林木树种 meaning in Chinese

forest tree species

Many forest tree species have multiple archegonia which, after fertilization produce a number of proembryos .
许多林木树种都有颈卵器，受精以后便产生许多原胚。
It replenished the blankness of birch genetic transformation , and provided a new path for genetic improvement in this species
为白桦的遗传改良与高新技术育种开辟了一条新途径，也为其他林木树种的遗传改良提供了理论依据。
According to reference , this research is the first time to transfer practically productive aim - gene to tetraploid black locust , and it is also the first time to transfer badh gene to forest - tree . this research provide a useful way in improving resistance to soline - alkali and drought of forest tree
据资料检索，该研究属首次将具有生产意义的目的基因导入四倍体刺槐，也是首次将甜菜碱醛脱氢酶基因导入林木树种，在培育耐盐抗旱型林木品种方面进行了有益的探索。