Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Under drought conditions, exogenous melatonin promotes the gas exchange of sorghum leaves: (A) Ci; (B) Pn; (C) Tr; (D) Gs. CK: control treatment; D: 20% PEG; D + M: 20% PEG + 100 μmol/L of MT; D + P: 20% PEG + 100 μmol/L of CPA; columns represent mean ± SD, and, according to the LSD test, n = 3, significant differences are indicated in lower case letters (p ≤ 0.05).
