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Juniper2007OriginSweetApple (dragged) 6

Juniper2007OriginSweetApple (dragged) 6 - chloroplast...

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50 American Scientist, Volume 95 © 2007 Sigma Xi, The Scientific Research Society. Reproduction with permission only. Contact [email protected] it traveled west? Sporadically within the Tian Shan can be found Malus bac- cata . In Khirgistan can be found Malus khirgizorum . As the apple, this welcome economic migrant, reached eastern Eu- rope, it would have come within the range of M. trilobata in the Levant, with M. florentina in Italy and with M. syl- vestris over most of the more northern lands of western Europe. Yet it does not seem, as Els Coart with the Ag- ricultural Research Centre in Ghent and her colleagues discovered, that ei- ther by accident or by intent was there any significant gene flow between M. pumila and any other apple species. The timing of the flowering period of M. pumila is not dissimilar to any other apple species. The only feature unique to M. pumila among all species of Ma- lus seems to be that it lacks, or virtually lacks, an endosperm. This might, as Liliana Costa and her colleagues here
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