α-Tomatine Content of tomato Varieties Grown in the Tha-Chein Area of Thailand

Abstract

A study was undertaken of the - tomatine content of the leaves and fruit of four tomato varieties grown in the Tha-Chein area of Thailand with a view to establishing possible relationships to yield which might reflect pesticidal properties of the – tomatine. The tomato varieties used in the study were L22, Sida M.K., M. Din-Dang and Kasetakorn.
No clear relationship between the -tomatine content of either the leaves or fruit and fruit yield per plant was able to be established. The -tomatine content of the leaves of L22, sida M.K., M. Din-Dang and Kasetakorn was 18.23, 16.33 and 30.07 mg/gm dry weight, respectively; in the fruit the respective contents were 3.22, 2.84, 2.71 and 3.51 mg/gm dry weight. Relative mean plant yields for the four varieties were 1158, 1253, 998 and 1173 gm and were not significantly different between varieties.