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Construction method of high-yield early-fruiting cedar dwarf clonal seed orchard

A technology of clones and seeds, applied in horticultural methods, botany equipment and methods, horticulture, etc., can solve the problems of increased labor force, low survival rate of grafting, and little research on seed gardens, so as to promote growth and seed production and increase seed yield and quality, improving the effect of water, fertilizer and light conditions

Pending Publication Date: 2021-08-17
RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current research on cypress mainly focuses on production management and ecological benefits, and there is little research on genetic improvement such as seed orchards
At present, cypress seed gardens still mostly adopt the method of colonization and grafting in the garden, which has problems such as low survival rate of grafting, difficulty in configuring clones, and increased labor force.

Method used

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  • Construction method of high-yield early-fruiting cedar dwarf clonal seed orchard
  • Construction method of high-yield early-fruiting cedar dwarf clonal seed orchard
  • Construction method of high-yield early-fruiting cedar dwarf clonal seed orchard

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 Genetic management of seed orchards and selection of excellent orchard-building clones

[0039]Based on the construction materials of the 1.5 generation cypress clone seed orchard in Laoshan Forest Farm, the genetic determination of the offspring of the seed orchard was carried out in Kaihua, Zhejiang, Chun'an, Taizishan, Hubei and other places on the basis of the first generation of seed orchard. The project team evaluated the quality of the selected excellent trees from the level of genetic gain by measuring the growth, material and shape of the 28 seed orchard progeny families, and used them for the reconstruction of the 1.5-generation clone seed orchard. At the same time, Provide unrelated reproductive material for multi-generation breeding.

[0040] The results showed that the family heritability of 7-year-old cypress tree diameter, tree height and volume varied from 0.42 to 0.74, and the single plant heritability varied from 0.13 to 0.61 (Table 1). Acco...

Embodiment 2

[0044] Embodiment 2 cypress clone seed orchard construction mode

[0045] 1 Research on rapid cultivation technology of simple container seedlings

[0046] 1.1 Materials and methods

[0047] 1.1.1 Overview of material sources

[0048] The rootstock seedlings used in the grafting experiment were well-grown cypress first-generation seed garden offspring container seedlings, and the basic information of the rootstock seedlings is shown in Table 2.

[0049] Table 2 Basic situation of rootstock seedlings in cypress grafting test

[0050]

[0051] 1.1.2 Experimental design

[0052] The project team carried out 7 batches of cypress grafting experiments, and carried out experimental research on these important influencing factors such as grafted scion clones, rootstock seedling age, grafting sites, and grafting operators. The 7 grafting experiments were all carried out in the nursery of the water dock facility at the Laoshan Base, Chun'an County, Zhejiang Province. The grafting...

Embodiment 3

[0081] Embodiment 3 seed orchard tree body and field management technology

[0082] 1 tree management

[0083] 1.1 Purpose of tree management

[0084] Shaping is mainly to adjust the position of the crown on the trunk, by lowering the canopy and limiting high growth. The main purpose is to dwarf the tree so that it can be operated and managed on the ground; pruning is mainly to repair the branches of the canopy, focusing on the outer canopy. Select and remove the branches that are not strong, and then thin out the leafless branches of the inner crown to facilitate ventilation and light transmission in the crown (inside the chamber), improve the nutritional space of the tree body, promote flowering and fruiting, and form a large tree with a strong surface. Canopy type. When necessary, the branches can be pulled to adjust the tree structure, cultivate the ideal tree shape, and increase the effective light area of ​​the internal branch tips.

[0085] 1.2 Key points

[0086] B...

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Abstract

The invention discloses a construction method of a high-yield early-fruiting cedar dwarf clonal seed orchard, and belongs to the technical field of forestry. The construction method comprises the steps as follows: genetic management of the seed orchard, selection of excellent orchard construction clones, construction of a clonal seed orchard and management of seed orchard tree bodies and orchard plots. Compared with the prior art, the construction method disclosed by the invention has the beneficial effects that the method can make a cedar improved seed base put into production in advance, increase the seed yield, ensure timely supply of improved seeds, and accelerate the production and breeding process of the cedar improved seeds.

Description

technical field [0001] The invention relates to the technical field of forestry, in particular to a method for constructing a high-yield and early-fruiting cypress dwarf clone seed orchard. Background technique [0002] Cypress is an evergreen tall tree belonging to Cupressaceae. It is a unique and precious tree species in my country. It has strong adaptability, wide distribution area, high comprehensive utilization value, and three major benefits. It occupies a very prominent position in my country's forestry development. This tree species is the main afforestation tree species in limestone soil in Zhejiang, Fujian, Jiangxi, Hunan, Hubei, Guizhou, Chongqing, Sichuan and other provinces and cities. [0003] However, the current research on cypress mainly focuses on production management and ecological benefits, and there is little research on genetic improvement such as seed orchards. At present, cypress seed gardens still mostly adopt the method of colonization and graftin...

Claims

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Application Information

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IPC IPC(8): A01G17/00A01G2/30A01G7/06A01G24/12A01G24/23A01G24/28
CPCA01G17/005A01G2/30A01G24/12A01G24/28A01G24/23A01G7/06
Inventor 张振金国庆周志春
Owner RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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