Variety traits
Hydrangea macrophylla (Thunb.) Ser.
In Hydrangea macrophylla, male sterility manifests as pollen degradation resulting from selection for double flowers and ornamental inflorescence traits. This condition is not a commercial metric and represents a side effect of mutations in reproductive organ development.
In the reference 278 varieties crop Bigleaf hydrangea, where this is mentioned in the description.
Male sterility in Hydrangea macrophylla is closely linked to the inflorescence structure of ornamental cultivars. In forms with double flowers, abortion or degradation of pollen is frequently observed, which is considered a consequence of genetic disorders similar to mutations in floral organ development genes.
In breeding programs, male sterility is evaluated experimentally through analysis of pollen grain morphology using scanning electron microscopy, testing of pollen viability, and assessment of seed set during backcrossing. This trait does not have standardized agronomic scales and is not utilized in industrial hybridization.
General information about the subject — on the page Cytoplasmic Male Sterility (CMS).
Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Kolk Jacobus W. P.|1187 NK Amstelveen, NL
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :EVELEENS C P
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Kolster Holdings BV
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
NIELS ARTS
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
van Zoest B.V. Andre|Reeuwijk 2811 PS, NL
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
MICHAEL A DIRR
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
van Dijk Roy Robin
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
van Dijk Roy Robin
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Hydrangea Breeders Association B.V.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Michael A. Dirr , Mark Griffith, Rhonda Helvick , Jeff Beasley , Oren McBee , David Jonathan Roberts , Justin Schulze
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Ryoji Irie
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Kwekerij Sidaco B.V.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :EVELEENS C P
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Mallet, Corinne
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Wood Timothy D
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Wood Timothy D
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Mallet, Corinne
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
J.W.P. Kolk Bloemen B.V.
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Information regarding the breeder received in the contribution to CPVO :Santho Beveer B. V. (Eveleens C P)
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Toyokazu Ichie
Hydrangea macrophylla (Thunb.) Ser. · Bigleaf hydrangea
Meinl Katrin