F3 and AF
In this paper we will share experiences about Istillah " F " that we usually hear , perhaps the topic of writing already wrote it but suppose this paper is a complement to the memerukannya . In some areas the interpretation of the term " F " is different , but it is not an absolute criterion for determining the quality walnut . In Yogyakarta, the term the term " F " will be different than in Surabaya , Malang , Cirebon , Bandung , Jakarta or other area in Indonesia .
Theory Genetics Gregor Johann Mendel by scientists , argues " F " = an abbreviation of the word that means filial descendants . In every marriage / cross by Mendelian Heredity will inherit the properties of its parent ( parental ) .
In Heredity ( heir to the nature of the parent to offspring ) Mendel argues , as follows :
Hybrid ( cross between two individsu results with different signs ) has properties similar to the parent and every hybrid has the same properties as another hybrid of the same species .
Character or nature of a hybrid offspring always recur on a regular basis and it is this which gives guidance to Mendel that of course there are certain factors that play a role in the transfer of properties from one generation to the next generation ( gen ) .
Heredity , follow a logical distribution .
This theory is directly practiced our dipenangkaran , TEBUKTI didivinisikan true as Mendel , the crossing we use breeders ( male ) Yorkshire and Lizard Canaries import , crossed by breeders ( females ) Local walnut . Hybrids that we do with the aspect . Parental ( sires ) and Phenotypes ( characters / properties that can be observed such as shape , color , sound , etc. ) of prospective broodstock , with results as follows :
Yorkshire canary ( yellow ) male with female local ( bon green ) crossed derivatives termed " F.1 " , with 50 % of Heredity Dominant genes Yorkshire : (see also: kenari merah )
25 % = dominant yellow color , putting a semi Yorkshire .
25 % = green , putting the dominant color bon semi Yorkshire .
50 % = Mixed colors ( green and yellow ) , putting semi Yorkshire .
If the canary F.1 ( bon green ) males with females F.1 ( yellow ) crossed from different derivative child is at - termed " F.2 " , with 25 % of Heredity Dominant genes Yorkshire :
25 % = dominant yellow color , putting a strain Yorkshire being lost .
25 % = bon dominant color being green , putting strain Yorkshire lost .
25 % = mix color strains Yorkshire berpostur being lost .
25 % or bon mix color = green / yellow , putting small .
Furthermore, if the canary F.2 with crossed F.2 of different derivatives anakannya Walnuts in - termed " F.3 " .
And so on if walnuts F.3 with crossed F.3 - term descent in Walnuts " F.4 " , and so on up to " F " ( ? ) . At this stage tiered cross Yorkshire strain will disappear and become dominant , putting a small walnut / local .