Cotyledon Numbers of Two Peganum Species (Peganaceae) in Mongolia
Most seedlings of Peganum harmala and P. nigellastrum have two cotyledons, but up to 10% of all seedlings of P. harmala have to three cotyledons, and up to 1.7% has four cotyledons. Up to 5.4% on P. nigellastrum have only three cotyledons. Frequency of three cotyledonous...
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| Format: | Article |
| Language: | English |
| Published: |
National University of Mongolia
2011-12-01
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| Series: | Mongolian Journal of Biological Sciences |
| Subjects: | |
| Online Access: | http://mjbs.num.edu.mn/uploads/files/MJBS%20Volume%209%20Number%201-2%20December%202011/pdf/mjbs009-01-02-01.pdf |
| Summary: | Most
seedlings of
Peganum harmala
and
P. nigellastrum
have two cotyledons, but up to 10% of all
seedlings of
P. harmala
have to three cotyledons, and up to 1.7% has four cotyledons. Up to 5.4% on
P. nigellastrum
have only three cotyledons. Frequency of three cotyledonous seedlings among these
two species was signifi cantly different. The present results report three cotyledonous seedlings, as well
as four cotyledonous seedlings in the family Peganaceae, in addition to two cotyledonous seedlings.
On both species, the frequency of three cotyledonous seedlings was increased with increased annual
precipitation and decreased air temperature, and in localities, which isolated from main distribution
range. The frequency of three cotyledonous seedlings of
P. harmala
increased with increasing soil
alkalization, but that of
P. nigellastrum
increased with decreasing alkalization. |
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| ISSN: | 1684-3908 2225-4994 |