Free The Cannabis Breeder's Bible by Greg Green

Kushberry that will breed true for the Kushberry traits. This means that the breeder has not four parent plants, but six.
     
    If you are asking the question if there is a difference between using the male or female version of each parent for the resulting hybrid the answer is in what you have already learned in the previous chapter. Let us look at the Punnet tables for each.
     
    Masterkush has BB for brown bud color. Blueberry has bb for blue bud color. Since both strains are stable there is no Bb in their individual populations.
     
    Masterkush male #1 x Blueberry female #1
     
b
b
B
Bb
Bb
B
Bb
Bb
    Blueberry male #1 x Masterkush female #1
     
B
B
B
Bb
Bb
b
Bb
Bb
    It seems like both ways will produce Bb, brown bud color, so there it makes no difference which male or female we use. However let us continue on with another trait. Masterkush has cc for a small calyx. Blueberry has CC for big calyx. Since both strains are stable there is no Cc in their individual populations.
     
    Masterkush male #1 x Blueberry female #1
     
c
c
C
Cc
Cc
C
Cc
Cc
    Blueberry male #1 x Masterkush female #1
     
C
c
Cc
Cc
c
Cc
Cc
    It seems like both ways will produce Cc, big calyx, so it makes no difference which male or female we use. This means that in stable strains, without variations in the populations, the male or female selection does not change the resulting offspring.The resulting offspring will only change with the different male and female selection if we breed the resulting offspring or if we are use heterozygous traits to begin with.
     
C
c
C
CC
Cc
C
CC
Cc
     
C
c
c
Cc
cc
c
Cc
cc
    This will help you understand more about the actual propagation of genetics. You may be wondering at this point: Is it possible for the breeder to create a true breeding hybrid if by some fluke of nature the two parent plants combine in such a way that no heterozygous genotypes are produced? We already know from chapter 2 that the very term true breeding hybrid is untrue. It simply does not exist, so this statement is not possible.

    THE STRAIN’S PARENTS
    Ideally a strain should have two parents that are unique only to that strain. Nowadays it is very common to see well-liked strains produce new hybrids that have some association with the well-liked strain’s parents. A good example of this would be to take two very popular strains like Northern Lights and Haze. Recently NL x Haze has come onto the market and has gained some popularity. It is highly unlikely however that NL x Haze is as stable as NL or Haze. There will probably be variations in the population until such time as the breeder develops NL x Haze parents that are unique to that line and breed true.
     
    This is very important to know about, especially in situations where a breeder has developed two very popular strains only to produce a third cross between the two. This third cross is usually less stable than the line from which it came, although over time the breeder will undoubtedly develop separate parents to make this line more uniform in growth. One very popular strain that is being developed for more stability at the moment is Jack Flash from Sensi Seeds. Jack Flash is a very popular variation of the famous Jack Herer strain that revolutionized the industry. Every year Jack Flash becomes more stable. This suggests that the breeder is making headway in developing two unique parents that will eventually combine to create a Jack Flash that is very uniform in its traits.
    The Male Parent
    Because the female parent is generally the parent that we are trying to improve on, or recreate, we have a problem with selecting the right male for the job. Male plants do not exhibit female floral traits and so the initial selection of the contributing male is blind.
     
    In order to assess the male plant’s breeding qualities you must perform test crosses and consider the results in the offspring 4 . This is very dependant on the female and how the male’s genes combine with those of the female to produce