Flower pigmentation in pelargonium hortorum

a technology of pelargonium hortorum and pigmentation, which is applied in the field of new zonal geranium plants, can solve the problems of demise of crop, old procedures are impractical, and scented geraniums are usually not grown

Inactive Publication Date: 2011-02-17
SYNGENTA PARTICIPATIONS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While some varieties do occasionally bloom, scented geraniums usually are not grown for their flowers.
The economics of greenhouse space utilization combined with the development of “fast cropping” made the old procedures impractical.
The development of serious systematic diseases almost always lead to the demise of the crop, mainly Xanthomonas campestris pv.
In other cases, barriers to combinability exist between species.
However, these techniques do not overcome the problem of chromosome mismatching and loss of chromosomes during meiosis and mitosis, barriers commonly encountered in interspecific crosses.
Sexual reproduction between individuals with different chromosome numbers, often the case in interspecific crosses, can be problematic.
If the chromosome number of the parents is different, chromosome pairing does not occur correctly.
Finding these 2n-gametes can be very difficult and time-consuming.
The complexity of inheritance influences choice of the breeding method.
Therefore, development of new cultivars is a time-consuming process that requires precise forward planning, efficient use of resources, and a minimum of changes in direction.
A most difficult task is the identification of individuals that are genetically superior, because for most traits the true genotypic value is masked by other confounding plant traits or environmental factors.
Other limitations of the related art will become apparent to those of skill in the art upon a reading of the specification.

Method used

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  • Flower pigmentation in pelargonium hortorum
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  • Flower pigmentation in pelargonium hortorum

Examples

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example 1

Development of the Plants of the Present Invention by Introgressing Traits from P. peltatum to P. hortorum

[0055]The dark red to burgundy or darker petal colors of the plants of the present invention are the result of many generations of crossing and selecting plants of Pelargonium hortorum crossed with Pelargonium peltatum. The breeding process involved 14 generations of crosses and selections, using at least 10 different ivy geraniums in the process. The unique colors in the zonal interspecific plants of the present invention are derived from ivy geraniums (Pelargonium peltatum). Because ivy geraniums usually cannot be successfully grown in full-sun and are sensitive to the physiological disease known as edema, the new zonal interspecific plants of the present invention are a new and novel development.

[0056]The process of breeding and selecting the zonal interspecific plants of the present invention has resulted in plants that have the utility of both a zonal geranium and an ivy g...

example 2

Differences in Plant and Height Width Between Plants of the Present Invention and Americana Dark Red

[0059]Table 1 compares the differences in plant width and plant height between 2 selections of the present invention and the commercial zonal geranium variety, ‘Americana Dark Red’. ‘10426-1’ is a trailing dark red selection of the present invention and ‘10612-1’ is a dark red trailing selection of the present invention. The plant widths and heights were taken in a cultivated field in Gilroy Calif. on Oct. 18, 2007. Columns one and two show the plant width and height in inches of selection ‘10426-1’ of the present invention, columns three and four show the plant width and plant height in inches of selection ‘10612-1’ of the present invention and columns 5 and 6 show the plant width and height of zonal geranium ‘Americana Dark Red’. Rows 18 and 19 show the averages and the standard deviation. Note that the selections of the present inventions have an unexpectedly greater plant width th...

example 3

Anthocyanin Analysis of Pelargonium Petals

[0060]Flower petals can be analyzed for their anthocyanin content. Methods for anthocyanin analysis are well-known in the art. Please See Zhang, Z., et al., J. Agric. Food Chem. (2004) 52:688-691 and Kazuma, K., et al., Phytochemistry (2004) 62: 229-237. Sample methods of analysis include a comparison of HPLC profiles of the hydrolysates with anthocyanidin standards, with spectrophotometric quantification of anthocyanins as their aglycons.

[0061]Flower tissue from 10 different Pelargonium cultivars was analyzed to determine the flavonoid and anthocyanin content in the dried petal tissue. The ten Pelargonium cultivars tested were: ‘Diablo’ (zonal geranium), ‘Tango Dark Red’ (zonal geranium), ‘Rocky Mountain Dark Red’ (zonal geranium), ‘Tango 09’ (zonal geranium), ‘Designer Dark Red’ (zonal geranium), ‘Samba’ (zonal geranium), ‘Calliope Dark Red’ (zonal-looking geranium with zonal interspecific background), ‘Freestyle Dark Red’ (ivy geranium), ...

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Abstract

The present invention relates to novel Pelargonium hortorum-interspecific plants having dark red to burgundy or darker pigmented flower petal, a trailing growth habit, dark leaf color and tolerance to high temperatures, high light and edema. The present invention also relates to methods for creating novel Pelargonium hortorum-interspecific hybrid plants having dark red to burgundy or darker pigmented flower petals, a trailing growth habit and tolerance to high temperatures, high light and edema.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a divisional of U.S. patent application Ser. No. 12 / 270,716, which is a nonprovisional and claims priority under 35 U.S.C. §119 to U.S. Provisional Application Ser. No. 60 / 988,364, filed Nov. 15, 2007, which is incorporated herein in their entirety by reference.BACKGROUND OF THE INVENTION[0002]The present invention relates to novel zonal geranium plants, Pelargonium hortorum-interspecific, having a trailing habit and dark-red to burgundy pigmented flower petals, a growth habit similar to an ivy geranium, green leaf color, tolerance to high light and temperature and non-sensitivity to edema. The present invention also relates to methods for creating novel Pelargonium hortorum-interspecific plants having pigmented flower petals. The present invention relates to a new and distinctive method of combining Pelargonium plants to produce new, distinct interspecific Pelargonium varieties. All publications cited in this applicat...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A01H1/02A01H5/00
CPCA01H5/0277A01H5/02A01H6/42
Inventor HANES, MITCHELL E.
Owner SYNGENTA PARTICIPATIONS AG
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