Effects of Foreign Plant Growth Regulating Substances on Chlorophyll Fluorescence of Prunus armeniaca
The Chlorophyll fluorescence parameters of Prunus armeniaca in Xingan League were studied under differ-ent application concentration and different stages by various plant growth regulating substances(ABA,6-BA,IAA,PABA).The variation of cold hardiness was evaluated indirectly.The results showed that the effect of(6-Benzyl-aminopurine)6-BA on increasing the cold hardiness of Prunus armeniaca leaves was most obvious in the four rea-gents.The best application concentration was 6-BA 100 mg/L.The best treatment stage was in earlier-September.
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