榛属植物种间杂交花粉直感效应的考测与研究

Inspect and Research in Pollen Straight Sense Effect of the Interspecific Crosses among Corylus Species

本文通过对以大连栽培杂交榛为父本 (P2 )与饶河野生种平榛 (CorylusheterophyllaFish .)杂交当代坚果 (F0 ) ,母本自然坚果 (P1)进行考测与分析发现 :(1)由大连引进的栽培杂交种花粉对杂交当代坚果的形状、色泽、果皮厚度、果皮开裂性、种皮色泽、光滑度等质量性状均有明显的直接影响 ,即因花粉直感效应产生的种子直感现象 ;(2 )对坚果大小、单果重等数量性状也产生了一定花粉直感效应 ,这种数量性状种子直感遗传现象是在多年来植物杂交试验中较为罕见的。

Through the research and analyses to the present age nut of cross(F 0)between Dalian cultivate cross hazel as the male parent(P 2) and Raohe Wild Species C.heterophylla Fish. as the famale parent,and the famale parent nature nut(P 1),the authors found:(1)Cultivated hybrid pollen introduce from Dalian has obvious direct influence to qualitative character at the present age nut of cross from shape of nut, colour and lustre of nut, thickness of nut shell,open split character of nut shell, colour and lustre of kernel and smoothness of kernel.It also says pollen straight sense effect produces seed strgight sense appearance;(2) And it also produces a certain pollen straight sense effect to quantitative character at nut size, and single nnt weight. The seed straightsense heredity appearance in quantitative character is seldom seen in botanical cross experiments lots of years.