02302naa a2200289 a 450000100080000000500110000800800410001910000230006024501580008326000090024152015280025065000090177865000160178765000160180365000090181965000160182865000110184465300110185565300110186665300110187765300180188865300140190665300110192070000170193170000160194877300480196410771981996-05-23       1975    bl ---       0--  u    #d1 aABDELHAFEEZ, A. T.  aEffects of air temperature, soil temperature and soil moisture on growth and development of tomato itself and grafted on its own and egg-plant rootstock.  c1975  aThe problem was studied whether tomatoes, grown in a hot and arid climates, benefit  from grafting on egg-plant, which is highly efficient in water uptake. Growth and development of tomato(T), tomato grafted on its own rootstock(T/T) and tomato grafted on egg-plant rootstocks (T/E) were compared at air temperatures of 28oC during the day and 18oC during the night (28/18) and at 28oC constantly (28/28), at soil temperature of 14, 21 and 28oC with the following soil moisture regimes: wet(W1), medium (W2) and dry (W3). At 28/12 and 28/28 water consumption was about equal, but the transpiration ratio at 28/28 was twice as highas that at 28/18. The latter conditions gave a much stronger plant with more fruits. At a soil temperature of 14oC water use was strongly reduced. The transpiration ratio increased with the soil temperature. Differences in plant type were small. At the highest soil temperature of 28oC fruit growth  was strongly reduced. At lower soil moisture levels less water was used and the transpiration was lower. Plant type was correlated herewith. Vegetative growth of T/T was weaker than of T, but generative growth was stimulated. The strong E rootstock simulatedvegetative growth at high air and soil temperature, but fruit growth was very poor under these conditions; at a low soil temperature of 14oCvegetative growth was also reduced.  The hope that the E rootstock would be beneficial for fruit growth at high temperature was not fulfilled. An additional experiment in a growth-room at 23oC...  asoil  atemperature  aCrescimento  aSolo  aTemperatura  aTomate  aEfeito  aEffect  aGrowth  aPorta-enxerto  aRootstock  aTomato1 aHARSSEMA, H.1 aVERKERK, K.  tScientia Horticulturaegv.3, p.65-73, 1975.