What influences the chances of you cannabis plant turning purple is the genetics of the plant. If the strain is bred with traits that show purple flowers and leaves during the flowering period. There are stable strains out there right now that will turn purple right now. Some examples are Purple Star, Purple #1, these cannabis strains will have a better chance of turning purple.
Several pigments are responsible for color in plants: chlorophyll, carotene, xanthophyll, and anthocyanins. Chlorophyll is the pigment in chloroplasts of plants that reflects green light. Plants use the energy absorbed by chlorophyll in photosynthesis to produce food for their growth and development.
During flowering, with the passing of summer, days become shorter. The phytochromes, the light-sensing mechanisms in leaves, recognize the shorter day lengths.
The molecules reflecting red wavelengths, anthocyanins, are water-soluble pigments that occur in the cell sap, creating the red, pink, and purple hues. These pigments may not be present during the summer, or vegetative cycle, but their formation is encouraged during a succession of cool nights and sunny days.
The first degree of natural purple in cannabis could be characterized as occurring exclusively in the leaves and petioles: the colors of autumn appearing in the fan leaves during cooler temperatures and close to harvest.
Your best bet for purple plants is to purchase seeds strains that are proned to change colour in the fall. As the nights become cooler and your plants start to flower you will see the beautiful purple colour come out in your plants.
Plant breeding brings improvement in quality and quantity of production in plants by improving their genome.
Plant breeding
humans select which plant will reproduce with which plant. http://en.wikipedia.org/wiki/Selection_methods_in_plant_breeding_based_on_mode_of_reproduction
if we assume tall plant <T> & short plant as< t> genotype of tall plant ; TT genotype of short plant ; tt
A pure-bred plant that is homozygous for the traits being transfered.Alternatively a plant that is produced asexually/ vegetatively through cloning
R. Frankel has written: 'Pollination mechanisms, reproduction and plant breeding' -- subject(s): Plants, Fertilization of plants, Reproduction, Plant-breeding, Plant breeding
Plant breeding brings improvement in quality and quantity of production in plants by improving their genome.
Plant breeding
A true breeding plant is genetically homozygous. It produces the same type of plants on self fertilization. These plants are very useful for creating hybrids.
Morley Benjamin Crane has written: 'The genetics of garden plants' -- subject(s): Plant breeding, Plant-breeding
it is the identification and selection of desireble plants of desired charecters
S. N. Chandrasekharan has written: 'Cytogenetics and plant breeding' -- subject(s): Plant breeding, Cytogenetics, Plants, Variation
to determine its genetic composition, which, in turn, is the deciding factor to develop suitable breeding and selection methods.
There is no such a thing as Plants to get any type of dragons But you can get it by breeding them
True breeding plants were homozygous for all the characters expressed, hence inheritance of characters was better understood with the help of these plants.
Herbert Kendall Hayes has written: 'Breeding crop plants' -- subject(s): Plant breeding 'Methods of plant breeding' -- subject(s): Genetics, Plant breeding 'Correlation and inheritance in Nicotiana tabacum' -- subject(s): Breeding, Genetics, Tobacco 'A professor's story of hybrid corn' -- subject(s): Corn, Breeding, Hybrid corn
G. E. Russell has written: 'Plant breeding for pest and disease resistance' -- subject(s): Disease and pest resistance, Plant breeding, Plants