Effects of winter temperatures on two birch (Betula) species
نویسندگان
چکیده
منابع مشابه
optimization of surface sterilization treatments in two birch (betula sp.) species
birch (betula sp.) is considered as extinction species and its natural regeneration in iranian forests is very slow. difficulties in regeneration as well as natural seed germination of birch tree besides high levels of seed contaminations have justified the application in vitro culture with respect to its conservation and genetic improvement. hence, the in vitro culture initiation using se...
متن کاملGenetic transformation of silver birch (Betula pendula) by particle bombardment.
We used in vitro callus and shoot cultures as target material for genetic transformation of silver birch (Betula pendula Roth) by particle bombardment. Cultivation of in vitro shoot cultures before particle bombardment and a long selection period, combined with a high concentration of selective agent after bombardment, led to the production of transformed plantlets that were stable, and no esca...
متن کاملTranscriptomic Analysis of Phenotypic Changes in Birch (Betula platyphylla) Autotetraploids
Plant breeders have focused much attention on polyploid trees because of their importance to forestry. To evaluate the impact of intraspecies genome duplication on the transcriptome, a series of Betula platyphylla autotetraploids and diploids were generated from four full-sib families. The phenotypes and transcriptomes of these autotetraploid individuals were compared with those of diploid tree...
متن کاملEffects of duration of a simulated winter thaw on dieback and xylem conductivity of Betula papyrifera.
Stems or roots + stems of potted, 2-year-old paper birch (Betula papyrifera L.) were subjected to simulated winter thaws of various durations in climate-controlled chambers. The simulated thaws induced dieback of shoots of the treated plants. Although the stem thaw treatment did not significantly increase dieback, there were significant (P < 0.05) correlations between growing degree days above ...
متن کاملHormesis and Paradoxical Effects of Drooping Birch (Betula pendula Roth) Parameters Under Motor Traffic Pollution
Various plant indexes are used or recommended for bioindication. However, the nonmonotonic dose-response dependences (hormesis and paradoxical effects) of these indexes are insufficiently explored upon exposure to pollution. We studied the dependences of these Betula pendula indexes on the intensity of motor traffic pollution. Regression analysis did not reveal any dependence of chlorophyll and...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Tree Physiology
سال: 2008
ISSN: 0829-318X,1758-4469
DOI: 10.1093/treephys/28.4.659