Results 121 to 130 of about 45,173 (265)

Transport of glutamine into the xylem of sunflower (Helianthus annuus)

open access: yes, 1990
Sunflower (Helianthus annuus L.) plants were grown on nutrient solution with ammonium nitrogen. After 12 days of growth the ammonium in the nutrient solution was labeled with 15N (99%). Three hours later glutamine-N in the xylem exudate was labeled for 56% as shown by GC-MS; this percentage increased to 63% after 8, and to 69% after 24 hours of ...
Findenegg, G.R.   +3 more
openaire   +4 more sources

Análise da capacidade combinatória entre linhagens de girassol. [PDF]

open access: yes, 2011
A capacidade geral (CGC) e a capacidade específica de combinação (CEC), entre duas linhagens macho-estéreis (mãe) e um grupo de sete linhagens S4 restauradoras de fertilidade (pai), foram estimadas para estudar o potencial desses materiais em programas ...
ARIAS, C. A. A   +2 more
core  

The Pharmacological Effects Of Helianthus Annuus- A Review

open access: yes, 2018
Helianthus annuus was used as food and medicine worldwide. It was cultivated basically for its seeds, which give the world’s second most important source of edible oil. Phytochemical analysis showed that Helianthus annuus contained carbohydrates, phenolics, flavanoids, tannins, alkaloids, saponins, phytosterols, steroids, triterpenoids and fixed oils ...
openaire   +2 more sources

Chromosome Numbers in Certain Species of Helianthus [PDF]

open access: yes, 1931
The genus Helianthus is a comparatively large one, containing, according to Watson (13), 108 authentic and several doubtful species. These are arranged and classified by the taxonomist according to manifestations that are readily visible, but, if the ...
Geisler, Florence
core   +1 more source

Efeito de diferentes dosagens de Fe3+ na germinação do girassol. [PDF]

open access: yes, 2017
O ferro é um micronutriente importante para plantas, pois está ligado à fotossíntese, na assimilação de alguns nutrientes e ao balanço hormonal, entretanto, existe uma carência de estudos sobre esse micronutriente relacionando-o ao desenvolvimento ...
CERQUEIRA, A. A.   +5 more
core  

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