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Method for producing cytoplasmic male sterility of fresh corn silk

A technology of male sterility and production methods, applied in botany equipment and methods, horticulture, applications, etc., can solve the problems of waste of beneficial plant resources, backward production and processing methods, and less luster, so as to reduce production costs and labor input , the effect of increasing yield and hybrid seed yield

Inactive Publication Date: 2011-03-16
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, harvested and processed in summer and autumn, dried or dried, the harvested corn whiskers are shriveled, less glossy, low in nutritional value, high in impurities, and degraded in use quality.
Due to the backwardness of production and processing methods, corn silk, which has health care and medicinal value, is a large amount of beneficial plant resources wasted

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In this example, an excellent corn variety "Yuyu 22" was selected to produce fresh corn silks in large quantities in Yangling, Shaanxi.

[0039] Specifically include the following steps:

[0040] The first step is to select an excellent corn variety "Yuyu 22" (National Approved Jade: 20000012) (variety right number: CNA19990006.X) suitable for the production of corn silk. This variety has the characteristics of thick filaments, long filaments, high yield and good quality.

[0041]"Yuyu 22" is a large-ear corn hybrid made by the Maize Research Institute of Henan Agricultural University using the introduced line "Zong 3" and the self-selected line "Yu 87-1". It has high yield, high quality, disease resistance, Wide fit, large spike and other characteristics [Liu Zonghua, Chen Weicheng, Luo Fuhe et al. Breeding research on large spike-type corn hybrid Yudan 8703 J. Journal of Henan Agricultural University, 1997, 31 (addition): 1-4]. At the same time, they bred the female...

Embodiment 2

[0048] Embodiment 2: The present embodiment produces fresh corn whiskers in Yangling, Shaanxi in large quantities with the corn hybrid "Shendan No. 10", and it specifically includes the following steps:

[0049] The first step is to select an excellent corn variety "Shendan No. 10" (National Examination Jade: 990003) (variety right number: CNA20010072.6) suitable for the production of corn silk. This variety has the characteristics of thick filaments, long filaments, high yield and good quality.

[0050] In the second step, the conventional corn hybrid "Shendan 10" suitable for corn silk production was transformed into a sterile hybrid "CMS Shendan 10".

[0051] (A) Sterile gene transfer: the female parent Q1261 of the conventional corn hybrid "Shendan 10" was used as the male parent, and the C-type cytoplasmic sterile material was used as the female parent to perform hybridization to obtain the first generation of hybrid F1 sterile seeds;

[0052] (B) Backcross: plant the F1...

Embodiment 3

[0061] Example 3: In this example, the sterile corn hybrid "CMS Shendan No. 10" (National Examination: 990003) (variety right number: CNA20010072.6) and common corn hybrid Nongda 108 (National Examination: 2001002) were used A large amount of fresh corn silk is produced in Yangling, Shaanxi, which specifically includes the following steps:

[0062] The first step is to select an excellent corn variety "CMS Shendan 10" suitable for corn silk production. This variety has the characteristics of thick filaments, long filaments, high yield and good quality.

[0063] In the second step, the conventional corn hybrid "Shen Dan No. 10" suitable for corn silk production was transformed into a sterile hybrid "CMS Shen Dan No. 10" (same as Example 2).

[0064] The third step is the selection of the isolation area. The isolation adopts two methods of time and space isolation. Time segregation requires that the difference between the early sowing time of other corn fields and the corn sil...

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PUM

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Abstract

The invention discloses a cytoplasmic male sterility production method for fresh corn silk. The method selects corn hybrids with thick filament, large filamentous scale and high yield and converts the corn hybrids into sterile hybrids; an isolation area is selected by adopting a time-space isolation mode; the selected male-sterile hybrids and fertile corn hybrids are sown pro rata by stages; after filaments of the early-sown male-sterile hybrids burst into bract for 5 to 10 days, the fresh corn silk is harvested on plants of the male-sterile hybrids; and after the corn silk is harvested on the male-sterile hybrids, pollen allowing the male-sterile hybrids to normally fruit is supplied by male flowers of the late-sown fertile corn hybrids. The method has the advantages that the method can produce the fresh corn silk with good quality and high yield, and reduce the production cost and labor input for the corn silk.

Description

technical field [0001] The invention belongs to the field of plant production methods, and relates to a production method of health food and Chinese medicinal materials, in particular to a production method of cytoplasmic male sterility of fresh corn silk. Background technique [0002] Corn silk (com silk or stigma maydis), also known as dragon silk or stigma maydis in traditional Chinese medicine, corn silk or stigma maydis "Southern Yunnan Materia Medica", maize pistil "Modern Practical Chinese Medicine", stick hair "Hebei Medicinal Materials", etc. It is the style and flower head of corn of the grass family Zea genus, also known as filament, and is one of the commonly used medicinal materials included in the "Standards of Medicinal Materials of the Ministry of Health of the People's Republic of China" (1985 edition one). Corn whiskers are often assembled into loose clusters, and the styles are long and thin filamentous or whisker-like, with a length of more than 30 cm and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01H1/02
Inventor 吴权明南文华毛建昌袁公选杨金慧何应川
Owner NORTHWEST A & F UNIV
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