平欧榛x平榛的回交榛主要性状遗传规律分析

An Analysis of the Main Characters Genetic Law on Backcross Hazel of Corylus heterophylla x Corylus avellana

在以平欧榛为母本,龙江平榛为父本的回交中,F1的平均坚果重较母本小1.73%,较父本大88%;平均出仁率较母本小3.04%,较父本大19.5%;果壳厚度较接近于父本。F1植株径干生长量、冠幅开张度、侧枝发枝力近似母本,比父本基径生长量约大1倍,侧枝发枝数也大于父本。母本引种6年后植株主干的死亡率和雄花越冬受害率仍分别为6.4%、31.6%,F1植株基本消除这一危害。F1的单株结实量也比引进的平欧榛有较大提高,这些均说明母本的树体发育特性遗传力较强,父本的高耐寒性遗传力较强。

The backcrosstest was studied by take Corylus avellana as female parent, Longjiang Corylus heterophylla as male parent. The average nuts heavy of F~ was 1.73% ,smaller than female parent, 88% than male parent. Small female parent in the average kernel is 3.04%, 19.5% than male parent. Nut shell thickness was close to the male parent. FI plants diameter stem growth, the crown on strength, lateral branch principal stress approximate female parent, 1 times larger than male parent base diameter growth was about, collateral branch number is greater than the male parent, With male and female parent introduction after 6 years the backbone of the plant mortality rate of overwintering suffer still respectively 6.4%, 31.6%, F1 plants basically eliminated the harm. FI seed showed than imported flat the hazel has increased greatly, these are tree development features of the show maternal heritability is stronger, strong cold resistance genetic force higher than that of male parent.