Abstract
Previous work on the factors affecting heteroblastic development in Ipomoea caerillea (Njoku, 1956a and b) has shown that the change from juvenile entire leaves to deeply trilobed adult leaves is accelerated by high light intensity and retarded by defoliation. It is known that leaf form in other plants is affected by mineral nutrition (Ashby, I948; Allsopp, I953) and by temperature (Pound, I949; Fisher, 1954). The experiments reported in this paper were designed to test whether mineral nutrition and temperature also affect leaf form in Ipomoea caerulea. In the course of previous work there was already an indication that mineral nutrition might be important (Njoku, 1956a).
Published Version
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