Method for creating and identifying cold-resistant germplasm of macadamia nuts

An identification method and nut technology, applied in the fields of botanical equipment and methods, planting beds, seed immunity, etc., can solve the problems of low cold resistance, and achieve the effect of improving the survival rate and reasonable soil structure.

Active Publication Date: 2022-06-24
GUANGXI SUBTROPICAL CROPS RES INST GUANGXI SUBTROPICAL AGRI PROD PROCESSING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the cold resistance of macadamia nuts is low. In addition, in recent years, extreme cold weather has occurred in various places from time to time, and cold damage to macadamia nuts often occurs. It is urgent to develop macadamia nut seedlings with simple identification methods and good cold resistance effects.

Method used

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  • Method for creating and identifying cold-resistant germplasm of macadamia nuts

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Experimental program
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Effect test

Embodiment 1

[0030] A method for creating and identifying cold-resistant germplasm of macadamia nuts, comprising the following steps:

[0031] (1) Seed selection: Select mature shelled macadamia nuts that are free of diseases and insect pests, and the surface of the shell is smooth and unbroken, and picked in the same year as seeds; the varieties of mature shelled macadamia nuts are H2 and HAES 900;

[0032] (2) Seed soaking treatment: soak the seeds in a propylene glycol solution with a propyl paraben concentration of 10 g / kg for 4 hours, take them out to dry, and obtain the surface-treated seeds; the volume ratio of the seeds to the propyl paraben solution is 1:5;

[0033] (3) Variable temperature treatment:

[0034]3.1) Cyclic heating and cooling: adjust the temperature of the periodic heating and cooling device to 8°C, and put the surface-treated seeds into the periodic heating and cooling device for 3 cycles of heating and cooling to obtain temperature-change treated seeds; cycle Th...

Embodiment 2

[0039] A method for creating and identifying cold-resistant germplasm of macadamia nuts, comprising the following steps:

[0040] (1) Seed selection: Select mature shelled macadamia nuts that are free of diseases and insect pests, and the surface of the shell is smooth and unbroken, and picked in the same year as seeds; the varieties of mature shelled macadamia nuts are H2 and HAES 900;

[0041] (2) Seed soaking treatment: soak the seeds in a propylene glycol solution with a propyl paraben concentration of 20 g / kg for 6 hours, take them out to dry, and obtain the surface-treated seeds; the volume ratio of the seeds to the propyl paraben solution is 1:5;

[0042] (3) Variable temperature treatment:

[0043] 3.1) Cyclic heating and cooling: adjust the temperature of the periodic heating and cooling device to 12°C, and put the surface-treated seeds into the periodic heating and cooling device for 5 cycles of heating and cooling to obtain temperature-change treated seeds; cycle ...

Embodiment 3

[0048] A method for creating and identifying cold-resistant germplasm of macadamia nuts, comprising the following steps:

[0049] (1) Seed selection: Select mature shelled macadamia nuts that are free of diseases and insect pests, and the surface of the shell is smooth and unbroken, and picked in the same year as seeds; the varieties of mature shelled macadamia nuts are H2 and HAES 900;

[0050] (2) Seed soaking treatment: soak the seeds in a propylene glycol solution with a propyl paraben concentration of 15 g / kg for 5 hours, take them out and dry them to obtain surface-treated seeds; the volume ratio of the seeds to the propyl paraben solution is 1:5;

[0051] (3) Variable temperature treatment:

[0052] 3.1) Cyclic heating and cooling: adjust the temperature of the periodic heating and cooling device to 10°C, and put the surface-treated seeds into the periodic heating and cooling device for 4 cycles of heating and cooling to obtain temperature-change treated seeds; cycle ...

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Abstract

The invention discloses a method for creating and identifying cold-resistant germplasm of macadamia nuts. The method comprises the following steps: (1) selecting seeds; (2) seed soaking treatment; (3) variable-temperature treatment; (4) raising seedlings; (5) identifying selected products; mutagenesis breeding is performed on macadamia nuts by combining temperature change treatment and low-temperature chemical mutagenesis treatment, and a seedling raising process is performed under a relatively low temperature condition, so that macadamia nut seedlings with a good cold-resistant effect can be preferably mutagenized and screened; the seedling raising process is carried out on a specially-made artificial seedbed, the specially-made artificial seedbed can provide sufficient nutrients for the macadamia nut seedlings, the specially-made artificial seedbed is reasonable in soil structure and especially suitable for longitudinal and transverse growth of root systems of the macadamia nut seedlings, the survival rate of the macadamia nut seedlings is increased, and meanwhile the seedling raising efficiency is improved. The cold resistance of the macadamia nut seedlings can be conveniently calculated according to the ratio of the depth to the width of the seedling root system.

Description

technical field [0001] The invention relates to the technical field of agricultural planting, in particular to a method for creating and identifying cold-resistant germplasm of macadamia nuts. Background technique [0002] Macadamia nut alias: Queensland chestnut, macadamia nut, macadamia nut, Queensland fruit, is a tree nut native to Australia. Macadamia is an evergreen tree, dicotyledonous plant. The crown is tall, the leaves are 3 to 4 whorled, lanceolate, leathery, smooth, with thorn-like serrations on the edge. Racemes axillary, beige flowers, spherical fruit, leathery, hard endocarp, seed kernels beige to light brown. Suitable for growing in mild, humid, low wind areas. Among the many dried fruits in the world, macadamia nuts have the highest economic value and have always enjoyed the reputation of "the king of dried fruits". Macadamia nuts are rich in nutrients (milk white), their outer peel is blue-green, and the inner peel is hard and brown. A single fruit weigh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00A01G9/28A01C1/00A01C1/08A01H1/06A01N31/02A01N51/00A01N33/22A01N43/22A01P21/00
CPCA01G17/005A01G9/28A01C1/00A01C1/08A01H1/06A01N31/02A01N51/00A01N33/22A01N43/22
Inventor 蔡元保杨祥燕
Owner GUANGXI SUBTROPICAL CROPS RES INST GUANGXI SUBTROPICAL AGRI PROD PROCESSING RES INST
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