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Study of accessory chromosomes (Bs) transmission in Iranian leek (Allium ampeloprasum ssp.)

Hassan Mahdavikia, Jabber Panahandeh, Fariborz Zaare-nahandi

Department of Horticultural Sciences, Faculty of Agriculture, University of Tabriz, Tel: 98(411) 3392054, Tabriz, Iran

Key words: B Chromosomes, Transmission, Persian leek (Allium ampeloprasum), B chromosomes transmission rates.


allium_ampeloprasum_1Persian leek (Allium ampeloprasum ssp. Persicum) is deemed to be an Iranian native vegetable. In this research, B chromosomes transfer examined in progenies of a series of controlled crosses between female and male parent that were formerly isolated on the basis of the absence and presence of B chromosomes. The average of the expected and observed Mendelian transmission of B chromosomes was compared using the x² test. The results showed that the difference is not significant. However, the reduction in the number of B chromosomes were observed in most crosses and it was found that In two thirds of cases Transfer of B chromosomes was declined, Confirming that the estimated average rate of B chromosomes transfer were 0.42 between male and female lines Which is considerably lower than the expected Mendelian transmission rate(0.50). In general, the female gamete transfer rate (0.48) is higher than the male gamete (0.39), although this difference was not significant. The data presented here show that the transfer of B chromosomes in Allium ampeloprasum ssp. Persicum has not provided effective way to accumulate B chromosomes.


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