Cultivation method for flax hybridization by using male sterile of flax

A technology of male sterility and breeding method, which is applied in the directions of botanical equipment and methods, application, and plant genetic improvement, and achieves the effects of simple reproduction, low production cost, and wide range of recovery sources.

Inactive Publication Date: 2008-08-20
GANSU ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of large-scale production of flax F1 hybridization, and to provide a cultivation method for producing hybrid flax using the male sterile line of flax

Method used

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  • Cultivation method for flax hybridization by using male sterile of flax
  • Cultivation method for flax hybridization by using male sterile of flax
  • Cultivation method for flax hybridization by using male sterile of flax

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Embodiment Construction

[0012] Now the technical scheme of the present invention will be further described by the following examples.

[0013] After mutagenesis by antibiotics, male sterile mutants were systematically selected. Plant the antibiotic-treated Longya No. 9 seed M1 in the field, search for male sterility at the flowering stage, and harvest individual sterile plants found; plant M2 in rows, identify the isolated sterile plants, and select excellent male sterile plants. Breed a single plant, perform artificial bagging when the fertility is restored, self-fertilize, and harvest a single plant; M3 is planted in rows; M4——M6 are identified and selected at different ecological points (see Tables 1 and 2) respectively. Fertility identification was carried out in the low temperature interval, and sterility identification and selection were carried out in the low temperature interval. Selection was carried out to select two sterile lines with better fertility conversion and excellent comprehensive...

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Abstract

The invention relates to a cultivating method to utilize flax male sterility to hybrid flax, belonging to the field of crop cultivation. Heterosis utilization is an effective way to improve the yield of flax, but the main obstacle in prior suitable heterosis utilization is the lack of excellent flax male sterile line. The invention is characterized in that, excellent temperature sensitive sterile line successfully selected and bred through antibiotic mutation is utilized for hybrid breeding and hybrid production; the cross combination with obvious yield heterosis is bred; the method to produce sterile line at high temperature area and produce hybrid F1 seed together with a restore line at low temperature area is invented. The cultivating method has the advantages of simple propagation, low production cost, wide sterile line restoring sources and obvious heterosis.

Description

technical field [0001] The invention relates to the field of crop cultivation, in particular to a method for hybrid cultivation of flax. Background technique [0002] The F1 generation of flax varieties has 25-40% or even higher heterosis, and the use of heterosis will be an effective way to increase the yield of flax. Flax is a self-pollinating crop, and the male sterile line is the key to the utilization of heterosis. In 1921, Bateson and Cairdner identified the flax cytoplasmic male sterile line for the first time, but the petals of this sterile line cannot be fully expanded, and cross-pollination is hindered. , is difficult to be used in seed production, and has no direct utilization value in production. Thereafter, there are reports of flax cytoplasmic male sterile lines with fully expanded petals (Kumar and Singn, 1970; Thomsom, 1977), but in the use of hybrids, There are no reports of success. In 1973, Chen Hongshan and others in my country discovered dominant genit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 党占海张建平
Owner GANSU ACAD OF AGRI SCI
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