Effects of Extreme High Temperature and Drought on Growth and Fruit Characters of 'Changlin' Series of Camellia oleifera in Southeast of Chongqing
The effects of composite factors of extreme high temperature and drought on the growth and fruit characters of Camellia oleifera'Changlin 3',C.oleifera'Changlin 4',C.oleifera'Changlin 40'and C.oleifera'Changlin 53'in southeastern Chongqing were investigated in 2022,which provided a theoretical basis for the selection and promotion of'Changlin'series of C.oleifera.The results showed that high temperature and drought influenced the growth of C.oleifera,inhibited the longitudinal and transverse diameter growth of the fruit of C.oleifera,reduced the fresh seed yield,and decreased the weight and yield per plant of the fruit.Under the influence of high temperature and drought,C.oleifera'Changlin 53'had the best drought resistance and the best performance of fruit economic traits(single fruit weight,longitudinal diameter,transverse diameter,seed weight,fresh seed yield and fresh fruit yield per plant);C.oleifera'Changlin 3'had the strongest drought resistance and the largest number of fruit tea seeds.In conclusion,C.oleifera'Changlin 53'has good growth and character performance and outstanding ability to resist high temperature and drought stress under the condition of large climate variation,which can be cultivated and promoted as an excellent variety.
extreme high temperature and drought'Changlin'seriesCamellia oleiferagrowthfruit characters
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