Methods for modulating strobili development in gymnosperm trees

A gymnosperm and ball flower technology, applied in the field of regulating the development of ball flowers, can solve problems such as difficulties

Inactive Publication Date: 2014-02-19
WEYERHAEUSER NR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although high inoculation breeding is faster and less expensive than greenhouse breeding, it is still a challenge to complete breeding within 2 yea

Method used

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  • Methods for modulating strobili development in gymnosperm trees
  • Methods for modulating strobili development in gymnosperm trees
  • Methods for modulating strobili development in gymnosperm trees

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] This example describes a study conducted in 2006 (Study #1) to test seven isolation (i.e., protection) bag types of different sizes, colors, and materials of construction to determine their role in delaying female cone development in Loblolly pine. Whether there is any difference in effectiveness.

[0052] Methods and materials (#1 Study (2006))

[0053] In early February 2006, 2 breeding bags of each of the 7 bag types were installed on each of the two parent loblolly pine trees in the seed orchard: parent A (mid-development) and parent B (late development). In this study, the "middle late" parent was chosen due to delays in obtaining some bag material needed to start the study. The total number of bags installed is 2 parents x 7 bag types x 2 bags per tree = 28 bags. The 7 bag types and control treatments are described in Table 3 below.

[0054] Table 3: Barrier bag materials used in Study #1 (2006)

[0055]

[0056] figure 2 are photographs showing the vario...

Embodiment 2

[0080] This example describes a follow-up study #2 (2007) that was conducted to test other isolation (i.e. protection) bag types, all derivatives of the aluminum bag, in order to determine their effectiveness in delaying female flower development .

[0081] Fundamental :

[0082] A follow-up Study #2 (2007) to the study described in Example 1 was performed to (1) test other pouch types, some of which had an insulated type; The "early" phenotype parent C is added to the parent of , so as to have a full range of phenotypes; and (3) measure the temperature difference between the inside of the bag and the outside of the bag.

[0083] method : At the beginning of February, 2006, 2 breeding bags of each of 7 bag types were installed on each of the three parental trees (A, B, C). The total number of bags installed is: (3 parents x bag type x 2 bags per tree) = 42 bags. The 7 bag types used in this study are described in Table 6 below, and as figure 2 As shown in the photos p...

Embodiment 3

[0110] This example describes a follow-up study #3 (2008) that was conducted to determine the optimal time to install barrier bags to delay flower development.

[0111] Fundamental : In study #1 and #2, as described in Examples 1 and 2, respectively, we noticed that flower development was not completely delayed, and that flowers on some parents were not delayed as much as others. Therefore, this follow-up study #3 (2008) was conducted to determine the optimal time for installation to delay processing to achieve full delay.

[0112] method :

[0113] The 4 types of aluminum bags used in this study were:

[0114] (1) Paper hot dog bags laminated with thin aluminum foil;

[0115] (2) Paper hot dog bags laminated with thick aluminum foil;

[0116] (3) Aluminum foil packaging; and

[0117] (4) Aluminum foil packaging covered by a hot dog bag.

[0118] Treatments were performed on January 10 and February 7, 2008, and flower development was observed on March 6, 2008. All fl...

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Abstract

In one aspect, the invention provides a method of modulating the development stage of strobili growing on a gymnosperm tree comprising: (a) installing a protective covering over one more strobili bud(s), wherein the type of protective covering is selected to delay or advance strobili development; and (b) maintaining the protective covering over the strobili bud(s) for a time period sufficient to delay or advance the development stage of the covered strobili buds in comparison to the development stage of naturally growing, uncovered, control strobili.

Description

[0001] Cross References to Related Applications [0002] This application is entitled to and claims U.S. Official Patent Application Serial No. 13 / 173,229, filed June 30, 2011, entitled "Methods for Modulating Strobili Development in Ggymnosperm Trees" )", the contents of which are incorporated herein by reference. technical field [0003] The present invention relates to methods for modulating cone development in gymnosperm trees. Background technique [0004] Controlled pollination of forest trees, such as conifers, is used to generate families of known lineage for progeny testing and high-generation breeding. Rapid breeding of conifers such as loblolly pine after selection has been a challenge since tree species improvement programs began in the 1950s (see e.g. Zobel and Talbert, Applied Forest Tree Improvement, pp. Wiley, New York, 505 pp. (1984)). In the wild, grafts made on 1-year-old rootstocks do not produce enough cones (flowers) for breeding in 5 or more years. ...

Claims

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Application Information

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IPC IPC(8): A01G13/02
CPCA01G7/06A01G23/00
Inventor 罗伯特·C·珀内尔丹尼尔·F·莫罗利昂·伯里斯
Owner WEYERHAEUSER NR CO
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