Status of the Amaranthus Seed Collection David M. Brenner North Central Regional Plant Introduction Station Department of Agronomy, Iowa State University.

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Presentation transcript:

Status of the Amaranthus Seed Collection David M. Brenner North Central Regional Plant Introduction Station Department of Agronomy, Iowa State University

Seed Jars

Tents

Amaranthus collection 3,345total accessions 3,193(94%) available 3,235(97%) backed up at the NCGRP 72seed orders packets distributed (15%) accessions distributed ,339(70%) have permanent PI numbers

National Plant Germplasm System GRIN (our web site)

Images and other data online

Diversity in Amaranthus Grain (three species) Vegetable (numerous species) Ornamental (four important species) Wild (most of the 70 species)

Amaranthus species 40 of the estimated 70 Amaranthus species Most recent Amaranthus ×tucsonensis from Arizona in 2010 (PI )

Super Dwarf Amaranthus caudatus

Plainsman beside a dwarf in 2004

Improved dwarf lines 2013

Amaranth Institute Missouri 2001 The weeds were not there the previous year The harvest was okay, not too many black weed seeds

Crop-weed hybrids

counting weedy off-types

% Crop-weed hybrid progeny Place ‘D136 ‒ 1’ ‘Plainsman’ East Lansing, MI Ames NE, IA Ames SW, IA Culver, IN 0.0 Rochester, IN Urbana, IL Butlerville, IN Columbia, MO Carbondale, IL TOTAL ‘D136-1’ has about 1/10 th as many as ‘Plainsman’

The long-day growth chamber 2012

Daylength Sensitivity

Two Planting Dates in 2013 June 14 versus August 1

Male Sterility Peters and Jain 1987 Plant breeding Aid F 1 hybrid vigor Are hybrid seeds wanted?

Green Vegetable and Grain xxx xx xxx

The End

Guinness World Record ft 1 in (4.61m) 2007: 27 ft 10 in, (8.48 m) Jesse Eldrid of New York

Biomass Dr. Muchna, Czech Republic Has 15 t/ha Wants 20 t/ha economic threshold for electric power generation Breed to increase dry mater from 15%

‘Pillar Orange’ and ‘Pillar Red’

National Plant Germplasm System

Gomphrena nealleyi

F 1 100% Male Sterile from PI X K432 Restore fertility?

Spaced Nursery 2003 Only short plants selected Bags for self pollination

Shattering

Stem boring insects

First frost

Amaranthus tricolor disease Phomopsis amaranticola Studied by Charlie Block Stem boring insects are also present

Tall Biomass DB 98246

dwarf 2008