Thread: Fhia-1
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Old 11-24-2017, 05:49 PM   #20 (permalink)
PR-Giants
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Default Re: Fhia-1

Quote:
Originally Posted by sputinc7 View Post

If nobody can be 80+% sure from pictures, how can your pictures make anyone 98% sure?
Quote:
Originally Posted by PR-Giants View Post

This is a guide to help identify the FHIA cultivars and should improve the folks that are 80+% accurate to 98+%.

Identification and characterization guide for FHIA banana and plantain hybrids

If nobody is 80% accurate using your Guessing System and you give this guide to everyone that is 80% accurate how many guides would you need to give out?

Instead of trying to guess cultivars using those 3 Descriptors/Characters, try to determine the genotype of an unknown cultivar by using the scoring system below.

The FHIA-01 is a semi-dwarf tetraploid, so start by learning the characteristics of tetraploids and see if they match also measure the leaves to see if it's a dwarf. If it's not a semi-dwarf tetraploid it's not a FHIA-01.

Quote:
Originally Posted by PR-Giants View Post

The nomenclature system used to classify banana cultivars was developed by Norman Simmonds and Kenneth Shepherd in 1955. It classifies cultivated bananas into genome groups, according to the relative contribution of their ancestral wild species, and into subgroups, sets of closely related cultivars. This system eliminates almost all the difficulties and inconsistencies of a taxonomy based on Musa paradisiaca and Musa sapientum. However, due to difficulties in assigning certain cultivars to a subgroup, and to a lesser extent to a group, there are inconsistencies in the way the system has been applied. Adding to the confusion is the continued use of Latin binomials to classify cultivated bananas. Cultivated bananas are unusual in not having a Latin scientific name.

In this system, bananas, at least the ones that are related to Musa acuminata and Musa balbisiana, are classified according to the relative contribution of these species designated by the letter A, for acuminata, and B, for balbisiana. A cultivar is assigned to a genome group according to the number of chromosome sets in its genome (its ploidy) and the species that donated them. Diploid cultivars can belong to the AA or AB genome group, while triploid cultivars fall into three genome groups: AAA, AAB and ABB.

Some taxonomists recognize a BBB genome group, but its existence has not been conclusively demonstrated. Tetraploid cultivars are mostly hybrids produced by breeders.


Scoring system

The system is based on 15 characters that were chosen because they are different in Musa acuminata and Musa balbisiana. Each character is scored on a scale from one (typical Musa acuminata) to five (typical Musa balbisiana). The possible total scores range from a minimum of 15 to a maximum of 75. The expected scores are 15 for AA and AAA, 35 for AAB, 45 for AB, 55 for ABB and 75 for BB.

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Last edited by PR-Giants : 11-24-2017 at 06:00 PM.
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