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WO2017172401A1 - Plante de stevia dénommée 'sw 227' - Google Patents

Plante de stevia dénommée 'sw 227' Download PDF

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Publication number
WO2017172401A1
WO2017172401A1 PCT/US2017/023231 US2017023231W WO2017172401A1 WO 2017172401 A1 WO2017172401 A1 WO 2017172401A1 US 2017023231 W US2017023231 W US 2017023231W WO 2017172401 A1 WO2017172401 A1 WO 2017172401A1
Authority
WO
WIPO (PCT)
Prior art keywords
plant
stevia
leaves
line
rebaudioside
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2017/023231
Other languages
English (en)
Inventor
Clinton C. SHOCK
Cheryl A. PARRIS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
S&W Seed Co
Original Assignee
S&W Seed Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by S&W Seed Co filed Critical S&W Seed Co
Publication of WO2017172401A1 publication Critical patent/WO2017172401A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H5/00—Angiosperms, i.e. flowering plants, characterised by their plant parts; Angiosperms characterised otherwise than by their botanic taxonomy
    • A01H5/12—Leaves
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H5/00—Angiosperms, i.e. flowering plants, characterised by their plant parts; Angiosperms characterised otherwise than by their botanic taxonomy
    • A01H5/02—Flowers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H6/00—Angiosperms, i.e. flowering plants, characterised by their botanic taxonomy
    • A01H6/14—Asteraceae or Compositae, e.g. safflower, sunflower, artichoke or lettuce
    • A01H6/1488—Stevia

Definitions

  • Genus and species Stevia rebaudiana.
  • Stevia rebaudiana is a plant species in the sunflower (Asteraceae) family, which has naturally sweet leaves.
  • the active compounds that impart the sweet flavor to stevia leaves are steviol glycosides.
  • the most common steviol glycosides are stevioside and rebaudioside A, both of which have up to 250 to 400 times the sweetness of sugar.
  • Stevioside tends to be more prevalent in unimproved lines of stevia leaves than rebaudioside A.
  • the development of new varieties of Stevia rebaudiana with higher levels of rebaudioside A than stevioside is desirable for use as a sugar substitute.
  • the present invention relates to a new and distinct variety of Stevia rebaudiana, the 'SW 227' line, which has high plant vigor characterized by extensive stooling and branching; an excellent sweet leaf taste with very low bitterness and aftertaste; and leaves having an average rebaudioside A content of 10.7 %.
  • Table 1 provides averaged stevioside data for samples of the dry leaves of the ' SW 227' line.
  • Leaf Taste The leaves of the 'SW 227' line were found to have an excellent sweet taste in comparison to a majority of the plant population from which the line was derived and very little bitterness and aftertaste in comparison to most stevia varieties.
  • Dry Leaf Yield The 'SW 227' line producing 5500 kg/ha ( ⁇ 4907 lb/ac) of dry leaf yield based on six months growth (April to September) at Ontario, Oregon, USA in 2015.
  • Rebaudioside A content In 2015, the leaves of the ' SW 227' line were found to have a high percentage of rebaudioside A at 10.7 % (Table 1).
  • Stevioside content The leaves of the ' SW 227' line were found to have a low percentage of stevioside at just 1.4 % (Table 1).
  • Steviol Glycosides The leaves of the 'SW 227' line were found to have high levels of total steviol glycosides at 13.3 %, with rebaudioside A accounting for 80.4 % of the total steviol glycoside content in the leaves (Table 1).
  • Ratio of rebaudioside A to stevioside content The ratio of rebaudioside A to stevioside in the leaves of the 'SW 227' line was found to be high at 7.6 (Table 1).
  • the ' SW 227' stevia line was asexually reproduced from root cuttings derived from a single Stevia rebaudiana plant that was selected on October 5, 2014, at Ontario, Oregon and which was grown outdoors under full sunlight.
  • the parent plant was grown in 2013 from seed derived from a cross between the Stevia rebaudiana clone known as 'selection 395' (unpatented) and the 'SW 129' stevia line (patent pending).
  • the selection of the ' SW 227' line was based on evaluations of plant vigor, particularly plant stooling and branching; leaf taste; and rebaudioside A content.
  • the 2015 leaf harvest period in Ontario, Oregon for the 'SW 227' line was a single harvest in the fall or multiple harvests throughout the summer to early fall. Plant yield and leaf quality of the ' SW 227' line was confirmed throughout 2015 in Ontario, Oregon.
  • glycosides measured at 80.4 %
  • FIG. 1 is a color photograph of a fully mature ' SW 227' Stevia plant near the end of the plant's first growing season. The photograph shows the plant from roots to top of the plant.
  • FIG. 2 is a color photograph of a top view of a ' SW 227' Stevia plant. The photograph shows the plant's strong stooling habit.
  • FIG. 3 is a color photograph of a top view of a ' SW 227' Stevia plant. The photograph shows the plant's extensive branching.
  • FIG. 4 is a color photograph of the leaves of a ' SW 227' Stevia plant
  • FIG. 5 is a color photograph of a single leaf of a ' SW 227' Stevia plant. The photograph includes the dimensions of the leaf.
  • FIG. 6 is a color photograph of the flowers of an ' SW 227' Stevia plant.
  • Seed parent ' Selection 395' cloned by Clinton C. Shock and rooted in Ontario, Oregon.
  • Plant (description based on FIGS. 1, 2, and 3): Type. Perennial in climates with mild winter temperatures.
  • Width (including flowers). 60 cm.
  • Petiole length ⁇ 0.2 cm.
  • Petiole diameter ⁇ 0.02 cm.
  • Rebaudioside A content 10.7 %, with up to 14.3% observed.
  • Rebaudioside A as a percentage of total steviol glycosides. 80.4 %.
  • Ratio of rebaudioside A to stevioside 7.6.
  • Leaf harvest period A single harvest in fall or multiple harvests throughout summer to early fall in Ontario, Oregon.
  • Anther length ⁇ 0.4 cm.
  • Anther color RHS 199 A.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physiology (AREA)
  • Botany (AREA)
  • Developmental Biology & Embryology (AREA)
  • Environmental Sciences (AREA)
  • Natural Medicines & Medicinal Plants (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)

Abstract

L'invention concerne une plante nouvelle et distincte deStevia rebaudiana, dénommée SW 227. La nouvelle variété se distingue d'autres variétés de Stevia par une vigueur végétale importante caractérisée par une anatomie de plante ayant une souche-mère et des ramifications étendues ; un excellent goût de feuille sucrée avec une amertume et un arrière-goût très faibles ; et des feuilles ayant une teneur en rébaudioside A de 10,7 %. Des échantillons ont été recueillis avec une teneur totale en glycosides de stéviol de 13,3 %.
PCT/US2017/023231 2016-03-31 2017-03-20 Plante de stevia dénommée 'sw 227' Ceased WO2017172401A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201614999118A 2016-03-31 2016-03-31
US14/999,118 2016-03-31

Publications (1)

Publication Number Publication Date
WO2017172401A1 true WO2017172401A1 (fr) 2017-10-05

Family

ID=59966353

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2017/023231 Ceased WO2017172401A1 (fr) 2016-03-31 2017-03-20 Plante de stevia dénommée 'sw 227'

Country Status (1)

Country Link
WO (1) WO2017172401A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090214753A1 (en) * 2005-03-04 2009-08-27 Morita Kagaku Kogyo Co.Ltd. High Rebaudioside-A Plant
USPP23164P3 (en) * 2010-01-22 2012-11-06 Purecircle Sdn Bhd Stevia plant named ‘AKH L1’
USPP23728P3 (en) * 2010-01-22 2013-07-09 Purecircle Sdn Bhd Stevia plant named ‘AKH L4’
US20160057966A1 (en) * 2014-09-02 2016-03-03 Purecircle Sdn Bhd Stevia Cultivar '814011'
US20160057955A1 (en) * 2014-09-02 2016-03-03 Purecircle Sdn Bhd Stevia Cultivar '817096'
US20160057965A1 (en) * 2014-09-02 2016-03-03 Purecircle Sdn Bhd Stevia Cultivar '807086'

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090214753A1 (en) * 2005-03-04 2009-08-27 Morita Kagaku Kogyo Co.Ltd. High Rebaudioside-A Plant
USPP23164P3 (en) * 2010-01-22 2012-11-06 Purecircle Sdn Bhd Stevia plant named ‘AKH L1’
USPP23728P3 (en) * 2010-01-22 2013-07-09 Purecircle Sdn Bhd Stevia plant named ‘AKH L4’
US20160057966A1 (en) * 2014-09-02 2016-03-03 Purecircle Sdn Bhd Stevia Cultivar '814011'
US20160057955A1 (en) * 2014-09-02 2016-03-03 Purecircle Sdn Bhd Stevia Cultivar '817096'
US20160057965A1 (en) * 2014-09-02 2016-03-03 Purecircle Sdn Bhd Stevia Cultivar '807086'

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