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Castration method for compositae plants

A technology of Compositae and plant breeding, applied in the fields of botanical equipment and methods, plant genetic improvement, application, etc., can solve the problems of artificial emasculation, difficulty in artificial emasculation, small flowers, etc., and restore pollination ability and fertilization. effect of ability

Inactive Publication Date: 2016-01-06
吴光平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

What's more, some varieties of the genus Bean (such as French bean and runner bean), the style of their pistils is entwined by the stamen sheath like a spring, which brings greater difficulties to artificial detasseling
In addition, plants similar to the genus Lactuca have small flowers and are difficult to manually detassell, let alone a large number of operations
At present, there is no report on the artificial detasseling method using glume clipping and detasseling technology in the breeding of Compositae plants, especially the use of glume clipping in the breeding of some plants of the genus Lactuca, Gescuinus, and Dandelion in the family Asteraceae has not been found. The report of the artificial detasseling method of detasseling technology has caused those skilled in the art to basically not consider using the clipping detasseling technique to complete the detasseling operation of some plant breeding of Lactuca, Gescuinus, and Dandelion in the Compositae family.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Cross-breeding of plants of the genus Lactuca in the Asteraceae family:

[0011] In spring, the rhizomes of wild lettuce (male parent) are dug from the wild, and the thick rhizomes are selected and planted in the experimental field. Lettuce grows early and grows quickly. Sow lettuce (female parent) in mid-April of the same year, with a plant spacing of 40cm. Early to late month; Straight lettuce (female parent) flowering period: early June to late July, flowering time is from 7:00 am to 15:00 am. Before 7 o'clock in the morning, when the female parent is not blooming, cut off the corolla at the scissors on the top of the female parent's calyx without damaging the calyx. After 1 hour, the pistil will re-grow new filaments, stigmas and petals , and restore to the original shape, when the stigma becomes "Y" shape, it will be bagged with the male parent immediately for pollination, inter-genus hybridization and two-generation self-crossing will be carried out, and a suitab...

Embodiment 2

[0013] Hybrid Breeding of Dandelion in Asteraceae:

[0014] In spring, the rhizomes of wild dandelions (male parent) were dug from the wild, and the thick rhizomes were selected and planted in the test field. In order to adjust the flowering period, the wild dandelions in the test field were covered with plastic film at the vernal equinox of the second year to promote the early growth and rapid growth of wild dandelions. Sow purple lettuce (female parent) in mid-April of the same year, with a plant spacing of 40cm, and the parents are on the same ridge with a ridge distance of 60cm, so as to facilitate hybridization operations. Among them, dandelion (male parent) is the flowering and seeding period in early summer; purple lettuce (Female parent) The flowering temperature is 24°C. The flowering period is about one month, and the flowering time is from 7:00 am to 15:00 am. Before 7 o'clock in the morning, when the female parent is not blooming, cut off the corolla at the scisso...

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PUM

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Abstract

Provided is a castration method for compositae plants. In breeding of compositae lactuca, sonchus taraxacum plants, manual corolla cutting castration is employed, namely, in the morning, when a flower is not bloomed, cutting is carried out at a top of a calyx of a female parent, a corolla is cut, the calyx cannot be damaged, after 1h, gynoecia send forth new filaments, stigmas and petals, and an original shape is recovered. When the stigmas are Y shaped, bagging pollination with male parents is carried out immediately and intergeneric hybridization is carried out.

Description

technical field [0001] The invention relates to a method for breeding Compositae plants, in particular to a method for detasselling plants of the Compositae genus Lactuca, Gestoria and Dandelion by using crown-cutting and detasseling techniques. Background technique [0002] In the process of producing hybrids, detasseling is an important step. There are many methods of detasseling, such as stamen clipping, corolla stripping, warm soup detasseling, hot gas detasseling, chemical agent detasseling and wheat detasseling. Guan Qixiong method and so on. The detasseling methods of various crops are often different due to the different structure of the flowers. In the hybridization of cereal crops, methods such as glume detasseling, glume clipping and bagging detasseling are often used. For example, "A Method of Rice Hybridization by Cutting Glutes and Herbs to Kill Males", the specific steps of the method are: sexually hybridize between rice varieties, and hybridize the unflowere...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 吴光平
Owner 吴光平
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