Breeding technology for triploid hydrid cucumber

A technology of hybrids and cucumbers, applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve problems such as stress resistance, poor adaptability, nutrient consumption, and inability to meet large-scale production and different seasons. , to achieve high-quality results

Inactive Publication Date: 2003-11-19
隆兴成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diploid hybrid cucumbers have made progress in yield, but they have no advantage in quality. The development of fruit seeds consumes a lot of nutrients, which reduces the nutritional content of the edible part, makes the taste and taste worse, and affects the cucumber in the vegetable market. proportion
There are existing breeding methods of asexual hybridization, and the bred all-female varieties do not have the formation of seeds, which can improve the quality of cucumbers, but such varieties are limited by a single genetic composition, and have poor stress resistance and adaptability, so they cannot meet the needs of large populations. Area, demand for production species in different seasons

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 2

[0024] The parent is the heat-resistant inbred line BE, and the local variety Erzaozi. In 1998, the tetraploid BE-M(12)-2 of BE was bred. In 1999, BE-M(12)-2 was used as the female parent. The hybrid line 99-2 was crossed with Erzaozi (male parent). In 2000, 99-2 was compared with (BE×Erzaozi) in the same field, and the sowing date was March 15. The results of the comparison test were:

[0025] (1) Harvesting period: 99-2 is from May 21st to August 6th, the number of melon fruiting days is 76 days, (BE×Erzaozi) is from May 19th to July 10th, and the fruiting period is 51 days sky.

[0026] (2) Yield per unit area: 99-2 plot is equivalent to 5,750 kg per mu, and (BE×Erzaozi) equivalent yield is 4,040 kg.

[0027] (3) Disease resistance: the diseased leaf rate of downy mildew in late May: 99-2 is 15%. (BE×Erzaozi) is 28% Example 3

example 3

[0028] The parents are the regular local variety Baishui melon and the local fine variety Baisitiao. In 1998, the tetraploid B-M-(27)-2 of Baisia ​​melon was bred. In 1999, B-M-(27)-2 was crossed with Baisitiao The hybrid line 99-3 was obtained. In 2000, 99-3 was compared with (white thorn melon x white silk strips) in the same field. The sowing date was March 20. The results of the comparison test were:

[0029] (1) Harvesting period: 99-3 is from May 15th to July 22nd, and the number of melon fruiting days is 67 days, (white thorn melon x white silk strips) is from May 13th to June 30th, melon fruiting The number of days is 47 days.

[0030] (2) Yield per unit area: the equivalent yield per mu in the 99-3 plot is 4060 kg, (white thorn melon x white silk strips) is 3210 kg.

[0031] (3) Disease resistance: In late May, the diseased leaf rate of downy mildew: 22% for 99-3, and 28% for (white thorn melon × white silk strips).

example 4

[0033] The parent is the tetraploid B-M(27)-2 of the white thorn melon, the inbred line of Baisitiao (BS-20-3-2), and the inbred line of Erzaozi (E-17-3-6). The inbred line of Baisitiao was crossed with the inbred line of Erzaozi (Baisitiao×Erzaozi), and in 1999, the hybrid was made by (B-M-(27)-2)×(Baisitiao×Erzaozi) Line 99-4, and the white thorn melon x (Baisitiao x Erzaozi) (Baicigua x Baisitiao x Erzaozi) were planted in the same field in 2000, and the sowing period was March On the 25th, the comparative test results were:

[0034] (1) Harvesting period: 99-4 is from May 18th to July 30th, the number of melon fruiting days is 72 days, (white thorn melon x white silk strips x Erzaozi) fruiting period is from May 14th to June 6th On the 30th day of the month, the number of melon fruiting days is 46 days.

[0035] (2) Yield per unit area: 99-4 plot is equivalent to 4110 kg per mu, and (white thorn melon x white silk strips x Erzaozi) plot is equivalent to 3050 kg per mu. ...

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Abstract

The breeding technology features that before crossbreeding, one of the parent is doubled into tetraploid; the trploid as female parent and a diploid parent are interplanted under strict separating condition and pollinated naturally; and after harvesting cucumber seeds of male parent and female parent separately triploid hybrid is separated via water selecting process. It this way, the propagation of parent and the crossbreeding are performed simultaneously.

Description

(1) Technical field [0001] The invention relates to a cucumber breeding method, in particular to cucumber ploidy breeding. (2) Background technology [0002] The use of hybrid breeding technology makes use of cucumber heterosis. The existing hybrid breeding technology selects different parents with genetic differences, and purifies the parents into inbred lines through methods such as self-crossing purification, and then hybridizes them into single-cross and three-cross varieties. kind. Or it can be used as a top cross with local elite varieties, and the first-generation hybrids can show the yield and disease resistance advantages of super-parents. Diploid hybrid cucumbers have made progress in yield, but they have no advantage in quality. The development of fruit seeds consumes a lot of nutrients, which reduces the nutritional content of edible parts, makes the taste and taste worse, and affects the cucumber in the vegetable market. proportion. There is a breeding method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02
Inventor 隆兴成
Owner 隆兴成
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