Tempropac Hybrid Peach Rootstock Nematode Resistance

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Solution Overview

Problem

Current peach rootstocks face challenges such as high chilling requirements, susceptibility to calcareous soils, and inadequate resistance to root-knot nematodes, which limit their adaptability and productivity.

Innovation Solution

The development of the 'Tempropac' hybrid peach rootstock, resulting from a cross between 'Monegro' and 'Flordaguard', which exhibits low chilling requirements, improved soil tolerance, and resistance to root-knot nematodes, characterized by red leaves, early flowering, and enhanced salinity tolerance, making it suitable for diverse growing conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional peach rootstocks are used, then they provide basic rootstock functions, but they have high chilling requirements and are susceptible to calcareous soils

Engineering Contradiction:

Improveadaptability to diverse growing conditionsVSAvoidsusceptibility to calcareous soils and high chilling requirements

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The patent applies hybridization to create a composite genetic structure by crossing 'Monegro' (Prunus dulcis×P. persica) and 'Flordaguard' (Prunus persica). This composite rootstock combines desirable traits from both parents: low chilling requirements from one parent and improved tolerance to calcareous soils from the other, thereby resolving the contradiction between adaptability and susceptibility to harmful soil conditions.

Inventive Principle:

Principle #40Composite materials

2Reliability

If existing rootstocks are used, then they provide standard growth, but they show inadequate resistance to root-knot nematodes

Engineering Contradiction:

Improveresistance to root-knot nematodesVSAvoidlimitation in diverse growing conditions

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent merges the genetic material of two different peach rootstock varieties through controlled cross-breeding. This combination integrates the nematode resistance trait from one parent with the overall adaptability and growth characteristics of the other, creating a rootstock that simultaneously achieves reliable disease resistance and broad adaptability to diverse growing conditions.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If traditional rootstocks are used, then they maintain standard productivity, but they lack improved salinity tolerance

Engineering Contradiction:

Improvetolerance to salinity and calcareous soilsVSAvoidproductivity in diverse soils

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent utilizes genetic hybridization to change the physiological parameters of the rootstock, specifically improving tolerance to salinity and calcareous soils. By selecting parents with complementary traits and combining them through controlled breeding, the resulting 'Tempropac' rootstock exhibits enhanced adaptability to diverse soil conditions, which directly supports maintained or improved productivity in previously challenging environments.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUSPP21533P3Variety of Prunus rootstock named `Tempropac`

Publication Date: 2010.11.30 AGROMILLORA IBERIA

AI summary

A new and distinct hybrid peach plant used as a rootstock that exhibits red leaves, root-knot nematode resistance, and compatibility with peach, nectarine, and almond varieties.