اثر تیمارهای پرایمینگ بر مقاومت به شوری بذور Schreb Festuca arundinaceaو L. Festuca ovina در مرحله جوانه‌زنی و رشد اولیه

اثر NaCl پرایمینگ بر مؤلفه‌های جوانه‌زنی و رشد اولیه بذرهای گونه L. Festuca ovina در شرایط تنش شوری

شوری یکی از مهمترین استرس­های محیطی است که در گیاهان مختلف اثرهای نامطلوبی روی جوانه­زنی بذرها و رشد گیاهچه­ها می­گذارد. NaCl پرایمینگ از تکنیک­های بهبود عملکرد بذر می­باشد که در شرایط تنش شوری می­تواند باعث افزایش درصد جوانه­زنی­، سبز شدن و رشد گیاهچه­ها شده و میانگین زمان جوانه­زنی بذرها را کاهش دهد. در این تحقیق به منظور بررسی اثر NaCl پرایمینگ بر جوانه­زنی و رشد اولیه بذرهای Festuca ovina ت...

A DNA marker for the duplicated cytosolic PGI genes in sheep's fescue (Festuca ovina L.).

Active duplicate PgiC genes in sheep's fescue, Festuca ovina, are associated with a PCR marker of specific length (about 370 bp, of which 231 are in an intron). Using this marker, the frequency of plants with duplicate genes is estimated to be about 10% in a population from southern Sweden. The close molecular similarity between the electrophoretically different duplicated genes is in accordanc...

بررسی اثر دما بر رشد رویشی و زایشی پنج جمعیت در گونه مرتعی فستوکا (Festuca ovina )

Genetic Structure and Eco-Geographical Differentiation of Wild Sheep Fescue (Festuca ovina L.) in Xinjiang, Northwest China.

Glaciation and mountain orogeny have generated new ecologic opportunities for plants, favoring an increase in the speciation rate. Moreover, they also act as corridors or barriers for plant lineages and populations. High genetic diversity ensures that species are able to survive and adapt. Gene flow is one of the most important determinants of the genetic diversity and structure of out-crossed ...

Contrasting patterns of nucleotide polymorphism suggest different selective regimes within different parts of the PgiC1 gene in Festuca ovina L.

BACKGROUND Phosphoglucose isomerase (PGI, EC 5.3.1.9) is an essential metabolic enzyme in all eukaryotes. An earlier study of the PgiC1 gene, which encodes cytosolic PGI in the grass Festuca ovina L., revealed a marked difference in the levels of nucleotide polymorphism between the 5' and 3' portions of the gene. METHODS In the present study, we characterized the sequence polymorphism in F. o...

Structure of the Natural Transgene PgiC2 in the Common Grass Festuca ovina

BACKGROUND A horizontal gene transfer has brought an active nuclear gene, PgiC2, from a polyploid Poa species (P. palustris or a close relative) into the common grass sheep's fescue (Festuca ovina). The donor and the receptor species are strictly reproductively separated, and PgiC2 occurs in a polymorphic state within F. ovina. The active gene copy is normally closely linked to a very similar p...