Event Title

Session 3A: Chemistry guided breeding of calibrachoa hybrida for novel and stable flower colors

Session Number

Session 3A: 1st Presentation

Advisor(s)

Dr. Jayaraj Alappat, Ball Horticultural Company

Location

Auditorium

Start Date

26-4-2018 12:40 PM

End Date

26-4-2018 1:25 PM

Abstract

Three major groups of pigments, anthocyanins, betalains, and carotenoids, are responsible for the brilliant natural display of flower colors. The chemistry (nature, quantity, and the profile) of the pigments determine the observed flower color, diversity and its stability. In the laboratory, systematic analysis of the pigments quantity (by UV/VIS spectrophotometry) and profile (using High Performance Liquid Chromatography) and the communication of analysis results enable the breeder to modulate the color, intensity and the stability of the flower colors they develop. The goal of our study is to predict the stability of flower colors and direct breeders to develop novel shades. Our focus was the orange color in the calibrachoa flower, which is often a challenge to breeders; most shades of orange fade/bleach in the sun over time. We analyzed 43 lines of calibrachoa in the current experiment with the goal to evaluate the role of anthocyanins, anthocyanidins, flavonoids, carotenoids, and the pH in rendering strong and stable orange colors. The pigment and pH analysis are complete and the results from the laboratory work (along with suggestions for optimal crosses) will be presented.

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Apr 26th, 12:40 PM Apr 26th, 1:25 PM

Session 3A: Chemistry guided breeding of calibrachoa hybrida for novel and stable flower colors

Auditorium

Three major groups of pigments, anthocyanins, betalains, and carotenoids, are responsible for the brilliant natural display of flower colors. The chemistry (nature, quantity, and the profile) of the pigments determine the observed flower color, diversity and its stability. In the laboratory, systematic analysis of the pigments quantity (by UV/VIS spectrophotometry) and profile (using High Performance Liquid Chromatography) and the communication of analysis results enable the breeder to modulate the color, intensity and the stability of the flower colors they develop. The goal of our study is to predict the stability of flower colors and direct breeders to develop novel shades. Our focus was the orange color in the calibrachoa flower, which is often a challenge to breeders; most shades of orange fade/bleach in the sun over time. We analyzed 43 lines of calibrachoa in the current experiment with the goal to evaluate the role of anthocyanins, anthocyanidins, flavonoids, carotenoids, and the pH in rendering strong and stable orange colors. The pigment and pH analysis are complete and the results from the laboratory work (along with suggestions for optimal crosses) will be presented.