Esterase activities during chick embryonic development and its relationship with the metabolism of 2,4-dichlorophenoxyacetic acid butyl ester

1992 ◽  
Vol 49 (4) ◽  
pp. 520-526 ◽  
Author(s):  
Stella Castro de Cantarini ◽  
Ricardo Duffard ◽  
Ana Evangelista de Duffard
2010 ◽  
Vol 46 (2) ◽  
pp. 175-180 ◽  
Author(s):  
Changpeng Zhang ◽  
Xingang Liu ◽  
Fengshou Dong ◽  
Jun Xu ◽  
Yongquan Zheng ◽  
...  

1985 ◽  
Vol 57 (4) ◽  
pp. 231-236 ◽  
Author(s):  
Gene E. Schulze ◽  
J. W. Blake ◽  
John A. Dougherty

HortScience ◽  
1992 ◽  
Vol 27 (1) ◽  
pp. 63-65 ◽  
Author(s):  
Les Frey ◽  
Yehoshua Saranga ◽  
Jules Janick

Somatic embryogenesis was induced from internodal callus of `Scania', `Improved White Sim', and `Sandra' carnation (Dianthus caryophyllus L.). The optimum protocol for the induction of somatic embryogenesis included initiation of callus in liquid basal Murashige and Skoog medium supplemented with 3.0 μm 2,4-D followed by transfer to liquid basal medium lacking 2,4-D for embryo development. Somatic embryos originated from single cells and early embryonic development proceeded conventionally (i.e., via globular, heart-shaped, and torpedo stages), but clearly developed apical or root meristems were not always formed. A few embryos developed into seedlings and were acclimatized to ex vitro conditions. Chemical name used: 2,4-dichlorophenoxyacetic acid (2,4-D).


1950 ◽  
Vol 1 (4) ◽  
pp. 401 ◽  
Author(s):  
RM Moore

The effects of foliage sprays of various phenoxyacetic acid derivatives and of isopropyl n-phenylcarbamate on a dicotyledon, Phaseolus vulgaris, were compared. The carbamate was without effect and although all phenoxyacetic acid compounds were markedly toxic, they differed in the rapidity of their action. Wheat (Triticum vulgare) exhibited differential responses to phenoxyacetic acid compounds and to isopropyl phenylcarbaniate at different growth stages. Applications of four phenoxyacetic acid compounds to wheat at different stages of development, from late seedling to flowering, showed that grain yields were reduced most markedly by applications in the seedling stage; the butyl ester and amine salt of 2,4-dichlorophenoxyacetic acid were more toxic than the sodium salt. 0.1 per cent. foliage sprays of isopropyl phenylcarbamate had no effect on wheat in the late seedling or tillering stages, but severely depressed the yield of grain when applied at flowering. Barley (Hordeum vulgare) responded similarly. Higher concentrations applied to wheat at pre-shooting also reduced grain yields. Flax (Linum sitatissimum), although susceptible to pre-emergence treatment, was not affected by foliage sprays of isopropyl phenylcarbamate at any growth-stage. 0.1 per cent. applications of 2,4-dichlorophenoxyacetic acid as the sodium salt reduced flax yields only when applied at the seedling stage.


Author(s):  
AnaMar�a Evangelista de Duffard ◽  
Adriana Fabra de Peretti ◽  
Stella Castro de Cantarini ◽  
Ricardo Duffard

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