Stimulation of lateral branch development on Ilex paraguariensis (Aquifoliaceae) seedlings

P. SANSBERRO; L. MROGINSKI; R. BOTTINI

AUSTRALIAN JOURNAL OF EXPERIMENTAL AGRICULTURE

CSIRO PUBLISHING

Año: 2006 vol. 46 p. 707 - 710

0816-1089

This work investigates the effects of abscisic acid (ABA) on physiologic parameters related to yield in wheat (Triticum aestivum) grown under field conditions with water restriction ranging between 45.7% and 49.5% of field capacity during anthesis and postanthesis. ABA (300 mg Lÿ1) was sprayed onto the plants at the beginning of shoot lengthening which significantly promoted leaf area and higher concentrations of chlorophylls and carotenoids in flag leaf at anthesis. ABA also increased soluble car- bohydrates in shoots at anthesis, which were then re- exported to the grains at maturity. This correlated with a yield increase that was achieved by a higher number and weight of grains per spike, but protein content was not significantly affected.