Breeding method for pyrus ussuriensis big seedlings
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A seed pear and seed technology, which is applied in the field of large seedling breeding of Qiuzi pear, can solve the problems of few branches and low survival rate of seedlings, and achieve the effect of well-developed root system
Inactive Publication Date: 2018-07-24
SHENYANG AGRI UNIV
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Problems solved by technology
[0003] At present, the problems of low seedling survival rate and few branches often occur in the breeding process of Qiuzi pear seedlings. Therefore, the present invention has studied a method for breeding Qiuzi pear seedlings to solve the above problems
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Embodiment 1
[0019] A method for breeding large seedlings of Qiuzi pear, comprising the following steps:
[0020] S1: Select the wild Qiuzi pear seeds with uniform size and full kernels to carry out stratification treatment. The stratification treatment method is: the wild Qiuzi pear seeds are soaked in water, and then mixed evenly with fine river sand with a humidity of 70% in a weight ratio of 1:5, Stratify for 40 days in an environment with good air permeability and a temperature of 0°C; sow the cracked shell seeds on-demand in the nutrient tray in March. The size of the nutrient tray is 54cm x 27cm, with a total of 72 holes, and each hole is 4cm long. ×Width 4cm×Depth 12cm, the cultivation substrate is a mixture of peat and perlite with a good air permeability weight ratio of 2:1, when the number of true leaves is ≥5, wild Qiuzi pear seedlings are obtained;
[0021] S2: Transplant the wild Qiuzi pear seedlings in S1 into plastic pots. The size of the plastic pots is 20cm in diameter x ...
Embodiment 2
[0025] S1: Select wild Qiuzi pear seeds with uniform size and full kernels to carry out stratification treatment. The stratification treatment method is: the wild Qiuzi pear seeds are soaked in water, and then mixed evenly with fine river sand with a humidity of 80% in a weight ratio of 1:5, Stratified for 60 days in an environment with good air permeability and a temperature of 5°C; in March, the cracked seeds were sown on a nutrient tray. The size of the nutrient tray was 54cm x 27cm, with a total of 72 holes, and each hole was 4cm long. ×Width 4cm×Depth 12cm, the cultivation substrate is a mixture of peat and perlite with a good air permeability weight ratio of 2:1, when the number of true leaves is ≥5, wild Qiuzi pear seedlings are obtained;
[0026] S2: Transplant the wild Qiuzi pear seedlings in S1 into plastic pots. The size of the plastic pots is 20cm in diameter x 30cm in height. They are cultivated in a greenhouse with a daytime temperature of 28°C and a nighttime tem...
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Abstract
The invention belongs to the technical field of breeding of fruit tree seedlings, and particularly relates to a breeding method for pyrus ussuriensis big seedlings. The method comprises the followingsteps: selecting seeds of wild pyrus ussuriensis, performing stratification treatment, performing hand seeding, transplanting seedlings of the wild pyrus ussuriensis to obtain rootstock seedlings of the wild pyrus ussuriensis, performing trimming to prepare rootstock and scions, performing grafting by adopting a stem grafting manner, supplementing a compound fertilizer, performing half-leaf picking on tender leaves located at the top end, performing pressing treatment, and spraying a mixed liquid of gibberellin and cytokinin to obtain the pyrus ussuriensis big seedlings. The method provided bythe invention adopts scientific and reasonable breeding measures to realize the purpose that the pyrus ussuriensis big seedlings with a developed root system, a branching number of 15 or more, a plant height of 1.8 m or more and a diameter of 2 cm or more are bred in two years, and achieve the purposes that an orchard is quickly formed, and tree bodies are formed in the early stage, and have a high yield in the later stage.
Description
technical field [0001] The invention belongs to the technical field of fruit tree seedling breeding, in particular to a method for breeding large seedlings of Qiuzi pear. Background technique [0002] Qiuzi pear (scientific name: Pyrus ussuriensis Maxim.) is a Rosaceae, Pyrus tree, up to 15 meters high, winter buds are hypertrophic, ovate, with blunt apex, slightly hairy or nearly glabrous scale edges, ovate to broad ovate leaves Shaped, apex short and acuminate, base round or nearly heart-shaped, edge with prickly awn-like sharp serrations, upper and lower sides glabrous or downy when young, petiole with downy when young, stipules linear-lanceolate, apex Acuminate, with glandular teeth on the margin, dense inflorescence, 5-7 flowers, total pedicel and pedicel tomentose when young, bracts membranous, linear-lanceolate, outer glabrous or slightly tomentose of calyx tube; sepals Triangular-lanceolate, apex acuminate, margin with glandular teeth, petals obovate or broadly ovat...
Claims
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