„ Heterosis in the Freezing tolerance of Arabidopsis thaliana (L.) Heynh.”
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چکیده
" Heterosis in the Freezing tolerance of Arabidopsis thaliana (L.) Heynh. " D i s s e r t a t i o n zur Erlangung des akademischen Grades doctor rerum horticulturarum
منابع مشابه
Isolation of mutations affecting the development of freezing tolerance in Arabidopsis thaliana (L.) Heynh.
We screened for mutations deleterious to the freezing tolerance of Arabidopsis thaliana (L.) Heynh. ecotype Columbia. Tolerance was assayed by the vigor and regrowth of intact plants after cold acclimation and freezing. From a chemically mutagenized population, we obtained 13 lines of mutants with highly penetrant phenotypes. In 5 of these, freezing sensitivity was attributable to chilling inju...
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Heterosis is defined as the increased vigour of hybrids in comparison to their parents. We investigated 24 F(1) hybrid lines of Arabidopsis thaliana generated by reciprocally crossing either C24 or Col with six other parental accessions (Can, Co, Cvi, Ler, Rsch, Te) that differ widely in their freezing tolerance. The crosses differed in the degree of heterosis for freezing tolerance, both in th...
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Heterosis, or hybrid vigor, is one of the most important tools in plant breeding and has previously been demonstrated for plant freezing tolerance. Freezing tolerance is an important trait because it can limit the geographical distribution of plants and their agricultural yield. Plants from temperate climates increase in freezing tolerance during exposure to low, non-freezing temperatures in a ...
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Arabidopsis thaliana (L.) Heynh. has been described as a freezing-tolerant species based on freezing-resistance assays. Nonetheless, this type of experiment does not discriminate between freezing-tolerance and freezing-avoidance mechanisms. The purpose of this paper was to determine which of these two freezing-resistance mechanisms is responsible for freezing resistance in A. thaliana. This was...
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Metal hyperaccumulation is a trait present in over 450 higher plant species. Hyperaccumulators are also tolerant to metals, but hyperaccumulation and tolerance are genetically independent traits. The ecological and biological significance of hyperaccumulation is not clear yet. To provide new insights, this review examines recent literature, in particular focusing on the Cd and Zn hyperaccumulat...
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تاریخ انتشار 2010