Phenological growth stages of olive trees (Olea europaea)

2002 ◽  
Vol 140 (2) ◽  
pp. 151-157 ◽  
Author(s):  
F SANZ-CORTES ◽  
J MARTINEZ-CALVO ◽  
M L BADENES ◽  
H BLEIHOLDER ◽  
H HACK ◽  
...  
2021 ◽  
Vol 185 ◽  
pp. 112695
Author(s):  
Maria Celeste Dias ◽  
Diana C.G.A. Pinto ◽  
Catarina Figueiredo ◽  
Conceição Santos ◽  
Artur M.S. Silva

2017 ◽  
Vol 4 ◽  
pp. 23
Author(s):  
Ε.Ν. Hatzinikolis

This paper deals with the tenuipalpid mites which are associated with olive trees and an account is given of their distribution, hosts, and bio-ecology. A key is provided to the species of Brevipalpus occurring on the genus Olea.


2016 ◽  
Vol 131 ◽  
pp. 20-28 ◽  
Author(s):  
Feten Aissaoui ◽  
Hechmi Chehab ◽  
Besma Bader ◽  
Angham Ben Salem ◽  
Naouraz M’barki ◽  
...  

Genome ◽  
2003 ◽  
Vol 46 (3) ◽  
pp. 377-381 ◽  
Author(s):  
Angel García-Díaz ◽  
Ricardo Oya ◽  
Antonio Sánchez ◽  
Francisco Luque

The inheritance of mitochondrial and chloroplast genomes does not follow Mendelian laws, but proceeds by vegetative segregation. Most organisms show organelle homoplasmy, which is probably produced and maintained during sexual reproduction. We have tested the effect of prolonged vegetative multiplication in the maintenance of mitochondrial homoplasmy and the generation of heteroplasmy in cultivated olive trees, Olea europaea L. Seven trees, each representing a different variety of olive, were analysed by the study of an intergenic spacer region of the mitochondrial genome. A very high level of heteroplasmy was detected in all cases. We found multiple genome variants of the sequence analysed. The frequency of genomes with no changes in the spacer region was 11.5%. This means that 88.5% of genomes contain at least one change. The same spacer mitochondrial region was sequenced in several clones from four olive trees of a second generation of sexually reproduced trees. In these trees, many clones were identical and had no changes, which represents a clear reduction of the heteroplasmy (p < 0.001). Therefore, this work supports the relevance of the role of sexual reproduction in the maintenance of mitochondrial homoplasmy and also shows that mutations accumulate in a non-coding sequence of the mitochondrial genome when vegetative propagation is maintained for a long period of time.Key words: mitochondrial genome, homoplasmy, heteroplasmy, olive trees, vegetative reproduction, sexual reproduction.


Trees ◽  
2010 ◽  
Vol 24 (6) ◽  
pp. 1137-1142 ◽  
Author(s):  
Mokhtar Guerfel ◽  
Youssef Ouni ◽  
Dalenda Boujnah ◽  
Mokhtar Zarrouk

2014 ◽  
pp. 455-461 ◽  
Author(s):  
L. Rossi ◽  
L. Sebastiani ◽  
R. d'Andria ◽  
G. Morelli ◽  
R. Tognetti ◽  
...  

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