Method for selectively breeding perennial coix lacryma-jobi for feeding by utilizing wild coix lacryma-jobi

A technology of wild coix and coix, which is applied in the direction of botany equipment and methods, applications, plant gene improvement, etc., can solve the problems of unseen selection and breeding of new forage grasses, achieve the effect of increasing selection pressure and selection efficiency, and accelerating the breeding process

Active Publication Date: 2017-11-07
四川康信科创农业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, in minority areas such as Liuzhou in Guangxi and Xishuangbanna in Yunnan, there is still the habit of picking w...

Method used

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  • Method for selectively breeding perennial coix lacryma-jobi for feeding by utilizing wild coix lacryma-jobi
  • Method for selectively breeding perennial coix lacryma-jobi for feeding by utilizing wild coix lacryma-jobi
  • Method for selectively breeding perennial coix lacryma-jobi for feeding by utilizing wild coix lacryma-jobi

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Embodiment 1, the propagation of seedling

[0043] In Jinghong City, Yunnan Province, in August every year, wild coix seeds are soaked in water for 10 days and then sown into seedling pots with a size of 10cm×10cm. After sowing, a small amount of phoxim granule is sprinkled to prevent cutworms and other underground pests. . When the seedlings grow to the "three leaves and one heart" stage, move them to the field, with a distance between plants and rows of 1m. At the booting stage, use a 200-mesh special pollen isolation net to isolate the plants in the plot to ensure sufficient freedom between and within the same plot. Pollination, prevent miscellaneous pollen. Mixed collection of plot seeds (if a certain type of coix seeds are collected in large quantities, the multiplication at this stage may not be carried out).

Embodiment 2

[0044] Embodiment 2, planting and screening of seedlings

[0045] In Jinghong City, Yunnan Province, in August every year, soak the Coix coix seeds expanded in the previous year in water for 10 days, and sow them in seedling pots with a size of 10cm×10cm ( figure 1 ), sprinkle a small amount of phoxim granules after sowing, prevent and control underground pests such as cutworms, record the number of seedlings every day after sowing, and select 30% of the single plants that emerge first. When the seedlings grow to the stage of "three leaves and one heart", they are transplanted to the field, and the spacing between plants and rows is 1m. Investigate the tiller number and plant height of each individual plant at the booting stage, multiply the plant height by the tiller number of each individual plant, and select the top 30% individual plants according to the score of each individual plant, and use a 200-mesh pollen isolation net for the selected individual plants Individual pl...

Embodiment 3

[0046] Embodiment 3, planting and screening of asexual seedlings

[0047] In Jinghong City, Yunnan Province, in January every year, the lines selected in the previous stage are harvested and the stems are propagated by cuttings. Each node is a seedling. When cutting, the distance between plants and rows is 10cm ( figure 2 ), the asexual seedlings were planted in the plot, the plot length was 10m, the width was 5m, and the distance between plants and rows was 1m. When the plants grew to 1m, they began to mow. After that, they were mowed once every 30 days, and the last time was mowed at the end of July. Cumulative grass yield of each line. Select the top 30% lines of cumulative grass yield.

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Abstract

The invention discloses a method for selectively breeding perennial coix lacryma-jobi for feeding by utilizing wild coix lacryma-jobi. The method comprises a step of carrying out two times of selection and identification on specific properties of sexual growth and clonal growth phases of selected single plants within one year; in Jinghong City, the specific properties are subjected to first-time selection at the sexual growth phase of the wild coix lacryma-jobi in a short daylight period of every year; after seeds are harvested, clonal propagation is rapidly carried out to expand a colony in a long daylight period; then the specific properties are subjected to second-time selection. The invention explores a novel way for resource utilization of the wild coix lacryma-jobi; the characteristic that the wild coix lacryma-jobi can be sexually propagated and can also be clonally propagated is utilized sufficiently to invent a two-phase selection method aiming at the specific single plants; weather characteristics of the Jinghong City and a crop growth and development law of short-daylight crops are combined to invent a selection method aiming at different target properties of a nutritional growth phase and a reproductive growth phase. Within one year, two times of selection of the target properties are carried out on the same single plant, so that the selection pressure and the selection efficiency are improved, and a breeding progress is accelerated.

Description

technical field [0001] The invention belongs to the field of plant variety breeding, and relates to a method for breeding perennial forage coix by using wild coix. Background technique [0002] Job's tears (Coix Lacryma-jobi L.) belongs to the Gramineae Coix genus in plant taxonomy, also known as grass beads, river valleys, barley, six millet, medicinal corn, barley rice, etc. 6,000-10,000 years of cultivation and domestication history. Coix is ​​traditionally used as a health food and a medicinal plant. Medical classics such as "Compendium of Materia Medica" and "Ben Cao Jing Shu" all have records of using coix to treat eczema, rheumatoid arthritis, and flat warts. In recent years, coix seed oil and coixenolide extracted from coix have been used to treat cancer. [0003] The genus Coix is ​​closely related to the genus Zea where the cultivated corn is located. This genus is mostly diploid and has 20 chromosomes. It is a cross-pollinated crop. It can be simply divided into...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 周树峰郭超曹墨菊刘海岚兰海荣廷昭高世斌付凤玲唐祈林卢艳丽
Owner 四川康信科创农业有限公司
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