AAB - BBBB Type Crosses Updated: 24 May, 2002 Returning? Jump to Photos |
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This page presents "quarterbred" seedlings obtained by crossing AAB-type triploids with BBBB-typeTBs. Tell me more about the nomenclature.... Such crosses are usually attempted only by experienced hybridizers, but sometimes a beginner may try them without realizing the complexities involved so I've provided some background material. A cross between an AAB-type triploid and BBBB-type TB can produce both ABB-type triploids and ABBB-type tetraploids, which have both similarities and differences in appearance and in breeding behavior. Both types qualify as quarterbreds (OB-, RB-, or OGB- under the current classification system), so for the purpose of registration it is not necessary to determine which group a specific seedling belongs to. To the hybridizer who is planning the next generation, however, these factors should be taken into account in evaluating any seedlings.Click on the thumbnail to see a larger version of a photo. |
The first section dates to the period in which I numbered crosses when I lined out the seedlings and then numbered the individual seedlings when they were selected for further evaluation and consideration for introduction. The numbers are therefore no indication of the number of crosses actually made or the number of seedlings produced by each cross. | ||
88-8: Brandy Sipper X Tribe of Judah. | ||
88-8-3
Its rounded, onco-like form and distinct signal suggest that it is a triploid -- in which case it should certainly offer some breeding potential even though it must be classified as a quarterbred. |
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89-1: Sostenique X Tribe of Judah. Go to Sibling Sheet for more details. | ||
89-1-2 Quite nice, and a good performer, but not as striking as the sib introduced as COPE GOODWIN. In retrospect, it was worthy of introduction but at the time I thought it was too much like COPE GOODWIN. | ||
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89-1-4 More photogenic than MAGNIFICENT OBSESSION, with better form, but without the striking signal and not as strong-growing. | |
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89-1-6 A striking example of the veined, blended pattern with buff ground. Introduced as PALIMPSEST. | |
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89-1-8 A striking example of the veined, blended pattern with pinkish ivory ground. Introduced as VIVACIOUS VI. | |
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89-1-10 My personal favorite, introduced as COPE GOODWIN. | |
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89-1-30 The most popular sib, the strongest performer and one of the best signals -- but camera-shy. Introduced as MAGNIFICENT OBSESSION. | |
The following section dates to the period in which I numbered both crosses and seedlings when I lined out the seedlings. The numbers are still no indication of the number of crosses actually made, but they hold a few clues as to the number of seedlings produced by each cross. | ||
91-27: Goddess X Tribe of Judah Testing glaciatas with my best signal-transmitter, I got an array of complex patterns. | ||
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91-27-2 Introduced as FLAUNT IT | |
Hybridizing Terminology. You won't find these terms in official classification systems, but will see them in articles written by such well-known hybridizers as Tom Wilkes and John Holden. "A" simply stands for a set of aril chromosomes and "B" for a set of non-aril chromosomes. Fractions were sometimes used to depict the number of sets of aril chromosomes and the total number of sets. An AAB-type triploid might thus be called a "2/3-bred", while "2/4" would indicate a halfbred with two sets of aril chromosomes and two sets of non-aril chromosomes, and "1/2" would stand for a diploid with one set of aril chromosomes and one set of non-aril chromosomes. These terms were once widely used by hybridizers, but fell out of favor after the Aril Society adopted the Modified Chromosome-set Classification System but retained the nomenclature from the older Quantum System. Today, "1/2" usually means a fully fertile halfbred with two sets of aril and two sets of non-aril chromosomes. I have used the old-style hybridizers' terminology here, because it is not possible to accurately determine the correct classification code for seedlings of this type without extensive test crosses. |
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