, and all the tassels of the female parent 068 are removed during the tasseling stage; the male parents are planted together, and the plant row spacing is 80×80cm. The paternal tetraploid perennia...

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Abstract

The invention relates to a method for producing forage grass corn hybrid. Wherein, it uses the corn-tetraploid corn substitution system 068 as mother, uses the corn sibling species tetraploid corn 9475 as father to cross to obtain the forage grass corn SAUMZ1. And it adjusts the seeding time, cuts capillament, adjusts the planting density, emasculates from the mother, adjusts the flower period, pollinates artificially, and harvests at right time. The invention can improve yield and quality.

Description

technical field [0001] The invention belongs to the field of heterosis utilization, and in particular relates to a production method of forage corn. Background technique [0002] Tetraploid perennial maize species (Zea perennis, 2n=40) is a wild relative of maize (Zea mays, 2n=20), which has excellent characteristics such as cold resistance, disease resistance, and waterlogging resistance. It is perennial, with well-developed root system and tillering It has the advantages of strong ability and other advantages; and corn has the reputation of "the king of feed" because of its high biological yield and nutritional value for feeding. Using it to hybridize with tetraploid perennial corn can combine the excellent characteristics of the two, and it is expected to breed and produce A breakthrough new variety of forage grass that is perennial, has strong tillering ability, strong stress resistance, high biological yield and excellent quality. [0003] However, direct hybridization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04A01G1/00
Inventor 荣廷昭唐祈林黄玉碧潘光堂张明强杨克诚曹墨菊谭登峰高世斌胡尔良兰海刘坚
Owner SICHUAN AGRI UNIV
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