M7 Navel Orange Cultivar Early Maturation and Fruit Shape
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Solution Overview
Problem
Current navel orange cultivars lack a variety that matures earlier than 'Navelina 7.5', and existing cultivars do not offer fruit with uniform globose shape, higher Brix levels, and smoother leaf surfaces.
Innovation Solution
The 'M7' citrus cultivar, derived from a limb sport mutation of 'Navelina 7.5', exhibits early colouring and maturity, uniform globose fruit shape, smoother leaf surfaces, and higher Brix levels, achieved through grafting onto 'Citrange' and 'Volkameriana' rootstocks, maintaining stability in asexually propagated trees.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional navel orange cultivars are used, then fruit production is maintained, but fruit maturation time is extended and early harvest is not achievable
Solution Approach 1:
The patent applies parameter changes by selecting and propagating a limb sport mutation with altered physiological parameters that result in accelerated fruit maturation. The 'M7' variety exhibits changed developmental timing parameters, achieving market-preferred specifications approximately 2 weeks earlier than 'Navelina 7.5' while maintaining navel orange characteristics.
2Shape
If 'Navelina 7.5' cultivar is used, then fruit production is achieved, but fruit shape uniformity and globose form are not obtained
Solution Approach 1:
The patent applies local quality by selecting a limb sport mutation that exhibits localized changes in fruit development characteristics. The 'M7' variety displays uniform globose fruit shape with consistent rounding throughout development, distinguishing it from the more variable shape of 'Navelina 7.5' while maintaining productive fruit set.
3Quantity of substance
If conventional cultivars are used, then leaf surface texture is maintained, but higher Brix levels and improved fruit quality are not achieved
Solution Approach 1:
The patent applies parameter changes by propagating a limb sport mutation with altered physiological parameters including higher Brix levels. The 'M7' variety consistently achieves higher soluble solids content compared to 'Navelina 7.5', improving fruit quality for fresh market consumption while the leaf surface exhibits a distinguishable smoother texture.
Data Source
AI summary
A new orange tree (Citrus sinensis) named ‘M7’ is disclosed. ‘M7’ is a limb sport mutation of ‘Navelina 7.5’. ‘M7’ is notable for its high quality, uniformly globose fruit, which colors and matures very early as compared to its parent and to other known varieties.