Variety traits
Flower diameter is a morphological trait of a variety used to assess ornamental quality, commercial value, and plant identification during variety testing.
Mentioned in descriptions 2 318 varieties reference book.
Flower diameter is an important morphological indicator that characterizes the varietal traits of a plant and its aesthetic value. In the process of varietal identification, this trait is recorded in centimeters or millimeters using measuring rulers during the mass flowering phase, with measurements taken on several plants at different points of the plot to obtain reliable average data.
The value of this indicator is determined by the genetic potential of the variety, although its actual realization directly depends on external conditions, including light, temperature, humidity, and the level of mineral nutrition. In some crops, an inverse correlation is observed between the total number of flowers on an inflorescence and their size, which is linked to the effect of intraspecific competition for nutrients.
During variety trials, flower diameter parameters are evaluated in comparison with the generally accepted standard for a specific species, as there are no absolute quality criteria. Depending on the methodology, scoring scales may be used where flower size correlates with a gradation of ornamental value, and the values from the official description of the breeding achievement are attained only when optimal agricultural practices are followed.
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
J.W.P. Kolk Bloemen B.V.
Hippeastrum Herb. · Amaryllis
Ben van Geest
Phalaenopsis Bl. · Moth Orchid
Schoone Rene
Tulipa L. · Tulip
H.B.E. BLOEMBOLLEN VOF
Iris L. · Iris
WENTINK H.J.^^^FA. DE GEUS - VRIEND
Phalaenopsis Bl. · Moth Orchid
Sion Young Plants B.V.
Chrysanthemum L. · Chrysanthemum
JAN HOEK
Chrysanthemum L. · Chrysanthemum
WALTER H. JESSEL, JR. & WILLIAM E. DUFFETT
Limonium Mill. · Sea Lavender
New Zealand Institute of Crop and Food Research Ltd
Pelargonium zonale (L.) L'Hér. · Horseshoe pelargonium
Syngenta Seeds B.V.
Lilium L. · Lily
PEACOCK B.V., IMANSE LELIEVEREDELING B.V.
Veronica peduncularis M. Bieb.
Theobald Hendrik|Heidesheim, DE
Rosa L. · Rose
Spek Rose Breeding International B.V.
Rosa L. · Rose
Rosa Eskelund
Dahlia Cav. · Dahlia
Fa Gebr Verwer
Rosa L. · Rose
Poulsen Roser A/S
Rosa L. · Rose
Poulsen Roser A/S
Rosa L. · Rose
Poulsen Roser A/S
Rosa L. · Rose
H.C.A De Groot
Rosa L. · Rose
Poulsen Roser A/S
Rosa L. · Rose
Poulsen Roser A/S
Rosa L. · Rose
Poulsen Roser A/S
Rosa L. · Rose
Poulsen Roser A/S
Papaver orientale L. · Oriental poppy
Oudshoorn Hubertus Gerardus