Results 141 to 150 of about 18,811 (181)
Some of the next articles are maybe not open access.
Nature, 1961
THE anormalis factor (Am Am) of Coffea arabica affects the size of the plant, its branching habit and its leaves, flowers, fruits and seeds. The internodes of the branches are shorter than in the typica variety, taken as standard. The leaves are extremely abnormal, often almost palmate and of various sizes.
openaire +1 more source
THE anormalis factor (Am Am) of Coffea arabica affects the size of the plant, its branching habit and its leaves, flowers, fruits and seeds. The internodes of the branches are shorter than in the typica variety, taken as standard. The leaves are extremely abnormal, often almost palmate and of various sizes.
openaire +1 more source
Shade adaptation of photosynthesis in Coffea arabica
Photosynthesis Research, 1984The effect of irradiance on the rate of net photosynthesis was measured for mature leaves of coffee grown under five levels of radiation from 100% to 5% daylight. The rate of light-saturated photosynthesis per unit leaf area (PNmax) increased from 2 μmol CO2 m(-2) s(-1) under 5% daylight to 4.4 μmol CO2 m(-2) s(-1) under 100% daylight.
openaire +2 more sources
A novel type of somatic embryogenesis in Coffea arabica
Plant Cell Reports, 1992A novel type of somatic embryogenesis characterized by an efficient and highly synchronized embryo formation was observed in embryogenic callus of Coffea arabica initiated on Murashige and Skoog medium containing kinetin (4 mg/l) and 2,4-D (1 mg/l). It occurs in suspension and goes along with the suppression of "High Frequency Somatic Embryo Induction"
Neuenschwander B, Baumann TW
openaire +3 more sources
Molecular Breeding in Coffee (Coffea Arabica L.)
2000The cultivated coffee Coffea arabica L. (2n=4x=44) is an allotetraploid species native to Africa, containing two diploid genomes that originated from two different diploid wild ancestors (2n=2x=22), C. canephora and C. eugenioides or ecotypes related to those species (Lashermes et al., 1999).
LASHERMES P +5 more
openaire +3 more sources
Phenotypic analysis of Coffea arabica accessions from Ethiopia: Contribution to the undestanding of Coffea arabica diversity [PDF]
, 2008 As a consequence of Coffea arabica domestication process, the genetic diversity of cultivated genotypes of this species is extremely restricted. According to this observation, FAO organized, in 1964-1965, surveys of spontaneous and subspontaneous genotypes in the main center of origin (Ethiopia).
Pot, David +6 more
openaire
Standardization of homeopathic Coffea arabica (Coffea cruda) and Coffea tosta matrix tinctures
Pharmaceutical Chemistry Journal, 2008Methods of standardization and quality control of homeopathic matrix tinctures of Coffea arabica and Coffea tosta obtained using green and roasted coffee beans are described. They include the organoleptic characteristics, qualitative reactions, TLC, quantitative estimation of caffeine and total phenolcarboxylic acids (calculated as caffeic acid ...
openaire +1 more source
Phylogenomic analysis clarifies the evolutionary origin of Coffea arabica
Journal of Systematics and Evolution, 2021Isabel Roldán-Ruiz +2 more
exaly