Transactions of KarRC RAS :: Scientific publications
Transactions of KarRC RAS :: Scientific publications

Transactions of KarRC RAS :: Scientific publications
Karelian Research Centre of RAS
ISSN (print): 1997-3217
ISSN (online): 2312-4504
Transactions of KarRC RAS :: Scientific publications
Background Editorial committee Editorial Office For authors For reviewer Russian version
Transactions of KarRC RAS :: Scientific publications

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SCIENTIFIC PUBLICATIONS
Т.С. Николаевская, Л.В. Ветчинникова, А.Ф. Титов, О.Н. Лебедева.
Изучение пыльцы у аборигенных и интродуцированных в условия Карелии представителей рода Betula L
// Труды КарНЦ РАН. No 4. Сер. Биогеография. Вып. 9. 2009. C. 90-95
T.S. Nikolaevskaya, L.V. Vetchinnikova, A.F. Titov, O.N. Lebedeva. Study of pollen in native and introduced Betula L. species in Karelia // Transactions of Karelian Research Centre of Russian Academy of Science. No 4. Biogeography. 2009. Pp. 90-95
Keywords: pollen, fertility, viability, Betula pendula Roth, Betula pubescens Ehrh., Betula ermanii Cham., Betula japonica Sieb.
Birch species introduced in Karelia – Betula ermanii Cham. and Betula japonica Sieb., as well as native species – Betula pendula Roth and Betula pubescens Ehrh. were compared in terms of microgametophyte fertility and vitality, pollen grain and pollen tube size. It is demonstrated that each of the species has developed its own strategy in male gametophyte formation and behaviour under certain ambient conditions. Compared to introduced species, native ones showed higher stability in formation and manifestation of pollen morphophysiological parameters, except for vitality. In introduced species, male gametophyte was more sensitive to changes in the weather and climatic conditions under which pollen formed (B. japonica) and had lower pollen fertility compensated by high vitality (B. ermanii).
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