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Abstract Detail



Economic Botany Section

Adhikary, Dinesh [1], Pratt, Donald [2].

Seed character studies of Amaranthus species from the New World and the Old World.

Three species of Amaranthus (Amaranthus hypochondriacus L., A. cruentus L., and A. caudatus L.) were domesticated in the New World but were spread to the Old World where they became important crop plants. Seed of the cultivated amaranths varies for a number of discrete characteristics including seed coat pigmentation (pigmented or clear), seed opacity (translucent or opaque), and perisperm storage type (starchy or glutinous). We examined seed characters from three hundred and forty five accessions from all three grain species and their weedy progenitor A. hybridus, including accessions collected from both the New and Old World using two-way and three-way contingency tables. The data indicate that there are strong associations between seed characters, species, and location and that glutinous seeds are on average bigger and heavier than starchy seeds. We also found evidence of artificial selection for glutinous seeds in the Old World accessions. Additionally, we found that seed color appears to be a complex interaction between seed coat and perisperm storage type.

Broader Impacts:


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1 - Stephen F Austin State University, Biology, 3022 North Pecan Street, Apt # 401, Nacogdoches, TX, 75965, USA
2 - Stephen F. Austin State University, Box 13003 SFA Station, Nacogdoches, TX, 75962, USA

Keywords:
Amaranthus
Domestication
New World, Old World
Seed coat pigmentation
Glutinous and Non-glutinous.

Presentation Type: Oral Paper:Papers for Sections
Session: 1
Location: Napoleon Ballroom/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 10:30 AM
Number: 1010
Abstract ID:723
Candidate for Awards:Economic Botany Section best student paper


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