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Emasculation method for compositae plants

A compositae plant and plant breeding technology, applied in botany equipment and methods, plant gene improvement, application, etc., can solve the problems of manual detasseling, small flowers, disregarding detasseling operation, etc., to restore pollination ability and The effect of fertilization

Inactive Publication Date: 2007-12-12
陈振志 +1
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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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  • Emasculation method for compositae plants

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Cross-breeding of plants of the genus Lactuca in the Asteraceae family:

[0012] In the spring of XXXX, the rhizomes of wild lettuce (male parent) were dug from the field, and the thick rhizomes were selected to be planted in the test field. Wild lettuce grows early and grows quickly. Straight lettuce (female parent) is sown in mid-April of the same year, with a plant spacing of 40cm. From the first ten days of July to the end of the month; the flowering period of lettuce (female parent): from the beginning of June to the end of July, 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 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...

Embodiment 2

[0014] Hybrid Breeding of Dandelion Plants in Asteraceae:

[0015] In the spring of XXXX, the rhizomes of wild dandelions (male parent) were dug from the field, 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 will be covered with plastic film at the vernal equinox of the second year to promote the early growth of wild dandelions. Hair, sow purple lettuce (female parent) in mid-April of the same year, with a plant spacing of 40cm, and the parents are originally on the same ridge, with a ridge spacing of 60cm, so as to facilitate hybridization operations. Among them, dandelion (male parent) is the flowering and seeding period in early summer; purple lettuce The flowering temperature of Chickweed (female parent) 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 bloomin...

Embodiment 3

[0017] Backcross:

[0018] Materials for testing: American lettuce (female parent), purple lettuce (male parent), emasculation time: as early as 6-7 o'clock, cut at the scissors on the calyx top of the female parent, cut off the corolla, kill Dead stamens, do not damage the calyx. At this time, the pollen is not yet mature, destroying the anthers, and losing the function of self-pollination. They are forced to pollinate the flowers and pollinate with purple lettuce. After 1 hour, the pistils will grow new filaments , stigma and petals, and return to the original shape, when the stigma becomes "Y" shape, it will be pollinated with the male parent immediately, and new seeds will be produced after fertilization, which is exactly the same as the plant produced by the cross.

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Abstract

A method for detasseling Compositae plants is characterized in adopting artificial detasseling through cutting corolla in plant breeding of Lactuca, Sonchus, and Taraxacum of Compositae. the method comprises cutting maternal calyces to remove corolla in early morning before florescence without injuring calyces, after 1 h, pistil grows out new thrumb, chapiter and petal, when the chapiter grows to Y shape, pollinating with male parent through cap bag at once to perform intergeneric crossing. Compared with present technology, the invention creates conditions for hybridization breeding of Lactuca, Sonchus, and taraxacum of Compositae due to the regrowth vigor and recuperability of their corolla, thrumb, and chapiter, and promotes the development of conventional breeding technology.

Description

technical field [0001] The present invention relates to a method for breeding Compositae plants, in particular to a method for detasselling plants of the genus Lactuca, Gestoria and Dandelion in Compositae using crown cutting and emasculation technology, which belongs to the A01H1 / 02 Hybridization method or equipment technical field. 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, the Chinese invention patent application with the publication number CN1799334 provides "a r...

Claims

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Application Information

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IPC IPC(8): A01H1/02
Inventor 陈振志赵瑞文
Owner 陈振志
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