Vol. 70 No: 4

Title:
Effects of Grafting on Transpiration, CO₂ Fixation and Growth of Rose Plants (Rosa × Hybrida cvs Ilseta and Mercedes)

Authors:
H. AGBARIA, BRURIA HEUER and N. ZIESLIN

pp: 651-656

Abstract:
Reduced stomatal conductance and lower rates of transpiration were measured in one year old grafted plants of rose (Rosa × hybrida) cvs Mercedes and Ilseta as compared with non-grafted plants of the two cultivars. In spite of the decreased rate of transpiration, the rate of CO₂ fixation and the content of minerals in the leaves were not altered by the different scion/root combinations. The fresh weight of the flower buds in both cultivars was affected by the type of the understock used. The mean flower stem length and the average number of flowers per stem in one flowering cycle were only little affected by the understock. Selection of various rose cultivars for use as understocks is proposed.

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