Effects of Main Environment Factors on Flowering in Camellia oleifera
In order to understand the key environment factors on lfowering of Camellia oleifera, the physical and biochemical indexes in lfowering process of C. oleifera‘Changlin 4’ were studied. The results showed that under different environments, the contents of soluble protein, soluble sugar and growth regulators, including auxin, gibberellin, cytokinin and abscisic acid, in old leaves, new leaves and stems had signiifcant differences in lfower bud differentiation period (May 19), but had no direct relations with lfowering. The buds were full and growth was fast, and lfowering time was early too under N treatment. The light and growth regulators, except of GA, cannot promote C. oleifera blossoming. The lfowering rate was the highest under nutrient treatments, and then was under water and heat treatments, but under hot and K treatments, the end stage of lfowering signiifcantly delayed. Therefore, the suitable conditions, such as heat, nutrient and water, are in favour of blossom in C. oleifera, but auxin and cytokinin inhibit its blossom.
Camellia oleiferaEnvironmental factorPhysiology and biochemistryFloweringFlower phase