Method of improving success rate of flax hybridization in arid areas

Abstract

The invention relates to a method of improving the success rate of flax hybridization in arid areas. The method is characterized in that the success rate of the flax hybridization in the arid areas can be significantly increased by means of low seeding density, irrigation treatment before castration, removal of all secondary branches without castration buds, and the like. On the other hand, the method provided by the invention also optimizes the specific ways such as sowing, emasculation and pollination; after the method is adopted, hybridization and hybrid fruit harvesting can be convenientlyand rapidly carried out, and non-hybrid fruits are prevented from being mixed during harvesting.

Description

technical field

[0001] The invention relates to the field of plant hybrid breeding, in particular to a method for improving the success rate of flax hybridization in arid areas. Background technique

[0002] With the rapid development of biotechnology, a large number of various advanced breeding technologies have been developed and applied, such as hybrid breeding, mutation breeding, polyploid breeding, haploid breeding, cell engineering breeding, genetic engineering breeding, etc. But traditional hybrid breeding is still the most important and most conventional breeding method.

[0003] In the field of flax breeding, hybridization by selecting parents is the most common breeding method, and a large number of excellent flax varieties have been optimized. However, in field hybrid breeding, it is often encountered that the success rate of artificial pollination is low or the seed setting rate is low due to weather and other reasons after successful pollination. The rate is l...

Examples

Embodiment 1

[0038] Crossbreed flax and produce hybrid fruit as follows:

[0039] 1. Sowing

[0040] Before sowing, apply basal fertilizer in the field, the basal fertilizer is compound fertilizer, the consumption is 12 kg / mu, the effective content of the compound fertilizer is 45%, N:P:K=1:1:1. 40 groups of hybrid combinations were designed in advance, and the hybrid parents were planted adjacent to each other as far as possible, and the parents were separated by ridges. On October 9th, the seeds were sown in a drill without leaving a ditch, and the effective sowing density was 2000 grains / m 2 .

[0041] 2. Field management

[0042] Irrigation: Use micro-spray irrigation once after sowing. Weeding: 60 grams of 56% sodium dimethyltetrachloride + 50 milliliters of 5% quizalofop-ethyl are used for weeding in the fir-type period.

[0043] 3. Hybridization

[0044] Pre-treatment: On the 7th day before the emasculation of the female parent, all the flax were irrigated. Irrigation method: d...

Embodiment 2

[0050] Crossbreed flax and produce hybrid fruit as follows:

[0051] 1. Sowing

[0052] Base fertilizer application: before sowing, apply base fertilizer in the field, the base fertilizer is composed of crushed flax cake and compound fertilizer, the consumption of the flax cake is 30 kg / mu, and the consumption of the compound fertilizer is 6 kg / mu, the compound fertilizer The effective content is 45%, N:P:K=1:1:1.

[0053] Open acupoints: the depth of the acupoints is 4-7cm, the distance between the acupoints is 10cm, and the row spacing is 20cm.

[0054] Sowing: Plant the same hybrid combination as in Example 1, wherein the hybrid parents are planted adjacent to each other as much as possible, and the parents are separated by ridges. Sow on October 9th, 10 seeds / every hole, sow evenly in described hole, effective sowing density 500 grains / square meter, do not cover soil after sowing.

[0055] 2. Field management

[0056] Irrigation: Use micro-spray irrigation once after s...

Embodiment 3

[0063] Crossbreed flax and produce hybrid fruit as follows:

[0064] 1. Sowing

[0065] Before sowing, base fertilizer is applied in the field. The base fertilizer is composed of pulverized flax cake and compound fertilizer. The consumption of the flax cake is 20 kg / mu, and the consumption of the compound fertilizer is 8 kg / mu. The effective content of the compound fertilizer is is 45%, N:P:K=2:1:1.

[0066] Open acupoints: the depth of the acupoints is 4-7cm, the distance between the acupoints is 10cm, and the row spacing is 20cm.

[0067] Sowing: Plant the same hybrid combination as in Example 1, wherein the hybrid parents are planted adjacent to each other as much as possible, and the parents are separated by ridges. Sow on October 9th, 8 seeds / hole, evenly sow in the hole, effective sowing density 400 seeds / square meter, do not cover soil after sowing.

[0068] 2. Field management

[0069] Irrigation: Use micro-spray irrigation once after sowing. Weeding: 60 grams of ...

technical field

[0001] The invention relates to the field of plant hybrid breeding, in particular to a method for improving the success rate of flax hybridization in arid areas. Background technique

[0002] With the rapid development of biotechnology, a large number of various advanced breeding technologies have been developed and applied, such as hybrid breeding, mutation breeding, polyploid breeding, haploid breeding, cell engineering breeding, genetic engineering breeding, etc. But traditional hybrid breeding is still the most important and most conventional breeding method.

[0003] In the field of flax breeding, hybridization by selecting parents is the most common breeding method, and a large number of excellent flax varieties have been optimized. However, in field hybrid breeding, it is often encountered that the success rate of artificial pollination is low or the seed setting rate is low due to weather and other reasons after successful pollination. The rate is l...

Examples

Embodiment 1

[0038] Crossbreed flax and produce hybrid fruit as follows:

[0039] 1. Sowing

[0040] Before sowing, apply basal fertilizer in the field, the basal fertilizer is compound fertilizer, the consumption is 12 kg / mu, the effective content of the compound fertilizer is 45%, N:P:K=1:1:1. 40 groups of hybrid combinations were designed in advance, and the hybrid parents were planted adjacent to each other as far as possible, and the parents were separated by ridges. On October 9th, the seeds were sown in a drill without leaving a ditch, and the effective sowing density was 2000 grains / m 2 .

[0041] 2. Field management

[0042] Irrigation: Use micro-spray irrigation once after sowing. Weeding: 60 grams of 56% sodium dimethyltetrachloride + 50 milliliters of 5% quizalofop-ethyl are used for weeding in the fir-type period.

[0043] 3. Hybridization

[0044] Pre-treatment: On the 7th day before the emasculation of the female parent, all the flax were irrigated. Irrigation method: d...

Embodiment 2

[0050] Crossbreed flax and produce hybrid fruit as follows:

[0051] 1. Sowing

[0052] Base fertilizer application: before sowing, apply base fertilizer in the field, the base fertilizer is composed of crushed flax cake and compound fertilizer, the consumption of the flax cake is 30 kg / mu, and the consumption of the compound fertilizer is 6 kg / mu, the compound fertilizer The effective content is 45%, N:P:K=1:1:1.

[0053] Open acupoints: the depth of the acupoints is 4-7cm, the distance between the acupoints is 10cm, and the row spacing is 20cm.

[0054] Sowing: Plant the same hybrid combination as in Example 1, wherein the hybrid parents are planted adjacent to each other as much as possible, and the parents are separated by ridges. Sow on October 9th, 10 seeds / every hole, sow evenly in described hole, effective sowing density 500 grains / square meter, do not cover soil after sowing.

[0055] 2. Field management

[0056] Irrigation: Use micro-spray irrigation once after s...

Embodiment 3

[0063] Crossbreed flax and produce hybrid fruit as follows:

[0064] 1. Sowing

[0065] Before sowing, base fertilizer is applied in the field. The base fertilizer is composed of pulverized flax cake and compound fertilizer. The consumption of the flax cake is 20 kg / mu, and the consumption of the compound fertilizer is 8 kg / mu. The effective content of the compound fertilizer is is 45%, N:P:K=2:1:1.

[0066] Open acupoints: the depth of the acupoints is 4-7cm, the distance between the acupoints is 10cm, and the row spacing is 20cm.

[0067] Sowing: Plant the same hybrid combination as in Example 1, wherein the hybrid parents are planted adjacent to each other as much as possible, and the parents are separated by ridges. Sow on October 9th, 8 seeds / hole, evenly sow in the hole, effective sowing density 400 seeds / square meter, do not cover soil after sowing.

[0068] 2. Field management

[0069] Irrigation: Use micro-spray irrigation once after sowing. Weeding: 60 grams of ...

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