orthotropism meaning in English

n.
【植物；植物学】直生性。

Endemic variety cangzhou alfalfa was oppressed at hay yield , regeneration and orthotropism
地方品种沧州苜蓿在草产量、再生性、直立性等方面均处于劣势。
In addition , anstar alfalfa and kitawakaba et al . were lodging resistant and had good orthotropism , which were suitable for mechanized harvesting
另外，安斯塔、北若叶等苜蓿品种直立性较好，适宜机械收割。