Soares, L.A.A.; http://lattes.cnpq.br/4579069806627883; ANJOS, Lauriane Almeida dos.
Abstract:
The water stress a#ects the growth, the development and the production of fruitful
species, among which citrus. The use of combinations scion/rootstock tolerant can
guarantee the agribusiness of citrus under such conditions. With the intention of
assisting that need, this work had as objective evaluates the growth of four
combinations citrus scion/rootstock under water stress vegetation home, constituted
of improved materiais obtained by PMG of citrus of CNPMF, in a randomized blocks
experimental, with three repetitions, consisting from four leveis of water to the plants,
being 50, 75, 100 (testifies) and 125% of Real Evapotranspiration (ETr) and four
combinations citrus scion/rootstock. Growth variables, physiologic measures and
biomass fomlation were evaluated, being the data submitted to the variance analysis
by the test 'F' with studies of regression polynomial. The reduction in the applied
sheet committed the growth in number of leaves, rootstocks diameter, grafting and
cup; The use of the irrigation affected the fitomassa total drought of the plants, and
the largest value (266,02 g for plant) it was obtained with 115% of replacement of
Evapotranspiração Reall The application of smaller sheets than 75% of ETr commit,
in more than 10%, the gaseous changes and the photosynthesis of the combinations
scion/rootstock of studied citrus; The combination between he lemon tree 'l Cravo
Santa Cruz' and the grapefruit 'Star Ruby' has growth potential in the semiarid, for
there being better physiologic behavior and larger water use efficiency; The water
levei of 100% of ETr, better growth of shoots, which can be used as referente for
studies of appropriate slides in citrus irrigation in the semiarid.
Keywords: genotypes.
