Identification of bacteria isolated from roots of sunflower (Helianthus annuus) cultivated in a French soil

1991 ◽  
Vol 37 (12) ◽  
pp. 971-974 ◽  
Author(s):  
Jacques Fages ◽  
Benoit Lux
Keyword(s):  
Key Words ◽  
Helianthus Annuus ◽  
Azospirillum Lipoferum ◽  
Agrobacterium Radiobacter ◽  
Gram Negative ◽  
Helianthus Annuus L ◽  
Nitrogen Fixers ◽  
Identification Of Bacteria

The bacterial microflora of the rhizoplane and roots of sunflower (Helianthus annuus L.) grown in a French soil was examined. Gram-negative, oxidative isolates were dominant, among which Agrobacterium radiobacter and Pseudomonas vesicularis were the most common. Only 4 of the 45 isolates were nitrogen fixers (acetylene reducers), and they all belonged to the Azospirillum lipoferum species. Key words: sunflower, rhizoplane, Gram-negative isolates.

scholarly journals CRESCIMENTO E TEORES RELATIVOS DE CLOROFILA EM PLANTAS DE GIRASSOL SUPLEMENTADAS COM ALGAS MISTAS, Hypnea pseudomusciformis OU Ulva fasciata

Nativa ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 533-537
Author(s):  
Paulo Ovídio Batista de Brito ◽  
Gabriela De Sousa Ferreira ◽  
Francisco Ícaro Carvalho Aderaldo ◽  
Joana D'arck Farias Braga ◽  
Janacinta Nogueira De Souza ◽  
...  
Keyword(s):  
Plant Growth ◽  
Key Words ◽  
Helianthus Annuus ◽  
Production Costs ◽  
Viable Alternative ◽  
Sunflower Seeds ◽  
Organic Fertilization ◽  
Ulva Fasciata ◽  
Helianthus Annuus L ◽  
Volume Em

O trabalho objetivou analisar os efeitos da utilização das algas Hypnea pseudomusciformis, Ulva fasciata, e de algas mistas coletadas na Praia do Pacheco, Caucaia-CE sobre o crescimento de girassol (Helianthus annuus L.) avaliando-se: variáveis de crescimento e teores relativos de clorofila. O trabalho foi conduzido em casa de vegetação. As sementes de girassol foram semeadas em baldes de plástico com capacidade para cinco litros. O experimento foi dividido em oito tratamentos: areia (100% do volume em areia); areia + 100% da recomendação de nitrogênio (RN) em húmus; 100% da RN em algas mistas, 50% da RN em algas mistas; 100% da RN em Hypnea pseudomusciformis, 50% da RN em Hypnea pseudomusciformis, 100% da RN em Ulva fasciata e 50% da RN em Ulva fasciata. A utilização de algas arribadas ocasionou melhoria nas variáveis de crescimento analisadas em relação às plantas crescendo em substrato com areia ou areia + húmus. Os melhores resultados foram observados a 50% da RN em algas mistas. Dessa forma, a utilização de algas arribadas como fertilizantes apresentou-se como uma alternativa viável, gerando diminuição dos custos de produção. Palavras chave: Helianthus annuus L.; fertilização orgânica; macroalgas.   GROWTH AND RELATIVE CHLOROPHYLL LEVELS IN SUNFLOWER PLANTS SUPPLEMENTED WITH MIXED ALGAE - Hypnea pseudomusciformis OR Ulva fasciata   ABSTRACT: The work’s aim was to analyze the effects of the use of Hypnea pseudomusciformis, Ulva fasciata, and mixed algae, collected at Pacheco Beach, Caucaia-CE on sunflower (Helianthus annuus L.) plants evaluating: growth variables and relative chlorophyll levels. The work was conducted under greenhouse conditions. Sunflower seeds were sown in five-liter plastic buckets. The experiment was divided in eight treatments: sand (100% of the volume in sand); sand + 100% of nitrogen  recommendation (NR) in humus; 100% of NR in mixed algae, 50% of NR in mixed algae; 100% of NR in Hypnea pseudomusciformis, 50% of NR in Hypnea pseudomusciformis, 100% of NR in Ulva fasciata and 50% of NR in Ulva fasciata. The use of "arribadas algae" caused improvement in plant growth variables analyzed in comparison to plants growing on sand or sand + humus substrate. The best results were observed at 50% of NR in mixed algae. Thus, the use of "arribadas algae" as fertilizers presented itself as a viable alternative, generating reduction of production costs. Key words: Helianthus annuus L.; organic fertilization; macroalgae.

EFFECT OF PLANT DENSITY AND SOIL FERTILITY ON THE PERFORMANCE OF NONOIL SUNFLOWER

1986 ◽  
Vol 66 (3) ◽  
pp. 801-804
Author(s):  
G. H. GUBBELS ◽  
W. DEDIO
Keyword(s):  
Soil Fertility ◽  
Key Words ◽  
Helianthus Annuus ◽  
Plant Density ◽  
Helianthus Annuus L ◽  
Plant Densities

The nonoil sunflower (Helianthus annuus L.) cultivar Sundak was grown at four plant densities and two soil fertility levels for 3 yr in the Morden, Manitoba area. Fertilizer increased achene yield in 2 of the 3 yr and increased achene size in 1 of the 3 yr. Achene size and weight decreased with increase in plant density. Achene yield reached a maximum at approximately 30 000 plants ha−1.Key words: Nonoil sunflower, Helianthus annuus L., plant density, soil fertility

Heterosis and prediction of achene oil content in sunflower hybrids from parental lines

1993 ◽  
Vol 73 (3) ◽  
pp. 737-742 ◽  
Author(s):  
Walter Dedio
Keyword(s):  
Key Words ◽  
Helianthus Annuus ◽  
Multiple Regression ◽  
Oil Content ◽  
Regression Equations ◽  
Helianthus Annuus L ◽  
Kernel Oil ◽  
Oil Components ◽  
Parental Lines ◽  
Kernel Content

Oil content of the sunflower achene is determined by its components, namely kernel content and kernel oil content. The object of this study was to determine the heterosis and relative contributions of the parents to the achene oil, kernel oil and kernel content of the hybrid. Multiple regression equations showed that the two parents contribute equally to the achene oil content of the hybrids. Heterosis was observed in the kernel oil content and kernel content as well as the achene oil content. A heterotic effect of 47 g kg−1 over the mid-parent value was observed for achene oil content. For the achene oil components, heterotic effect of 44 g kg−1 was obtained for kernel oil content and 24 g kg−1 higher for kernel content. Key words: Sunflower, achene oil content, kernel oil content, kernel content, Helianthus annuus L., heterosis

THE PROBLEM OF SAFE SUNFLOWER (Helianthus annuus L.) USE FOR FOOD AND FODDER PURPOSES (review)

2018 ◽  
Vol 53 (3) ◽  
pp. 485-498
Author(s):  
G.P. Kononenko ◽  
◽  
M.I. Ustyuzhanina ◽  
A.A. Burkin ◽  
◽  
...  
Keyword(s):  
Helianthus Annuus ◽  
Helianthus Annuus L

Sunflowers (Helianthus annuus L.) on Top of a Constructed Wetland as an Engineered Ecosystem to Clean Sewage Onsite

2014 ◽  
Vol 2014 (2) ◽  
pp. 83-91
Author(s):  
Alfredo Garcia-Perez ◽  
◽  
Mark Harrison ◽  
Bill Grant ◽  
◽  
...  
Keyword(s):  
Helianthus Annuus ◽  
Constructed Wetland ◽  
Helianthus Annuus L
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