Spike Disease of Plants

Abstract

Besides sandal, 37 other plant species have been observed to be spiked in the forest areas in S. India. It appears that all of them could be grouped together under the general and generic name of SPIKE, both on the basis of their morphological characteristics and physiological effects on such plants. A new group is thus included like the MOSAICS, YELLOWS and the like. Although it had not been possible to investigate all of them, the physiological effects on sandal, periwinkle, Z. orenoplia and Dodonea viscosa are reported here. The course of reaction in all of them seems to be identical.