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Soybean having epistatic genes affecting yield

An allele and gene technology, applied in the field of soybeans with epistatic genes that affect yield, can solve the problems of affecting height and plant height having no obvious effect

Inactive Publication Date: 2000-07-26
UTAH STATE UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, several loci were identified that alone had no apparent effect on plant height, but where one allele did affect height controlled by another locus

Method used

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  • Soybean having epistatic genes affecting yield
  • Soybean having epistatic genes affecting yield
  • Soybean having epistatic genes affecting yield

Examples

Experimental program
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Effect test

Embodiment 1

[0088] During screening of the soybean 'Archer' X'Noir 1' RI population for epistatic effects on yield, a surprise was found between the first locus linked to T153a and B172 and the second locus linked to Satt207 strong interaction. Plot the data as a series of cumulative distribution graphs, as shown in Figure 1. Data are combined yield results from all field trials including test plots in Minnesota and Chile. The horizontal axis of panel B is the standard distribution curve for yield (bu / ac) as a function of plant number. Panels B-E are cumulative distribution curves in which yield (horizontal axis) is plotted against each plant yield class. In panel A, all plants containing the 'Archer' allele of T153a (A) or the 'Noir 1' allele of T153a (B) are plotted as separate curves. An essentially normal distribution was found in yield tests.

[0089] The average production (bu / ac) of these two subpopulations is listed above the graph. In examining these data, it is important to...

Embodiment 2

[0097] In this and the following examples, markers designated by "Satt" or "Sat" before the numbers are microsatellite (microsattelite) DNA markers isolated from the Agricultural Research Council of the United States Department of Agriculture, available by request to Dr. Perry, Cregan, Available from USDA-ARS, Beltsville, MD [Cregan, P. et al. (1998) Genomics]. Markers A397, A489 and K011c were obtained from Biogenetic Services, Inc. (supra).

[0098] Determining maturity (days from planting to maturity) by plant height (cm) in the 'Minsoy'X'Noir 1' RI population revealed a pair of interacting QTLs, one linked to the marker Satt307, The other is linked to marker K011c. For dwarf, late-maturing plants, a higher maturity / height ratio is obtained. For tall precocious plants, lower maturity / height ratios were obtained. Figure 18A The cumulative distribution curve shown in -D shows the interaction between the two QTTs, Figure 18A The distribution of plants carrying the 'Noir ...

Embodiment 3

[0101] A pair of interacting loci affecting grain protein content was identified in the 'Archer' X 'Minsoy' RI population. They are linked to markers Sat_001 (modifier locus) and Satt001, respectively. Field data were obtained from a 1997 Minnesota field trial. This interaction is represented by an LLR value of 11.20. The cumulative distribution is shown in Figure 7.

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Abstract

A method of plant breeding applicable to self-pollinating plants, and plants produced by use of the method, includes the use of molecular markers linked to interacting loci that affect traits of agronomic value. The method allows one to identify a first molecular marker linked to a quantitative trait locus (QTL) and a second molecular marker linked to a modifying locus having an epistatic effect in combination with the QTL. Conventional breeding steps can then be used to introgress the interacting loci into other plant varieties.

Description

[0001] Related Application Cross Documentation [0002] This application claims priority to US Provisional Application No. 60 / 045,421, filed May 2, 1997, and US Patent Application, filed April 30, 1998 (application numbers not yet assigned). [0003] Statement Regarding Federally Sponsored Research and Development [0004] Research on the present invention was supported in part by National Institutes of Health grant GM42337. The US Government has certain rights in this invention. Background of the invention [0005] Agricultural traits of major concern to plant breeders of field crops are eg plant height, time to germination, time to maturity, crop yield, disease resistance, resistance to environmental stress, etc. These traits are rarely controlled by a single gene, or not controlled by a single gene. Rather, traits are usually controlled by genes whose effects are reluctantly quantitative, that is, whose ...

Claims

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Application Information

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IPC IPC(8): A01H1/04A01H5/10C12Q1/68
CPCA01H1/04C12Q1/6895A01H5/10C12Q2600/13C12Q2600/156A01H6/542
Inventor K·G·拉克J·奥福K·蔡斯F·阿德莱尔
Owner UTAH STATE UNIVERSITY
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