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Breeding method of watermelon rootstock

A watermelon and rootstock technology, applied to the field of watermelon rootstock selection, can solve the problems of restricting wild watermelon rootstock selection, distant watermelon kinship, watermelon quality decline, etc., and achieves the effects of protecting parents, strong affinity, and stable variety traits.

Inactive Publication Date: 2019-04-02
ZHENGZHOU FRUIT RES INST CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, pumpkin-type rootstocks and gourd-type rootstocks are far related to watermelons, and the quality of watermelons will decline after grafting, which is the main shortcoming of these two kinds of rootstocks.
The wild watermelon rootstock is a hybrid of two wild watermelons, which has no effect on the quality of the watermelon after grafting, but wild watermelon seeds have a certain degree of dormancy, and the "capped" phenomenon of seed germination is serious, and the breeding cycle of this rootstock is long, and the offspring It is easy to separate similar parent types, but it is difficult to protect varieties. The yield is not as high as that of pumpkin rootstocks, and the resistance is poor, which limits the breeding of wild watermelon rootstock varieties.

Method used

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  • Breeding method of watermelon rootstock
  • Breeding method of watermelon rootstock
  • Breeding method of watermelon rootstock

Examples

Experimental program
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Effect test

Embodiment 1

[0025] In 2012, seven internationally renowned medicinal watermelon materials originating in Algeria and other countries were introduced from the United States (Table 1). In 2014, a preliminary hybridization experiment was carried out with Zigua Y20, a disease-resistant offspring of the well-known Chinese variety 'Daoxian Red Seed Melon'. The medicinal watermelon was used as the male parent, and the seed melon was used as the female parent. Each material was pollinated 50 times. After completion, the number of fruit set was counted to calculate the hybrid compatibility. The hybridization affinity calculation method is as follows:

[0026] Hybrid compatibility = number of fruit set / number of cross pollination * 100%

[0027] At the same time, the offspring were continuously selfed, and the selfing affinity of the offspring was calculated.

[0028] Self-compatibility = number of fruit set / number of self-pollination * 100%

[0029] The results show that, for example, three ...

Embodiment 2

[0037] Rootstock grafting test:

[0038] The scion uses the famous watermelon variety 'Hong 1' in my country, and white-seeded pumpkin and Yaozhen No. 1 are used as rootstocks respectively. 100 plants are grafted for each treatment, and repeated 3 times. The survival rate was counted 15 days after grafting.

[0039] The results are shown in Table 3. Yaozhen No. 1 has a good grafting affinity with ordinary watermelons, and the grafting survival rate of the three treatments is above 99%. There is no significant difference in plant growth compared with white-seeded pumpkin grafted rootstocks.

[0040] Table 3 Comparison experiment of grafting white-seed pumpkin and Yaozhen No. 1

[0041]

Embodiment 3

[0043] Rootstock field test experiment: The test site is divided into three plots, and each plot is planted with 50 grafted seedlings of the above two kinds, 50 self-rooted seedlings, and the spacing between plants and rows is 0.4m×2m. Drip irrigation is used for cultivation, and field management is based on normal watermelon. Planting management, no special treatment. Agronomic traits such as fruit powder, fruit shape, and pulp color were counted after fruit ripening.

[0044] The results are shown in Table 4, wherein the average fruit weight, peel hardness, and thickness data show that pumpkin rootstock > medicinal watermelon stock > self-root, and the fruit fiber data show that the fruit fiber of the pumpkin rootstock increases significantly after grafting, and medicinal watermelon and self-root rootstock There was no significant difference, and the pulp texture data showed that the flesh of the pumpkin rootstock became hard after grafting, and there was no significant diff...

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Abstract

The invention provides a watermelon rootstock breeding method and application thereof, which relates to the technical field of rootstock breeding. The method of the invention comprises the following steps: hybridizing medicinal watermelon serving as male parent and seed watermelon serving as female parent to obtain F1-generation seeds; selecting the seeds of F1-generation with self-fertility lessthan 30 percent and seeds of F2-generation with self-sterility to be combined, and hybridizing the seeds to obtain a novel watermelon variety. The novel rootstock variety bred by the invention can sufficiently play the growth advantages and self-protection effects of the rootstock variety, also has strong disease resistance, and has double resistance of seed watermelon and medicinal watermelon; the seed germination rate is high, the grafting affinity is good, and quality is good; the plant is strong in growth, stable in fruit setting and is not suitable for overgrowth; the self-pollination ofthe rootstock is poor, and the seed germination rate is low even if in success of the self-pollination of a small amount of seeds; and the parent material of the rootstock can be effectively protectedagainst loss.

Description

technical field [0001] The invention belongs to the technical field of rootstock breeding, in particular to a method for breeding watermelon rootstocks. Background technique [0002] Watermelon (Citrullus colocynthis) is a species under the genus Watermelon. Its origin is in Africa. The plant grows vigorously. The leaves are small and waxy on the surface. It is drought-resistant and disease-resistant. Its pulp is white and hard. Has a bitter taste. Seed melon (C.lanatus var.megalaspermus lin et Caho) is a variety of watermelon species (Citrullus lanatus (Thunb.) Matsum.&Nakai), with large seeds and large cotyledons at the seedling stage. The plant grows vigorously and has a waxy surface , Drought resistance, its pulp is white or yellowish white, light in taste, feeds on seeds, and the pulp can be used as animal feed. [0003] At present, my country is the world's largest producer of watermelons, with an area of ​​more than 30 million mu of watermelon cultivation. In variou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
CPCA01H1/02
Inventor 尚建立李娜周丹王吉明马双武
Owner ZHENGZHOU FRUIT RES INST CHINESE ACADEMY OF AGRI SCI
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