86 research outputs found
Action of (2-chloroethyl) trimethylammonium chloride, 2,4-dichlorobenzyl-tributylphosphonium chloride, and N-dimenthyl-amino-succinamic acid on IAA and coumarin induced growth of sunflower hypocotyl sections
Efeito de várias disponibilidades hídricas, atuando como pré-condicionamento fisiológico durante a germinação das sementes de milho, no desenvolvimento das plântulas
The present paper considers the possible effects of physiological pre-treatment during the beginning of corn seeds germination in environments variable as to water availability (0 to -12 atm ). Periods of defficiency followed by 5 days without hydric limitations were compared with a control that remained equally, without reservations as to the disposability of water during 5 days. Results indicated that hydric pre-treatment of seeds can, if property adapted in its details, provide some advantages in the development of the seedlings derived from them. Chemical fungicide treatment of the seeds, submmited to the hydric pre-treatment may not be beneficial to the seedlings; as indicated by, in some isolated cases, the production of abnormalities in the embryonic structures.O presente trabalho buscou estimar os eventuais efeitos de pré-condicionamento fisiológico promovidos, durante o início da germinação das sementes de milho, por ambientes variáveis quanto à disponibilidade de água (0 a -12 atm). Para tanto, os períodos de deficiência eram sucedidos por prazos fixos de 5 dias sem limitações hídricas e comparados com uma testemunha que permaneceu, igualmente, sem restrições quanto à disponibilidade de água durante 5 dias. Os resultados encontrados indicaram que a técnica de pré-condicionamento hídrico das sementes pode, se devidamente adaptada em seus detalhes, propiciar algumas vantagens no desenvolvimento das plântulas delas oriundas. Adicionalmente, o tratamento químico fungicida das sementes, submetidas a pré-condicionamento hídrico, pode não trazer os benefícios esperados às plântulas; há casos isolados, ligados a produção de anormalidades nas estruturas embrionárias, em que o seu efeito é prejudicial
Action of (2-chloroethyl) trimethylammonium chloride, 2,4-dichlorobenzyl-tributylphosphonium chloride, and N-dimenthyl-amino-succinamic acid on IAA and coumarin induced growth of sunflower hypocotyl sections
Control of shoot growth in Agrostemma githago L. by 4,4-dimethylmorpholinium chloride and related compounds
4,4-Dimethylmorpholinium chloride and (2-chloroethyl)-trimethylammonium chloride retarded shoot growth in Agrostemma githago L. This effect was nullified by gibberellin. 4,4-Dimethyl-2-oxomorpholinium chloride and 4,4-diethyl-2-oxomorpholinium chloride slightly stimulated shoot growth
Inhibition of chlorophyll disappearance in senescing leaf tissues by coumarin and growth retardants
Coumarin- and indole-S-acetic acid-induced growth and respiration in sunflower as affected by 2-chloroethyl trimethylammonium chloride, actinomycin C1, puromycin and diazouracil
Kinetin and gibberellin reversal of the synergistic inhibition of germination of the seed of kale, Brassica oleracea L. var. acephala, by AMO-1618 and coumarin
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