Size of stomata and palisade parenchyma on cotyledon adaxial side in someBrassica oleracea L. varieties
Cotyledons of 15 day-old seedlings of fiveBrassica oleracea L. varieties were surveyed to identify salient anatomical features. Both palisade parenchyma cells present in the first subepidermal layer and stomata were found to differ in size.
Development of Stomata in Some Cruciferae
Epidermal structure and ontogeny of stomata are described for ten species or varieties of Cruciferae. The mature stomata are typically anisocytic. Their development is of the mesogenous trilabrate type. The spiral sequence of divisions in the meristemoid may be clockwise or anticlockwise. Very often the neighbouring cells divide and form successive generations of stomata which become arranged in groups. Some theoretical implications of the study are also discussed.
Lupin alkaloids from teratogenic and nonteratogenic lupins. II. Identification of the major alkaloids by tandem gas chromatography-mass spectrometry in plants producing crooked calf disease.
The major alkaloids of lupin plants producing crooked calf disease were identified by tandem gas chromatography-mass spectrometry and infrared analysis. The gas chromatography peak invariably present in teratogenic plants proved to be anagyrine. A minor but irregular contaminant of the peak was α-isolupanine. Other alkaloids present but apparently not associated with crooked calf disease were lupanine and two others that were probably epimethoxylupanine and 5,6-dehydrolupanine.