A hybridization method to fix the fast-growing traits of willow

A hybridization method, the technology of dry willow, which is applied in the field of hybridization to fix the fast-growing traits of dry willow, can solve the problems of inconsistency and low efficacy of fast-growing varieties

Active Publication Date: 2020-10-23
SHANDONG FOREST SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the law of genetic variation of fast-growing traits is different between male and female parents, and the law of genetic variation of fast-growing traits in hybrids between dry willow and different species of willows is also inconsistent, so the effect of fast-growing species is not high.

Method used

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  • A hybridization method to fix the fast-growing traits of willow

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Step 1, selection of parent: select dry willow as female parent and weeping willow as male parent.

[0046] Step 2, flower branch preparation: on December 30, take 8 strong female flower branches of 1-2 years from the female parent of willow, with a length of 0.8-1.0m, and take 5 strong male flower branches of 1-2 years from weeping willow , length 60-80cm. The male and female flower branches are thinned, and the flower thinning intensity is 1 / 3 of the flower branches and flower buds.

[0047] Step 3, hydroponics in the greenhouse: separate the male and female flower branches according to the hybrid combination and open them in the greenhouse for hydroponics. The temperature in the greenhouse is controlled at 23° C. and the humidity is 70%. The male flowering branch is 5 days earlier than the female flowering branch. Cut off the bottom of the flowering branches every 3 days combined with water changes, and cut off 1-2cm each time to ensure that the water is clean and ...

Embodiment 2

[0055] Step 1, selection of parents: choose Willow willow as the female parent, and Korean weeping willow as the male parent.

[0056] Step 2, flower branch preparation: on December 30, take 8 strong female flower branches with a length of 0.8-1.0m from the female parent of willow willow in 1-2 years, and take 5 strong male flower branches with 1-2 years from the weeping willow in Korea Each, length 60-80cm. The male and female flower branches are thinned, and the flower thinning intensity is 1 / 3 of the flower branches and flower buds.

[0057] Step 3, hydroponics in the greenhouse: separate the male and female flowering branches according to the hybrid combination and open them in the greenhouse for hydroponics. The temperature in the greenhouse is controlled at 23° C. and the humidity is 60%. Male flowering shoots occur 4 days earlier than female flowering shoots. Cut off the bottom of the flowering branches every 3 days combined with water changes, and cut off 1-2cm each ti...

Embodiment 3

[0065] Step 1, selection of parents: choose Salix willow to be the female parent, and Firecracker willow to be the male parent.

[0066] Step 2, flowering branch preparation: Take 1-2 years old strong female flowering branches from the female parent of Willow willow on December 30, with a length of 0.8-1.0m, and take 1-2 years old strong male flowering branches from Firecracker Willow 5 Each, length 60-80cm. The male and female flower branches are thinned, and the flower thinning intensity is 1 / 3 of the flower branches and flower buds.

[0067] Step 3, hydroponics in the greenhouse: separate the male and female flowering branches according to the hybrid combination and open them in the greenhouse for hydroponics. The temperature in the greenhouse is controlled at 18° C. and the humidity is 60%. The male flowering branch is 5 days earlier than the female flowering branch. Cut off the bottom of the flowering branches every 3 days combined with water changes, and cut off 1-2cm ...

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Abstract

The invention discloses a hybridization method for fixing the fast-growing character of salix matsudana. The method includes the steps that the salix matsudana is selected as a female parent, and a weeping willow serves as a male parent; female flower branches and male flower branches are subjected to greenhouse water planting; when a large quantity of female flower stigmas secrete transparent mucus, pollination is continuously carried out for 3-6 days, the greenhouse temperature is controlled to be 20-23 DEG C after pollination, the humidity is 60-80%, and it is ensured that pollinated hybrids can development normally; hybrid seedlings are cultivated, wherein the hybrids are collected after being ripe 20-30 days after pollination, then germination acceleration is carried out on the collected hybrids, the hybrids are sown in nutrient cups after sprouting for seedling raising, and timely watering and disease and pest control are carried out. The method is easy to operate, easy to acceptand master, low in cost and good in application and popularization value.

Description

technical field [0001] The invention belongs to the technical field of tree hybrid breeding, and in particular relates to a hybridization method for fixing the fast-growing traits of dry willow. Background technique [0002] The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] Willow is fast-growing, adaptable, and easy to reproduce asexually. It is not only the main timber tree species in the plain area, but also an important soil and water conservation and surrounding greening tree species. Fast-growing species is an important aspect of willow directional breeding, and there is currently no specific method for fixing the fast-growing traits of willow. Willow inter-species and intra-species genetic variation in growth traits is relatively large, compared with other willows, dry willow has more prominent fast-growing traits, and has high hybrid affinity with other willow species...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G17/00A01H1/02
CPCA01G17/005A01H1/02
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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