Effects of Temperature on Content of Four Materials in Leaves during Gender Transition of Hermaphrodite Papaya（Carica papaya L.）

Key words: 
• papaya leaves /
• gender transition of hermaphrodite /
• protein /
• starch /
• dissociated amino acid

Abstract: In the paper,the content changes of protein,starch,moisture and dissociated amino acid in the hermaphrodite plant under different high temperature were analyzed. The results showed that the protein content in leaves decreased with temperature increasing,which decreased 28% at 38 ℃ than that at 33 ℃,and decreased 1.3% at 41 ℃ than that at 38 ℃; the starch content in leaves decreased with temperature increasing too,which decreased 2.9% at 35 ℃ than that at 33 ℃,and decreased 20% at 38 ℃ than that at 35 ℃; with temperature increasing,the moisture content in leaves decreased firstly and then increased,which decreased 1.9% at 35 ℃ than that at 33 ℃,but increased 1.4% at 38 ℃ than that at 35 ℃; the content of dissociated amino acid in leaves between 33 ℃ and 34 ℃,at which the gender of hermaphrodite were stable,those between 37 ℃ and 38 ℃,at which the gender of hermaphrodite were changed,but some of which ,such as aspartic acid,glycin,arginine and proline increased. These data indicated that the gender transition of hermaphrodite papaya might be associated with the content changes of protein,starch,moisture and dissociated amino acid in the hermaphrodite plant under different high temperatures.