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A method of predicting heterosis by grafting

A technology of heterosis and prediction method, applied in grafting and other directions, can solve the problems of large prediction error, poor accuracy, long cycle, etc., and achieve the effect of improving the efficiency of hybrid breeding, strong intuition, and strong measurability.

Active Publication Date: 2019-05-28
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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  • A method of predicting heterosis by grafting
  • A method of predicting heterosis by grafting
  • A method of predicting heterosis by grafting

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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 for predicting heterosis by grafting, comprising the following steps: (1) selecting a representative ecotype as a test site; (2) designing the number of planting plots and setting the number of repetitions; (3) grafting, placing Two or more plants are grafted, and the grafting type includes: parental value class, affinity value class, and interaction value class; the grafting method includes double scion or grafting above double scion; (4) grafting Afterwards, manage according to the requirements of the respective crops for grafting, regularly wipe out the sprouting buds below the grafting, after the grafting survives, only the scion is left to grow, and the rest are wiped off, and then water and fertilizer management is carried out; (5) when harvesting, measure the target yield of the grafting type and related Physiological indicators; (6) Use the prediction method of heterosis to predict the type of grafting. The method of the invention can predict the heterosis of any combination, and compare multiple groups of data to find out the heterosis combination with superior advantages.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G2/30
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