Study On The Species Introduction And Breeding Of New Cultivars In Tamarix Chinensis

Dongying is situated on the coast of Bohai sea and the estuary of Huanghe river. Defect of fresh water and excessive salt in the soil lead to the poor natural vegetation. Species introduction and breeding of new cultivars of Tamarix chinensis do not carried out till now, although a lot of research work has been done on the selection of salt tolerant plants.In this study, 13 species of Tamarix chinensis and two local mutants have been selected as the candidates for the identification of better cultivars. T.chinensis Lour. was used as the control. Seven species have higher survival rate (>80%) of cottage, indicating that they have better performance on vegetative propagation and adaptability to the local environment and soil condition. Dongsheng 1, Dongsheng 2 and Zhongguoshengliu have high survival rate by analysis of the first, third and fourth year's survival rates of the 16 species planting at three regions.The survival rates of Dongsheng 1 and Dongsheng 2 at the fourth year of forestation are above 88.3%. Zhongguoshengliu is above 83.3%. The height of Dongsheng 1, Dongsheng 2 and Zhongguoshengliu grows rapidly than the others at the fourth year of forestation. Dongsheng 2 is 36% higher than Zhongguoshengliu, while Dongsheng 1 is 17.6% higher than Zhongguoshengliu. Dongsheng 1, Dongsheng 2 and Duohuashengliu show high growth rates on the thickness. The height and stem base have high heritability, suggesting that the difference on the growth of the species was mainly controlled by the inheritance. Dongsheng 1, Dongsheng 2 and Duohuashengliu gain higher scores by multiple analysis of the survival rate, height and stem base. Dongsheng 1 and Dongsheng 2 can act as improved strains for the spreading. Duohuashengliu and Ganmengshengliu are two introduced species show better performance in Dongying district, which can be used as the successful introduced species for spreading.