[1]Horticulture College;
Gansu Agricultural University;
Lanzhou 730070;
P.R.China;
[2]Institute of Fruit and Floriculture Research;
Gansu Academy of Agricultural Sciences;
Lanzhou 730070;
P.R.China;
[1]Horticulture College;
Gansu Agricultural University;
Lanzhou 730070;
P.R.China;
[2]Institute of Fruit and Floriculture Research;
Gansu Academy of Agricultural Sciences;
Lanzhou 730070;
P.R.China;
[2]Institute of Fruit and Floriculture Research;
Gansu Academy of Agricultural Sciences;
Lanzhou 730070;
P.R.China;
[2]Institute of Fruit and Floriculture Research;
Gansu Academy of Agricultural Sciences;
Lanzhou 730070;
P.R.China;
short-term heat stress; leaf senescence; chlorophyll a fluorescence; arid desert region; delayed cultivation;