Cross breeding method of macadimia nuts

A technology of hybrid breeding and nuts, applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of time-consuming, labor-intensive, stigma injury, low fruit setting rate, etc., and achieve the goal of avoiding false hybrids, improving efficiency, and improving purity Effect

Active Publication Date: 2014-08-27
YUNNAN INST OF TROPICAL CROPS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of detasseling is time-consuming and labor-intensive, and the probability of stigma injury is relatively high. Due to the large number of injured stigmas, the fruit setting rate is relatively low

Method used

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  • Cross breeding method of macadimia nuts

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The macadamia nut variety D4 used in the method of macadamia hybrid breeding in this embodiment is the female parent, and the variety HAES900 is the male parent, and 3 plants are selected for each, which specifically includes the following steps:

[0021] Step (1), emasculation: in the full flowering stage of macadamia nut variety D4, select the inflorescence with most of the flower buds whitish, the perianth tubes split and the style protruding for the 1d, remove the florets that the perianth tubes have not split, and style the Thin out the florets that protrude on the 1st day until 30 florets remain in each inflorescence. Cut off the perianth tube with sharp U-shaped scissors at the protruding and curved part of the floret style. After cutting the perianth tube for 10 minutes, gently remove it with tweezers Tepals were bagged and sealed to obtain emasculated inflorescences;

[0022] Step (2), collecting pollen: on the day of emasculation of the female parent infloresc...

Embodiment 2

[0027] The macadamia nut variety D4 used in the method of macadamia hybrid breeding in this embodiment is the female parent, and the variety HAES900 is the male parent, and 4 plants are selected for each, which specifically includes the following steps:

[0028] Step (1), emasculation: in the full flowering stage of macadamia nut variety D4, select the inflorescence with most of the flower buds whitish, the perianth tubes split and the style protruding for the 1d, remove the florets that the perianth tubes have not split, and style the Thin out the florets that protrude on the 1st day until 100 florets remain in each inflorescence. Cut off the perianth tube with sharp U-shaped small scissors at the protruding and curved part of the floret style. After cutting the perianth tube for 30 minutes, gently remove the flowers by hand. Tepals are bagged and sealed to obtain emasculated inflorescences;

[0029] Step (2), collecting pollen: on the day of emasculation of the female parent...

Embodiment 3

[0034] The macadamia nut variety D4 used in the method of macadamia hybrid breeding in this embodiment is the female parent, and the variety HAES900 is the male parent, and 5 plants are selected for each, which specifically includes the following steps:

[0035] Step (1), emasculation: in the full flowering stage of macadamia nut variety D4, select the inflorescence with most of the flower buds whitish, the perianth tubes split and the style protruding for the 1d, remove the florets that the perianth tubes have not split, and style the The protruding florets of the 1d are thinned out until 60 florets are left in each inflorescence. Cut off the perianth tube with sharp U-shaped small scissors at the protruding and curved part of the floret style. When the upper part of the cut perianth tube is turned outwards, use Gently remove the tepals by hand and bag and seal to obtain emasculated inflorescences;

[0036] Step (2), collecting pollen: on the day of emasculation of the female...

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Abstract

The invention provides a cross breeding method of macadimia nuts and belongs to the field of cross breeding technologies of fruit trees. The cross breeding method comprises three steps of carrying out castration, collecting pollen and artificially pollinating. The step of carrying out castration comprises the following processes: selecting inflorescences with most paled flower buds, cracked perianth tubes and flower columns protruding the 1dth during full-bloom stages of the macadimia nuts, removing little flowers with uncracked perianth tubes, pruning the little flowers with the flower columns protruding the 1dth till each flower bud retains 30-100 small flowers, cutting off the perianth tubes in protruded and bent parts of the flower columns of the little flowers, removing perianth pieces when partially turning parts of the cut perianth tubes outwards or after cutting the perianth tubes for 10-30 minutes, covering the flowers with bags and sealing to obtain castration inflorescences. By virtue of the method, the castration efficiency of the macadimia nuts is effectively improved, the artificial castration is relatively simple and quick, the generation of false hybrid is avoided, and the purity of hybrids is improved.

Description

technical field [0001] The invention belongs to the technical field of fruit tree hybrid breeding, and in particular relates to a method for hybrid breeding of macadamia nuts. Background technique [0002] Macadamia (Macadamia spp.), native to the subtropical rainforests of southeastern Queensland and northern New South Wales, Australia, is a perennial evergreen tree fruit tree. my country began to introduce macadamia nuts in the 1970s and has a cultivation history of more than 50 years. The cultivation area of ​​macadamia nuts has exceeded that of Australia, the main producing country. However, the commercially planted varieties are mainly foreign bred varieties. In order to meet the needs of production and research, and to breed new varieties with independent intellectual property rights that are suitable for our country's climate environment, our country started macadamia breeding in 2009, and hybrid breeding is still a new breed of macadamia. The main method of variety se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02
Inventor 陶丽贺熙勇倪书邦陈丽兰肖晓明陈国云孔广红
Owner YUNNAN INST OF TROPICAL CROPS
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