常見例句Triploid clones of Populus tomentosa Carr. 三倍體毛白楊Populus alba L. var. pyramidalis Bunge. 新疆楊Studies on Seedling Traits of New Clones of Populus tomentosa Carr. 毛白楊新無(wú)性系苗期性狀對(duì)比研究。The Geographic Distribution and Origin of Populus L. 楊屬地理分布與起源初探。Fig.1. Shoot primordia on the callus of Populus eupheratica. 對(duì)愈傷組織繼代培養(yǎng)與不定芽再生的關(guān)系進(jìn)行了研究,結(jié)果見圖1。Oxygen delignification of populus kraft pu1p is studied. 進(jìn)行了楊木硫酸鹽漿氧脫木素的研究。 返回 populus