Fait partie de [OMC56]

2001 - 416 p.

Chromosome studies on pistachio (Pistacia vera L.) from Iran

Fasihi Harandi O., Ghaffari M.

Meiosis in this species was regular and showed 15 bivalents at the first metaphase. Most bivalents had two terminal chiasmata. The mean number of chiasmata was estimated at 1.35 for each bivalent at the first metaphase. One to five pairs of chromosomes were associated with the nucleolus in diakinesis. The observation of chromosomal behaviour suggests that the chromosomal coiling is very fast, zygotene chromosomes are short and thick and gathered around nucleolus like a synizetic knob. Because of this coiling of chromosomes we could not observe any marked difference, except for the presence of nucleolus between diakinesis and the first metaphase. Occasionally, in some cells, laggard chromosomes, univalent and multivalent chromosomes were observed. Mitotic studies approved the meiotic studies and the chromosome complement. In the interphase, two chromocentres were observed clearly, also observable in the prophase and metaphase. It seems that they are candidates for sex chromosomes in this taxon.



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Fasihi Harandi O., Ghaffari M. Chromosome studies on pistachio (Pistacia vera L.) from Iran. In : Ak B.E. (ed.). XI GREMPA Seminar on Pistachios and Almonds. Zaragoza : CIHEAM, 2001. p. 35-40. (Cahiers Options Méditerranéennes; n. 56). 11. GREMPA Seminar on Pistachios and Almonds, 1999/09/01-04, Sanliurfa (Turkey). http://om.ciheam.org/om/pdf/c56/01600149.pdf