TY -JOUR
AU -C. Y. Tsai and D. M. Huber
TI -Effects of Potassium on the Movement of Amino Acids and Sugars into Maize Endosperms
PY -1995
DA -0000-00-00
JO -Taiwania
VL -40
IS -3
SP -202
EP -208
UR -https://taiwania.ntu.edu.tw/abstract/886
AB -Efforts were made to study effects of potassium (K) on the movement of amino acids and sugars into maize (Zea mays L.) kernels and the relationship between grain yield and lodging severity. Developing kernels of maize hybrid B73 × Mol7 were incubated in vitro in a reaction mixture containing 50 mM 3H-glutamine, 200 mM 14C-sucrose, and varying amounts of K salts to determine K effects on the transport of these organic nutrients into endosperms. Results indicate that the kinetics of K effect on glutamine and sucrose transports were similar, and the movement of these two organic nutrients into endosperms reached a maximum level when K concentrations increased to 100 mM. The degree of stimulation declined at higher levels of K. There was a positive correlation between grain yield and lodging severity for the four maize hybrids B73 × LH51, FS854, LHE136 × LH82, and A632 × LH39 evaluated. The relationship between dry matter accumulation in kernels and lodging severity of stalk was discussed.
DO -10.6165/tai.1995.40.202