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Method for reproducing magnolia zenii seedlings

A technology for Baohua magnolia and seedlings, which is applied in the field of Baohua magnolia seedling propagation, can solve the problems of difficulty in applying Baohua magnolia to large-scale breeding, high cost and large labor consumption of Baohua magnolia, and achieves the improvement of cutting survival rate, Low cost and long rooting time

Inactive Publication Date: 2013-09-25
句容市林场
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because there is no magnolia rootstock with close kinship, good affinity and high survival rate with Baohua Magnolia, and the cost of grafting and propagation is high; therefore, grafting and propagation is difficult to apply to large-scale breeding of Baohua Magnolia.
[0007] Using direct cuttings to propagate Baohua Magnolia, its rooting rate is low, resulting in high cost and low survival rate of large-scale breeding Baohua Magnolia

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] In June 2011, researchers conducted related experiments on cuttings at Nanjing Forestry University, and selected (1) factor A of Baohua magnolia branches, three levels: A1 lignified branches in the previous year; A2 semi-lignified branches in the current year; A3 young and tender in the current year branch. ⑵Factor B of the type of rooting agent, three levels: B1.ABT1 (No. ABT1 rooting powder is generally used for cutting seedlings of difficult-to-root plants and precious plants, developed by Professor Wang Tao, an academician of the Chinese Academy of Engineering), B2.NAA (naphthalene acetic acid), B3.IBA (indolebutyric acid). (3) rooting agent concentration C factor, three levels: C1.400㎎ / L, C2.600㎎ / L, C3.800㎎ / L). An orthogonal experiment with three factors and three levels was carried out. The substrate is one third each of perlite, vermiculite and peat.

[0025] The test results showed that: in the cutting test of Baohua Magnolia, the treatment of semi-lignified ...

Embodiment 2

[0027] In June 2012, the researchers conducted another experiment on cuttings in Jurong City Forest Farm under Baohua Mountain in Baohua Magnolia Reserve. 1:1, ④ perlite: peat = 1: 1, ⑤ perlite: vermiculite = 3: 1, ⑥ perlite: peat = 3: 1, ⑦ perlite: vermiculite: peat = 1: 1: 1) ; ⑵Concentration of rooting agent (①400㎎ / L, ②600㎎ / L, ③800㎎ / L); ⑶Treatment time (①10s, ②10min, ③1h), conduct cutting test. The cuttings are semi-lignified branches of the current year, and the rooting agent is an aqueous solution of NAA rooting agent.

[0028] The test results show that: in the 30-day investigation of the cuttage test of Baohua Magnolia, the substrate ③ perlite: vermiculite = 1: 1, the rooting agent concentration ② 600㎎ / L, the treatment time ① 10s are the best, and the rooting rate is 62.22% , callus formation rate (not rooted) 17.78%, root effect index 1.05.

Embodiment 3

[0030] Utilize the method of the present invention to Baohua Magnolia seedling propagation, comprise the following steps:

[0031] (1) In June, when the spring shoots of Baohua Magnolia stop growing and the branches are semi-lignified, cut 8-10 cm semi-lignified branches of Baohua Magnolia with top leaves, and cut off half of the top leaves;

[0032] (2) The lower part of the Baohua Magnolia branch in step (1) is immersed in the rooting agent solution; the rooting agent solution is a NAA rooting agent solution, and the NAA rooting agent powder is first dissolved in alcohol with a concentration of more than 75%, and then formulated into The concentration is 500-700㎎ / LNAA rooting agent aqueous solution;

[0033] (3) Insert the Baohua Magnolia branches treated in step (2) into the cutting matrix for 5-15 seconds, spray the cutting matrix with thiophanate liquid to prevent infection and necrosis of cuttings wounds, and cuttages with Baohua Magnolia branches The cutting substrate ...

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Abstract

The invention provides a method for reproducing magnolia zenii seedlings. The method comprises the following steps that in June, a magnolia zenii branch which is half lignified and with a top leave is clipped by 8-10cm, and a half of a blade of the top leave is clipped; the lower portion of the magnolia zenii branch in the step (1) is immersed in rooting agent solution and then treated; the magnolia zenii branch in the step (2) is inserted to a cutting medium, Topsin medicinal liquid is used for spraying the cutting medium, and the cutting medium with the magnolia zenii branch is placed in a greenhouse with a sunshade net for culturing. The method is simple in process, branches with the proper lignification degree, kinds and concentration of rooting agents and proper cutting media are selected, the rooting ratio can reach more than 75%, therefore, the cutting survival ratio of the magnolia zenii seedlings is greatly improved, the magnolia zenii seedlings can be bred in a large-scale mode, the cost is low, and the efficiency is high.

Description

technical field [0001] The invention belongs to the field of plant seedling propagation, in particular to a Baohua magnolia seedling propagation method. Background technique [0002] Baohua Magnolia (Magnolia zenii) is a small deciduous tree belonging to the genus Magnolia of the angiosperm Magnoliaceae. It is a unique tree species in Jiangsu Province, and its natural distribution is only in Baohua Mountain, Jurong City. Baohua magnolia is a representative of northern subtropical vegetation. It was discovered by Zheng Wanjun, a famous Chinese botanist, in 1932, and it was named and announced to the world. It is obviously different from other magnolias that are "related" to it. Significance. At the same time, Baohua Magnolia has a tall and straight tree and bright flowers. It is a rare and rare broad-leaved tree species with high ornamental value in the plant kingdom. [0003] In the 1991 "Chinese Plant Red Book", Baohua Magnolia was listed as a national-level III endangere...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00
Inventor 范文杰赵邢王国庆杨学祥段雅红
Owner 句容市林场
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