EUTRIPLOID FACULTATIVE AGAMOSPERMY IN TARAXACUM

Variation in Taraxacum.

Variations in Cytolgoy and Gross Morphology of Taraxacum I. Cytology of Taraxacum Laevigatum

Facultative and non-facultative sex ratio adjustments in a

15 If parental allocation to each offspring sex has the same cost/benefit ratio, Fisher's 16 hypothesis predicts a sex ratio biased towards the cheaper sex. However, in 17 dimorphic birds there is little evidence for this, especially at hatching. We 18 investigated the pre-fledgling (i) sex ratio, (ii) body condition and (iii) sex19 differential mortality in a population of the glossy ibis (Ple...

Genetic proof of chromatin diminution under mitotic agamospermy

The previously published data are examined on the base of the hypothesis about existence of differential polyteny of chromosomes and excess chromatin diminution during the first stages of embryogenesis. It has been concluded that available data provide the genetic proof that chromatin diminution is one of the mechanisms underlying the origin of polymorphism in sugar beet agamospermous progenies...

Three Novel Triterpenoids from Taraxacum officinale Roots.

Three novel lupane-, bauerane-, and euphane-type triterpenoids (1-3), in addition to seven known triterpenoids (4-10)-18β,19β-epoxy-21β-hydroxylupan-3β-yl acetate (4), 21-oxolup-18-en-3β-yl acetate (5), betulin (6), officinatrione (7), 11α-methoxyolean-12-en-3-one (8), eupha-7,24-dien-3-one (9), and 24-oxoeupha-7,24-dien-3β-yl acetate (10)-were isolated from the roots of Taraxacum officinale. T...