scholarly journals Early corn seedling growth response to phenolic acids

1997 ◽  
Vol 77 (3) ◽  
pp. 391-393 ◽  
Author(s):  
K. J. Janovicek ◽  
T. J. Vyn ◽  
R. P. Voroney ◽  
O. B. Allen
Keyword(s):  
Zea Mays ◽  
Growth Inhibition ◽  
Phenolic Acids ◽  
Phenolic Acid ◽  
Growth Response ◽  
Zea Mays L ◽  
Radicle Growth ◽  
Corn Seedling ◽  
Hydroxybenzoic Acids ◽  
Ferulic Acids

Phenolic (vanillic, p-coumaric, ferulic and p-hydroxybenzoic) acids inhibited corn seedling radicle elongation in bioassay studies, especially at solution concentrations exceeding 1.0 × 10−4M. Radicle growth inhibition among hybrids was different when p-coumaric or ferulic acids were assayed, suggesting that corn sensitivity to phenolic acid phytotoxicity may be hybrid dependent. Key words: Allelopathy, phenolic acids, radicle growth inhibition, corn, Zea mays L., hybrid response

Early corn seedling growth response to acetic, propionic and butyric acids

1997 ◽  
Vol 77 (3) ◽  
pp. 333-337 ◽  
Author(s):  
K. J. Janovicek ◽  
T. J. Vyn ◽  
R. P. Voroney ◽  
O. B. Allen
Keyword(s):  
Growth Inhibition ◽  
Growth Response ◽  
Plant Residue ◽  
Plant Residues ◽  
Solution Ph ◽  
Corn Hybrids ◽  
Radicle Growth ◽  
Acid Type ◽  
Corn Seedling ◽  
Corn Hybrid

Corn (Zea mays L.) responses to crop rotation, tillage practice and/or plant residue placement may be due to differential production of acetic, propionic and butyric acids which are associated with the anaerobic decomposition of plant residues. To evaluate early corn growth response to acetic, propionic and butyric acids, a series of bioassays was conducted in which seeds of three commercially available corn hybrids, Pioneer 3737, Pioneer 3949 and Hyland 2260, were germinated and allowed to develop in solutions containing these acids alone or in combination at four concentrations (1.0 ×10−4 M, 1.0 × 10−3 M, 5.0 ×10−3 M, and 1.0 × 10−2 M) which were adjusted to two solution pH levels (4.5 and 7.5). None of the acids or acid mixtures tested affected seed germination. However, all three acids inhibited corn radicle growth. The magnitude of inhibition was butyric > propionic > acetic. Reducing solution pH tended to increase the degree of radicle growth inhibition. Particularly with propionic and butyric acids, the extent of radicle growth inhibition was affected by hybrid. Results indicated early corn growth inhibition associated with these acids is affected by acid type, acid concentration, solution pH and corn hybrid. Key words: Allelopathy, acetic, propionic, butyric, corn, hybrid response

Photosynthesis and growth response of maize (Zea mays L.) hybrids exposed to cadmium stress

2016 ◽  
Vol 24 (6) ◽  
pp. 5521-5529 ◽  
Author(s):  
Tasneem Akhtar ◽  
Muhammad Zia-ur-Rehman ◽  
Asif Naeem ◽  
Rab Nawaz ◽  
Shafaqat Ali ◽  
...  
Keyword(s):  
Zea Mays ◽  
Growth Response ◽  
Zea Mays L ◽  
Cadmium Stress

scholarly journals Evaluation of dissipation mechanisms for pyrene by maize (Zea Mays L.) in cadmium co-contaminated soil

2013 ◽  
Vol 11 (4) ◽  
pp. 487-496
Keyword(s):  
Zea Mays ◽  
Contaminated Soil ◽  
Growth Response ◽  
Zea Mays L ◽  
Plant Root ◽  
Complex Problem ◽  
Soil P ◽  
Metal Pollutants ◽  
Rhizosphere Microorganisms ◽  
Unplanted Soil

Sites co-contaminated with organic and metal pollutants are common and considered to be a more complex problem, as the two components often have a synergistic effect on cytotoxicity. This study investigated the dissipation mechnisms for pyrene in cadmium co-contaminated soil in which maize (ZEA MAYS L.) was grown in a greenhouse experiment. Results showed the growth response of maize may be affected by the co-contamination due to the interaction between the heavy metal and organic pollutants. Pyrene in both planted and unplanted soil diminished significantly at the end of 60-day culture, accounting for 21-31% of the initial extractable concentration in unplanted soil and 12-27% in planted soil, which indicated that the dissipation of pyrene was enhanced by the presence of vegetation. Although the presence of cadmium stimulated the accumulation of pyrene in roots and shoots of maize, contributions of plant off-take of pyrene to the total remediation enhancement in the presence of vegetation was less than 0.3%. A significant positive correlation was observed between soil enzyme activities (dehydrogenase, polyphenol oxidase) and the removal ratio of pyrene. Plant root exudates appear to promote the number of rhizosphere microorganisms and enzyme activity, thereby improving biodegradation of pyrene.

MAGNETISM AND PLANT GROWTH: III. EFFECT ON GERMINATION AND EARLY GROWTH OF CORN AND BEANS

1965 ◽  
Vol 45 (6) ◽  
pp. 549-555 ◽  
Author(s):  
U. J. Pittman
Keyword(s):  
Magnetic Field ◽  
Zea Mays ◽  
Phaseolus Vulgaris ◽  
Plant Growth ◽  
Seedling Growth ◽  
Growth Response ◽  
Zea Mays L ◽  
Early Growth ◽  
Phaseolus Vulgaris L

Speed of germination and seedling growth of corn Zea mays L. and beans Phaseolus vulgaris L. were affected by pregermination exposure of the dry seed to an introduced magnetic field. Seed orientation and duration of pregermination exposure as well as temperature and seed orientation during germination affected total visible seedling growth. An endogenous, non-circadian growth response is indicated.

Safeners as Corn Seedling Protectants against Acetolactate Synthase Inhibitors

1991 ◽  
Vol 46 (11-12) ◽  
pp. 945-949
Author(s):  
Henri Milhomme ◽  
Christophe Roux ◽  
Jean Bastide
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Acetolactate Synthase ◽  
Large Degree ◽  
Naphthalic Anhydride ◽  
Metsulfuron Methyl ◽  
Corn Seedling

Zea mays L., cv. Potro, shoots had a higher level of resistance to imazaquin (IQ) and metsulfuron methyl (M SM ) than roots. Shoot lengths were increased by pretreating the seeds with commercial 1,8 -naphthalic anhydride (N A ) at 1% (w/w) or oxabetrinil at 0.2% (w/w). The growth of shoots of safened seeds was unaffected by 400 nM IQ and by 40 nM MSM. The in vivo activity of acetolactate synthase (ALS) extracted from corn shoots and roots was not affected by treatments with IQ or MSM, but pretreatment of seeds with NA or oxabetrinil, prior to germination, caused an increase in the level of extractable ALS from shoots. ALS activity from roots and shoots of NA-pretreated seedlings was increased to a large degree (> 40% ) when the seedlings were germinated on 40 nM MSM, whereas ALS activities from oxabetrinil-pretreated seedlings were enhanced to a lesser degree (≈20%). ALS from unsafened seedlings was inhibited 21% by 400 nM IQ and 70% by 40 nM MSM in vitro, but ALS from roots of seedlings germinated on 400 nM IQ was not inhibited by 400 nM IQ in vitro.

Sign in / Sign up

Export Citation Format

Share Document