【摘要】 香榧为我国特产名果(系具有假种皮的种子、下均同),其种质资源十分丰富。根据47个单株(23个品系)的45个性状,如种子、果实、枝、叶等的长度、重量,聚成三类:①果实长度及种子长度较短,平均单种重较低,以习惯上的圆榧类为主;②果实长度及种子长度中等,但单种较重,以长果型为主,如细榧;③种子长度较长,单种较前两类更重,种子香气浓,以品质优的核桃榧、丁香榧为另一类。同时,提出细榧优良单株的选种目标,除主要增加果长、种长、单种重外,其他还应重视树形、树姿、冠径、干周、叶基、叶宽、果重变异、种子形态及内种皮等12项指标。更多还原

【Abstract】 Chinese torreya (Torreya grandis Fort, ex Lindl)is a famous special local nut in China,and has an abundent germplasm resource. In this study 23 varieties were grouped into 3 major groups according to 47 trees and 45 characters,namely ,①the length of nuts and seeds and average seed weights rather low, mainly consisting of habitually called garden Chinese torroya ; ② the lengths of nuts and seeds medium seed weight higher, mainly consisting of long-nut types such as Xifei ;③lengths of seeds longer and nut weight even higher with a strong sweet small and excellent quality,including walnut Chinese torreya and Lilac Chinese torreya. It is proposed that the selection targets for Xifei should not only include the lengths of nuts and seeds,seed weight,but also pay attention to the tree shape and posture ,crown extent,girth ,leaf width,seed shape and inner seed coat.更多还原