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Intra- and interspecific pollination between Lupinus albus L., Lupinus mutabilis Sweet. and Lupinus angustifolius L.

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Przyborowski J. A., Samborska-Ciania A., Wiwart M.
Journal of Applied Genetics
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1996
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vol. 37
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issue 3
261-275
EN
The pollen grain germination and the growth of pollen tubes after intra and interspecific reciprocal polination of Lupinus albus L., Lupinus mutabilis Sweet. and Lupinus angustifolius L. were examined.Results of microscopic observations of pollen grain germination and pollen tube growth enable to deny the existence of certain barriers that prevent fertilization after pollination of L.albus flowers with pollen of L.angustifolius and vice versa, as well as after pollination of L.mutabilis flowers with pollen of L.angustifolius and vice versa.Some delay in pollen grain germination and a slower growth of pollen tubes were observed in all combinations, as related to intraspecific ones, though in case of each intrspecific combination pollen tubes reached the ovary.Moreover, a different level of pollination grain germination and pollen tube growth, depending on the direction of pollination, were found.The noted pollination efficiency may generally considered to be low.
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