Topic
Dent corn
About: Dent corn is a research topic. Over the lifetime, 443 publications have been published within this topic receiving 9127 citations. The topic is also known as: Dent corn.
Papers published on a yearly basis
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Papers
TL;DR: This study defines for the first time the endophytic nature of Microbacterium testaceum, which may be useful for biocontrol and other applications.
Abstract: Endophytic bacteria reside within plant hosts without causing disease symptoms. In this study, 853 endophytic strains were isolated from aerial tissues of four agronomic crop species and 27 prairie plant species. We determined several phenotypic properties and found approximately equal numbers of gram-negative and gram-positive isolates. In a greenhouse study, 28 of 86 prairie plant endophytes were found to colonize their original hosts at 42 days postinoculation at levels of 3.5 to 7.7 log(10) CFU/g (fresh weight). More comprehensive colonization studies were conducted with 373 corn and sorghum endophytes. In growth room studies, none of the isolates displayed pathogenicity, and 69 of the strains were recovered from corn or sorghum seedlings at levels of 8.3 log(10) CFU/plant or higher. Host range greenhouse studies demonstrated that 26 of 29 endophytes were recoverable from at least one host other than corn and sorghum at levels of up to 5.8 log(10) CFU/g (fresh weight). Long-range dent corn greenhouse studies and field trials with 17 wild-type strains and 14 antibiotic-resistant mutants demonstrated bacterial persistence at significant average colonization levels ranging between 3.4 and 6.1 log(10) CFU/g (fresh weight) up to 78 days postinoculation. Three prairie and three agronomic endophytes exhibiting the most promising levels of colonization and an ability to persist were identified as Cellulomonas, Clavibacter, Curtobacterium, and Microbacterium isolates by 16S rRNA gene sequence, fatty acid, and carbon source utilization analyses. This study defines for the first time the endophytic nature of Microbacterium testaceum. These microorganisms may be useful for biocontrol and other applications.
655 citations
TL;DR: The objectives were to gain understanding of this protected germplasm by utilizing pedigree information available in the U.S. Patent and PVPA records to enhance the use of this germplas in new line development as the lines become publicly available.
Abstract: Current corn (Zea mays L.) hybrids are produced using proprietary
inbred lines as parents. These proprietary lines are protected by U.S.
Patent and/or the U.S. Plant Variety Protection Act (PVPA) and their
use is restricted, but as protection expires these lines become available
to the entire corn breeding industry. Our objectives were to gain understanding
of this protected germplasm by utilizing pedigree information
available in the U.S. Patent and PVPA records to enhance the
use of this germplasm in new line development as the lines become
publicly available. Ownership, derivation, and lineage of corn inbred
lines protected by U.S. Patent or PVPA from 1980 to 2004 were surveyed.
Thirty-three companies have protected 908 corn inbred lines and
four of these companies: Dekalb Genetics (DK), Holden’s Foundation
Seeds (LH), Pioneer Hi-Bred (PH), and Syngenta (SG) originated 685
of them.We identified the most significant lines by their cumulative use
as parents in the development of new lines. Much of today’s germplasm
originates from seven progenitor lines: B73, LH82, LH123, PH207,
PH595, PHG39, and Mo17. The germplasm surveyed is grouped by
pedigree lineage into Oh43, Lancaster, Oh07-Midland, Iodent, Stiff
Stalk, Commercial hybrid derived, and Argentine Maiz Amargo backgrounds,
with new diversity emerging from the two latter groups. Recycling
elite inbred lines using two-parent crosses followed by pedigree
breeding was the most prevalent method of new line development.
233 citations
TL;DR: In this paper, Pop corn, dent corn and baby corn (dent type) grains were fractionated into different fractions on the basis of their size and the starches were separated from these fractions and evaluated for physicochemical, morphological, thermal and rheological properties.
200 citations
TL;DR: Historical records indicate that sweet corn (Zea mays L.) germplasm is largely derived from the Northern Flint race of corn, but most of the publicly available inbreds were derived from three cultivars: «Stowell's Evergreen», «Country Gentleman», and «Golden Bantam.
Abstract: Historical records indicate that sweet corn (Zea mays L.) germplasm is largely derived from the Northern Flint race of corn. In addition, most of the publicly available inbreds were derived from three cultivars: «Stowell's Evergreen», «Country Gentleman», and «Golden Bantam». In order to better understand sweet corn germplasm, 43 historically important sweet corn inbreds and three dent corn inbreds were examined by pedigree information, restriction fragment length palymorphisms (RFLPs), isozyme markers, and morphological traits. Data sets were developed from 71 RFLP probes, 17 isozyme loci, 14 morphological traits, and pedigree coefficients of relationship, and these data sets were subjected to cluster analysis (.)
188 citations
TL;DR: An HPLC method was developed using the C-30 carotenoid column to separate and identify the major xanthophylls in corn (lutein, zeaxanthin, and beta-cryptoxanthin) using a photodiode array detector and a mobile phase consisting of methyl tert-butyl ether/methanol/water.
Abstract: An HPLC method was developed using the C-30 carotenoid column to separate and identify the major xanthophylls in corn (lutein, zeaxanthin, and β-cryptoxanthin). A photodiode array detector and a mobile phase consisting of methyl tert-butyl ether/methanol/water was used. All three xanthophylls eluted in less than 25 min. Yellow dent corn had a total xanthophyll content of 21.97 μg/g with lutein content of 15.7 μg/g, zeaxanthin content of 5.7 μg/g, and β-cryptoxanthin of 0.57 μg/g. Commercial corn gluten meal had a 7 times higher concentration of xanthophylls (145 μg/g), and deoiled corn contained 18 μg/g, indicating that the xanthophylls are probably bound to the zein fraction of corn proteins. Keywords: Xanthophylls; lutein; zeaxanthin; corn; HPLC
184 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 12 |
| 2020 | 6 |
| 2019 | 10 |
| 2018 | 8 |
| 2017 | 6 |
| 2016 | 10 |