Denomination: '98-M91-1'
Botanical Name: Chrysanthemum
Applicant/Holder: Regents of the University of Minnesota
Office for Technology Commercialization
Suite 160, 1000 Westgate Drive
St. Paul, Minnesota
United States of America
Breeder: Paul B. Savereide, Regents of the University of Minnesota, Minneapolis, United States of America
Agent in Canada: BioFlora Inc.
38723 Fingal Line
R.R. #1
St. Thomas, Ontario
N5P 3S5
Tel: 519-631-6241
Application Date: 2001-02-28
Application Number: 01-2556
Grant of Rights Date: 2007-10-10
Certificate Number: 2951
Grant of Rights Termination Date: 2025-10-10

Variety Description

Variety used for comparison: 'Golden Star'

Summary: '98-M91-1' has wider leaves with a deeper lower lobe sinus than 'Golden Star'. The flower heads of '98-M91-1' have less ray florets than those of 'Golden Star'. The ray florets of '98-M91-1' are shorter with longer corolla tubes and lighter yellow than those of 'Golden Star'.


PLANT: natural season cultural system, pinched plant type, spray flowering type, use as pot plant
STEM: very weak to moderate anthocyanin colouration

LEAF: truncate base, sinus between lateral leaf lobes has diverging to parallel margins

FLOWER HEAD: single to semi-double type, spoon to quill subtype, self-coloured, yellow colour group, light colour intensity, no bracts among florets
RAY FLORETS: straight longitudinal axis, shape of end spatulate to quilled, fringed tip, light yellow on the upper and lower side
DISC: tubular disc florets massed at centre, yellow orange with light green in centre

Origin & Breeding History: The chrysanthemum variety '98-M91-1' originated from the selfing of variety '95-23-87' performed in 1994 at St. Paul, Minnesota, U.S.A. The new variety was selected from the progeny in the fall of 1995. Asexual propagation of the variety has been conducted through the use of terminal or stem cuttings.

Tests & Trials: The test and trial for '98-M91-1' was conducted during the fall of 2006 at BioFlora Inc. in St. Thomas, Ontario. The trial included 15 plants of each variety. Rooted cuttings were transplanted into 20 cm pots on July 13, 2006. The trial was grown outdoors under natural light conditions. Observations and measurements were taken from 10 plants of each variety on September 27, 2006. All colour measurements were made using the 2001 Royal Horticultural Society (RHS) Colour Chart.

Comparison tables for '98-M91-1' with reference variety 'Golden Star'

Plant height (cm)

  '98-M91-1' 'Golden Star'
mean 22.7 26.4
std. deviation 2.12 2.06

Primary lateral shoots (count)

  '98-M91-1' 'Golden Star'
mean 3.5 4.7
std. deviation 0.53 0.67

Leaf width (cm)

  '98-M91-1' 'Golden Star'
mean 5.1 3.9
std. deviation 0.49 0.50

Length of leaf lower lobe (cm)

  '98-M91-1' 'Golden Star'
mean 3.1 2.6
std. deviation 0.22 0.33

Depth of leaf lower lobe sinus (cm)

  '98-M91-1' 'Golden Star'
mean 1.4 0.8
std. deviation 0.28 0.19

Length of ray floret (cm)

  '98-M91-1' 'Golden Star'
mean 0.8 1.9
std. deviation 0.20 0.26

Length of corolla tube (cm)

  '98-M91-1' 'Golden Star'
mean 4.7 3.4
std. deviation 0.32 0.27

Diameter of disc (cm)

  '98-M91-1' 'Golden Star'
mean 1.9 1.6
std. deviation 0.17 0.13

Colour of ray floret (RHS)

  '98-M91-1' 'Golden Star'
upper surface 10B 6A
under surface 10B 7D

Colour of disc (RHS)

  '98-M91-1' 'Golden Star'
main 15A with 144C in the centre N144A with tones of 14A

Click on image for larger view
Chrysanthemum: '98-M91-1' (left) with reference variety 'Golden Star' (right)

Date modified: