A Diseased Specimen
Instead of showing the vigor that usually characterizes hybrids, this specimen shows an impoverished condition of the nutritional system, which should lead to the rejection of this seedling. It might be compared with a tubercular or ill-nourished animal, and it cannot be depended upon to produce good fruit. The wise plant developer would never give it an opportunity to come to fruiting age.
This image is from: Luther Burbank: his methods and discoveries and their practical application. Volume 5 Chapter 8