The Genetics of Anthocyanin Pigmentation (of Colour) and Chlorophylls Content of <i>G. hirsutum</i> L. Cotton Plant

Abstract

In the article, the first time genes of anthocyanin pigmentation R p and R st v appeared in cotton plant interacting complementarily. Recessive homozygosis r p r р r st v r st v conditions the development of green colour . The gen R p conditions the development of anthocyanin in all organs of plants, R st v only exists on the stalk and in the nerves of leaves, the flower is uncolored, the boll is green. The plants’ existence in genotype of both dominant equilocal genes (R p , R st ) provides a high rate of biosynthesis of anthocyanin — dark red. Inheritance of the chlorophylls “a” + “ b” and “a” and “b” quantity in anthocyanin coloured L-2 and L-3 lines of F 1 and F 2 generations. The quantity of chlorophylls in anthocyanin coloured L-3 line was defined 1.0 - 1.5 times higher and participation of the gen R st v responsible for anthocyanin colour in chlorophylls biosynthesis was also defined. Apparently, in the line L-3 in R st v is localized , there are gens which are responsible for the quantity of chlorophyll or R st v has pleiotropic effect s on the quantity of chlorophyll. It is proved with low quantity of chlorophyll in green coloured plants by recessive homozygote condition r p r p r st v r st v green colour .