Schimacrenata crossbreeding method

A hybrid breeding and wood lotus technology, applied in the field of hybrid breeding of woody plants, can solve the problems of backward and unseen breeding process, and achieve the effect of large market potential, large amount of seeds used, and improved quality of hybrid parents.

Inactive Publication Date: 2015-09-09
FUJIAN ACAD OF FORESTRY
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Problems solved by technology

However, the research on the selection and genetic improvement of fine varieties of Schima superba started relatively late in China, and the breeding process is relatively backward. It is difficult to meet the large demand for good varieties in the construction of precious broad-leaved timber forests and ecological forests. It is necessary to strengthen the breeding and genetic improvement of Schima superba. Cultivate high-quality improved varieties, improve ...

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Embodiment

[0024] An effective Schima superba artificial control of pollination, actual gene recombination and obtaining a new genotype hybrid seed production method, specifically through the following steps:

[0025] Step 1 Selection of Schima superba tree (or good individual plant)

[0026] Selecting excellent individual trees that are significantly superior to surrounding trees in terms of growth, tree shape, resistance or other traits, and confirmed by selection and confirmation of specific good phenotypes, specifically include the following steps:

[0027] 1) Optimal forest land conditions: should be selected in a good provenance area or a suitable provenance area or in an area close to the climatic and ecological conditions and the seeding area; there is no inferior forest stand of the same tree species within 100m of the group. The terrain is flat, the drainage is good, the altitude is moderate, the traffic is convenient, the area is relatively concentrated, and the natural forest is gen...

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Abstract

The invention discloses a schimacrenata crossbreeding method. The schimacrenata crossbreeding method comprises selecting forest stand and select trees, carrying out grafted seedling cultivation, dividing a select tree asexual system into 3-5 subsystems according to schimacrenata asexual system flowering periods comprising early, middle and later periods and according to schimacrenata select tree producing areas and flowering time, and carrying out hybrid seed production by a scheme comprising that breeding parents of each one of the subsystems are subjected to single crossing, a hybridized composition is determined and hybridization does not occur between subsystems so that schimacrenata seeds with a mature period of 2 years are obtained. Through hybrid seed production, a novel schimacrenata seed is produced so that a high-quality breed is obtained. According to different breeding parent combination, a fruit-setting ratio is 95%. The schimacrenata crossbreeding method provides a technical support for ecological forest planting.

Description

Technical field [0001] The invention belongs to the technical field of hybrid breeding of woody plants, and relates to a method for hybrid seed production of rare and excellent native broad-leaved tree species Schima superba, in particular to a method for cross breeding of Schima superba. Background technique [0002] Schima superba Gardn.et Champ (Schima superba Gardn.et Champ) is an evergreen tree of the Camellia family Schima superba with straight trunks, also known as lotus trees. The height of the tree is 20-30m, the diameter at breast height is 1m, and the leaves are oval to oblong. It is 10-12 cm long and 2.5-5 cm wide; the petiole is 1.4-1.8 cm long. The flowers are white, single axillary or short racemes at the top; peduncle 1.2 to 1 cm long, usually erect; sepals 5, with fine hairs on the edges; petals 5, obovate; most stamens; dense fine hairs at the base of the ovary. The capsule is nearly spherical, about 1.5 cm in diameter, 5-lobed, with woody skin. The seeds are ...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
Inventor 范辉华周志春汤行昊张蕊黄宇楚秀丽
Owner FUJIAN ACAD OF FORESTRY
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