A new alternaria leaf spot of sapindus emarginatus vahl. from india
Inspite of considerable importance of leaf spot diseases much attention has not so far been paid towards them. Severe infections may be responsible for complete defoliations which may ultimately bring the life of the entire plant at stake. During the last three years the author collected a number of leaf spot flmgi from several new hosts in Maharashtra (India). During the cold season of 1963 the writer noticed a distinct leaf-spot disease oil Sapindus emarginatus VAHL., popularly known as "Soapnut-tree" growing ill the Little Flower School premises, Aurangabad. The disease at tracted special attention due to its severe nature and great economic importance of the tree in India as the soapnuts are used as substitute for soap and in medicine. Critical examination of the fungus in sections as well as in culture showed formation of abundant spores and was later identified as a new species of Alternaria. The disease manifests itself in the form of small, circular spots with ashy black to dark brown spots scattered all over the leaf. These spots could be easily recognised from the spots which were previously reported caused by Phyllosticta.
New species of Alternaria from Marathwada (India)
The paper deals with two new species ofAlternaria, Alternaria nyctanthi onNyctanthes arbortristis Linn. andAlternaria tropaeoli onTropaeolum majus L.
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.