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Method using grafting to predict heterosis

A technology of heterosis and prediction methods, applied in grafting, botany equipment and methods, applications, etc., can solve the problems of large prediction errors, poor accuracy, long cycle, etc., to improve the efficiency of hybrid breeding, strong intuition, and measurable strong effect

Active Publication Date: 2016-08-31
GUANGXI SUBTROPICAL CROPS RES INST GUANGXI SUBTROPICAL AGRI PROD PROCESSING RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for predicting heterosis by grafting, so as to overcome the shortcomings of existing prediction methods such as poor accuracy, large prediction error, time-consuming, labor-intensive, long cycle and high cost.

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  • Method using grafting to predict heterosis
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  • Method using grafting to predict heterosis

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Embodiment Construction

[0045] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0046] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0047] The cassava is predicted by using the method for predicting heterosis by grafting of the present invention. Take cassava as an example. The typical ecotypes of cassava in Guangxi are moderately hardened red soil (Longan, Ningming, Wuming, Guiping, Pingnan, etc. red loam), and sandy loam (Beihai, Hepu, etc.). Prediction of heterosis for each pairwise combination of 4 cassava varieties, selection of land preparation,...

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Abstract

The invention discloses a method using grafting to predict heterosis; the method comprises the following steps: 1, selecting a typical ecotype land as a test field; 2, designing a planting plot number, and setting a repetition number; 3, grafting two or more plants, wherein the grafting types comprise a parent cluster, an endophilicity cluster, and an interaction cluster; 4, managing each plant according to requirements after grafting, regularly removing germinated buds below the grafting portion, only keeping scion to grow after grafting survival, removing the rest parts, and carrying out water fertilizer management; 5, measuring grafting type target yield and related physiology index in harvesting; 6, using heterosis prediction method to predict the grafting type. The method can predict the heterosis of random combination, can compare various groups of data so as to find the heterosis combination with advantages, is strong in experiment result visual effect, strong in testability, thus greatly improving hybridization efficiency.

Description

technical field [0001] The invention relates to the field of hybrid breeding, in particular to a method for predicting heterosis by grafting. Background technique [0002] Hybrid breeding is the basic breeding method for more than 90% of animal and plant breeding new varieties at present. Hybrid breeding uses the heterosis in the biological world. The heterosis in the stomach refers to the hybridization of two parents with different traits (or genetic composition). The phenomenon of hybrids surpassing their parents in terms of growth vigor, vitality, fecundity, adaptability, yield, quality and other traits. For example, the first generation of hybrids obtained by crossing different strains, different varieties, or even different species often exhibit stronger growth rates and metabolic functions than their parents, resulting in developed tissues and organs, increased body size, and improved yields, or It is manifested in the improvement of disease resistance, insect resista...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/06
CPCA01G2/30
Inventor 俞奔驰韦丽君李军雷开文郑华付海天
Owner GUANGXI SUBTROPICAL CROPS RES INST GUANGXI SUBTROPICAL AGRI PROD PROCESSING RES INST