EFFECT OF HARVEST DATE ON PERICARP THICKNESS IN DENT CORN

1970 ◽  
Vol 50 (4) ◽  
pp. 411-413 ◽  
Author(s):  
J. L. HELM ◽  
M. S. ZUBER
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Harvest Date ◽  
Individual Measurement ◽  
Physiological Maturity ◽  
Safe Storage ◽  
Dent Corn ◽  
Pericarp Thickness

Pericarp tissue was excised from mature dent corn (Zea mays L.) kernels harvested at physiological maturity, 30% moisture, and safe storage moisture, 15% moisture. There were significant differences in pericarp thickness among hybrids. Differences in thickness were significant at two individual measurement positions, but not on the overall mean thickness values. Thus, it appears that dent corn can be harvested at either 30% or 15% moisture with essentially similar pericarp thickness values, from excised pericarp strips.

IMPACT OF HUSK TYPE AND SPECIES OF INFESTING INSECTS ON AFLATOXIN CONTAMINATION IN PREHARVEST CORN AT TIFTON, GEORGIA

1987 ◽  
Vol 22 (4) ◽  
pp. 307-310 ◽  
Author(s):  
W. W. McMillian ◽  
N. W. Widstrom ◽  
D. M. Wilson
Keyword(s):  
Zea Mays ◽  
Aspergillus Flavus ◽  
Spodoptera Frugiperda ◽  
Ostrinia Nubilalis ◽  
Zea Mays L ◽  
Heliothis Zea ◽  
Aflatoxin Contamination ◽  
Sitophilus Zeamais ◽  
Corn Borers ◽  
Dent Corn

The use of plants that resist insects has been suggested as a potential means of reducing aflatoxin contamination in some crops. Dent corn, Zea mays L., germplasm possessing the characteristic of a relatively tight, complete husk cover and germplasm possessing the characteristic of a relatively loose, incomplete husk cover on the ear were evaluated for 3 years at Tifton, GA, for aflatoxin contamination. In two of the three test years, corn ears with tight, complete husk cover sustained significantly lower mean amounts of aflatoxin than ears with loose, incomplete husk cover following artificial inoculation with Aspergillus flavus Link spores. Ears hand-infested with maize weevils, Sitophilus zeamais (Motschulsky), sustained significantly higher amounts of aflatoxin (329 ng·g−1) than ears infested with fall armyworms, Spodoptera frugiperda (J. E. Smith), (80 ng·g−1), European corn borers, Ostrinia nubilalis (Hübner), (71 ng·g−1), or corn earworms Heliothis zea (Boddie) (60 ng·g−1). Overall, ears in the check (inoculated with A. flavus only) sustained significantly lower aflatoxin (37 ng·g−1) amounts than ears from plots supplemented with insects. Although insects were not applied in the check plots, some damage was observed on the ears.

DEVELOPMENTAL CHANGES IN PHYTOSTEROL AND PHYTOSTANOL COMPOSITION OF DENT CORN (ZEA MAYS L.) KERNEL FRACTIONS

2011 ◽  
Vol 35 (1) ◽  
pp. 260-277 ◽  
Author(s):  
SAOUSSEM HARRABI ◽  
SADOK BOUKHCHINA ◽  
HABIB KALLEL ◽  
PAUL M. MAYER
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Developmental Changes ◽  
Dent Corn

scholarly journals Chemical components of kernel quality in sh2 sweet corn genotypes (Zea mays L. saccharata Sturt.) as affected by harvest date

2020 ◽  
Vol 21 (3) ◽  
pp. 577-588
Author(s):  
Tatjana Ledenčan ◽  
Sanja Špoljarić Marković ◽  
Marija Viljevac Vuletić ◽  
Vlatko Galić ◽  
Antun Jambrović ◽  
...  
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Sweet Corn ◽  
Harvest Date ◽  
Chemical Components ◽  
Kernel Quality

scholarly journals Possibilities of selection and production of blue and ornamental corn (Zea mays L.)

2006 ◽  
pp. 15-19 ◽  
Author(s):  
Zoltán Bódi ◽  
Pál Pepó
Keyword(s):  
Zea Mays ◽  
Market Share ◽  
Food Industry ◽  
Zea Mays L ◽  
Industry Sector ◽  
Alternative Crops ◽  
Dent Corn ◽  
Iron And Zinc ◽  
World Agriculture ◽  
Blue Corn

The cultivation of alternative crops has an important role in world agriculture. Their market share is continuously growing in the food industry sector. In the present study, we show the cultivation and breeding perspectives of ornamental and blue corn. There exists possibility to cultivate ornamental corn in Hungary. There are many cultivars of ornamental corn, with various kernel colors, husks, stalks and leave colors. Blue corn is unique among other corns. Blue corn higher in protein, iron and zinc than commercial dent corn. Pests affective ornamental and blue corn are the same as those of other commercial corns. Ornamental and blue corns need to be grown a minimum of 500 m away from commercial yellow dent corn to minimize any cross pollination which may result in off-color kernel. Our aim in the presentation of this review was to broaden Hungarian literature.

Allocation and Retranslocation of 15N by Maize (Zea mays L.) Hybrids Under Field Conditions of Low and High N Fertility

1992 ◽  
Vol 19 (1) ◽  
pp. 77 ◽  
Author(s):  
RT Weiland ◽  
TC Ta
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Fertility Level ◽  
Potential Yield ◽  
N Accumulation ◽  
Physiological Maturity ◽  
Maize Hybrids ◽  
Vegetative Tissues ◽  
N Fertility ◽  
N Remobilisation

A field experiment was conducted with high and low N fertility regimes to evaluate root-absorbed 15N, and its subsequent remobilisation in four maize hybrids. In previous experiments, potential yield and patterns of senescence had varied among these hybrids. Individual plants were supplied with 15N at the 12-leaf stage and the uptake of the labelled N and its subsequent partitioning during successive harvests was followed. Grain yield and N accumulation at physiological maturity (PM) were reduced 20 and 40%, respectively, under low N compared with high N fertility. Neither hybrid type nor N fertility level initially affected the amount of lSN absorbed. Maximum 15N content was observed at mid grain-fill and a significant 10% loss of 15N from plants was found at PM. Compared with those under low N, plants cultured under high N maintained higher percentages of 15N in the lower stalk and roots over hybrids and across harvests. Kernels were a sink for remobilised 15N from all vegetative and 'other' reproductive tissues. Patterns of N remobilisation varied among different vegetative tissues. N was remobilised from stalks earlier than from leaves, while N from roots was remobilised throughout the season. Stalk and leaves were the major sources of 15N for kernels (about 45% each) while roots contributed much less. Physiological differences between the hybrid with the highest yield at both fertility levels, and with other hybrids, are discussed.

PHOTOSYNTHATE TRANSLOCATION IN TILLERED ZEA MAYS FOLLOWING 14CO2 ASSIMILATION

1975 ◽  
Vol 55 (2) ◽  
pp. 407-414 ◽  
Author(s):  
C. O. ALOFE ◽  
L. E. SCHRADER
Keyword(s):  
Zea Mays ◽  
Leaf Blade ◽  
Zea Mays L ◽  
Grain Filling ◽  
Physiological Maturity ◽  
Stage Of Development ◽  
14Co2 Assimilation ◽  
Source Sink ◽  
Photosynthate Translocation

Photosynthate translocation in field-grown corn (Zea mays L.) as influenced by tillering was studied by offering 14CO2 to a leaf blade on either the main stalk or tiller. Translocation from the labeled leaf blade of the main stalk or its tiller differed markedly depending upon stage of development at labeling and harvest. In plants assimilating 14CO2 before tasseling, little photosynthate was translocated from the labeled plant to the tiller, or conversely. When the ear leaf blade of the main plant was labeled with14CO2 4 days post-silking, the main ear and stalk were major sinks for 14C-assimilates until physiological maturity. When the tiller ear leaf blade was labeled, the tiller stalk was the major sink at first, but the tiller ear became a strong sink later. During grain filling, source-sink relationships were strongly dependent upon the presence of ears on the main plant, tiller, or both. When both had an ear, the developing ear on the labeled main plant or tiller was the major sink. When neither had an ear, the stalk of the labeled main plant or tiller was the major sink. When the labeled tiller had no ear, 14C-photosynthate was translocated to the ear on the main plant; an earless main plant also supplied the tiller ear.

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