Smooth Texan Two Nectarine Tree Early Ripening and Firmness
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Solution Overview
Problem
There is a need for a nectarine tree variety that can thrive in regions with relatively low chilling requirements and produce high-quality, firm yellow-fleshed fruit that ripens early in the season, suitable for commercial harvesting and shipping.
Innovation Solution
The 'Smooth Texan Two' nectarine tree, developed through controlled crosses at Texas A&M University, combines the traits of 'Crimson Baby' and 'Bradley' to produce fruit that is firm, yellow-fleshed, and ripens about 12 days before 'June Gold' peach, with characteristics such as attractive red skin coloration and medium to high productivity, making it suitable for medium chill zones like Texas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If early-ripening varieties are selected, then ripening time is reduced, but fruit quality and firmness may deteriorate
Solution Approach 1:
The patent applies parameter changes by selecting and breeding for specific genetic traits that alter the ripening parameters of the nectarine. The variety 'Smooth Texan Two' was developed through controlled crosses to achieve early ripening (approximately 12 days before 'June Gold' peach) while maintaining fruit quality parameters including firmness, yellow flesh color, and attractive red skin coloration. This resolves the contradiction by changing the genetic parameters of the fruit to enable early ripening without quality deterioration.
2Reliability
If firm yellow-fleshed fruit is produced, then fruit quality is improved, but adaptability to low chill zones may be reduced
Solution Approach 1:
The patent applies merging by combining the desirable traits of two parent varieties through controlled cross-breeding. The female parent 'Crimson Baby' and male parent 'Bradley' were selected and crossed to produce progeny that inherit both the firm yellow-fleshed fruit quality characteristics and the adaptability to low chill zones. The F2 progeny selection process identified plants that merged these complementary traits, achieving both high fruit quality and adaptability to medium chill zones like Texas.
3Loss of time
If early-season ripening is achieved, then commercial harvesting time is reduced, but keeping quality during shipping may be compromised
Solution Approach 1:
The patent applies preliminary action by selecting and breeding for traits that pre-establish the fruit's keeping quality before harvest. The variety 'Smooth Texan Two' was specifically bred to maintain firmness and quality characteristics that enable extended post-harvest storage and shipping. The fruit's inherent firmness and resistance to deterioration are built-in through genetic selection, allowing early-ripening fruit to maintain quality during commercial shipping periods.
4Reliability
If resistance to bacterial leaf spot is inherited, then disease resistance is improved, but fruit firmness and quality may be affected
Solution Approach 1:
The patent applies feedback through a systematic breeding program that evaluates multiple generations for both disease resistance and fruit quality traits. The breeding process involved controlled crosses, F2 progeny evaluation, and selection of plants that exhibited both resistance to bacterial leaf spot (Xanthomonas campestris pv. pruni) and desirable fruit firmness. This iterative selection process provided feedback to identify and propagate plants that maintained both disease resistance and fruit quality without compromise.
Data Source
AI summary
Disclosed is a new variety of Prunus persica named ‘Smooth Texan Two’. This new variety, which requires approximately 600 chilling units of dormancy, is considered to be a nectarine tree of early season maturity, which ripens in mid to late May in the medium chill zone of Texas and produces yellow fleshed fruit that are firm, attractively colored, and suitable for both local and regional markets.