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Method for improving yield of hybrids in artificial hybridization of Salix matsudana

A technology of artificial control and acquisition rate, applied in the fields of botanical equipment and methods, plant genetic improvement, application, etc., can solve the problems of reducing the yield and germination rate of hybrids, easy draining of branches, thin branches, etc., to improve the maturity of hybrids. degree and acquisition rate, high breeding success rate, and the effect of improving pollen quality

Active Publication Date: 2018-12-18
SHANDONG FOREST SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that most willow branches are thin and weak, and the number of inflorescences on the branches is large. The nutrients in the branches are difficult to meet the requirements of hybrid development and maturity. and germination rate, leading to breeding failure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Step 1. Selection of the mother plant: Select the 6-year-old Hanliu Luliu No. 6 as the female parent. The mother plant grows robustly, is free from diseases and insect pests, and has a natural and good shape.

[0051] Step 2. Preparation of male flowering branches: Select the male parent of Willow Luliu No. 1, which has a good hybrid compatibility with Willow willow, and cut off the male flowering branches on December 25. There are 5 male flowering branches in total, with a diameter of 0.5-0.8cm and a length of 50-80cm, each male flower branch thinned out 1 / 3 of the weak male flower buds according to the size of the male flower buds from small to large. The size of male flower buds of willow willow is generally 2.0╳0.8cm, and those below 0.8╳0.3cm are weak male flower buds.

[0052] Step 3. Preparation of female flowering branches: Cut the selected robust female flowering branches of Salix sylvestris from the mother plant on December 30, a total of 10 female flowering b...

Embodiment 2

[0060] Step 1. Mother plant selection: choose 5-year-old Hanliu Luliu No. 6 as the female parent. The mother plant grows robustly, is free from diseases and insect pests, and has a natural and good shape development.

[0061] Step 2. Preparation of male flowering branches: choose Firecracker Willow with good compatibility with Willow willow as the male parent, and cut off the male flowering branches on December 25. There are 6 male flowering branches in total, with a diameter of 0.5-0.8cm and a length of 50-80cm. According to the size of the male flower buds of each male flower branch, 1 / 3 of the weak and small male flower buds were thinned out from small to large. The size of male flower buds of willow willow is generally 2.0╳0.8cm, and those below 0.8╳0.3cm are weak male flower buds.

[0062] Step 3. Preparation of female flowering branches: Cut the selected robust female flowering branches of Salix sylvestris from the mother plant on December 30, a total of 10 female flower...

Embodiment 3

[0070] Step 1. Selection of mother plant: Select 4-year-old Hanliu Luliu No. 6 as the female parent. The mother plant grows robustly, is free from diseases and insect pests, and has a natural and good shape.

[0071] Step 2, preparation of male flowering branches: choose the white willow with good compatibility with Salix willow as the male parent, and cut off the male flowering branches on December 25, with a total of 7 male flowering branches, with a diameter of 0.5-0.8cm and a length of 50-80cm. According to the size of the male flower buds on a male flower branch, 1 / 3 of the weak male flower buds are thinned out from small to large. The size of male flower buds of willow willow is generally 2.0╳0.8cm, and those below 0.8╳0.3cm are weak male flower buds.

[0072] Step 3. Preparation of female flowering branches: Cut the selected robust female flowering branches of Salix sylvestris from the mother plant on December 30, a total of 10 female flowering branches, with a length o...

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Abstract

The invention discloses a method for improving the yield of hybrids in artificial hybridization of Salix matsudana. The method comprises the following steps: (1) selection of mother plants; (2) preparation of male flower shoots: selecting male plants with good hybridization affinity to Salix matsudana as male parents, wherein the male flower shoots are required to have diameters of 0.5-0.8 cm andlengths of 50-80 cm, and thinning the male flower shoots by removing 1 / 3 weak and small male flower buds; (3) preparation of female flower shoots, wherein the female flower shoots have lengths of 0.7-1.0 m and diameters of 1.0-2.0 cm; (4) culturing of the flower shoots; (5) pollen collection; (6) pollination; (7) management after pollination; and (8) hybrid collection. The method of the inventioncan effectively overcome the characteristic of thin and weak branches of Salix matsudana, improves pollen quality by thinning flowers, ensures the supply of nutrients in a hybrid development cycle through branch thinning and flower thinning, promotes the maturation of hybrids, increase the maturity and the yield of the hybrids, allows the yield and germination rate of the hybrids to be increased by 20% or more and 30% or more, respectively, and has high breeding success rate.

Description

technical field [0001] The disclosure relates to the technical field of tree hybrid breeding, in particular to a hybrid breeding method for increasing the rate of artificially controlled hybrid hybridization of willow. Background technique [0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] The interspecific and intraspecific genetic variation of willow is large, and the hybrid affinity is high, so crossbreeding is the main means of cultivating new willow varieties. Willow crossbreeding generally adopts two methods: greenhouse cutting branch hydroponics hybridization and outdoor big tree hybridization. The advantages of hydroponic hybridization with cut branches in the greenhouse are that it is easy to control the temperature and humidity, and can artificially control the morning and evening of the flowering period. influences. The disadvantage is that most willow bra...

Claims

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Application Information

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IPC IPC(8): A01H1/02
CPCA01H1/02A01H1/027
Inventor 秦光华于振旭宋玉民乔玉玲彭琳
Owner SHANDONG FOREST SCI RES INST
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