The research covered two aspects : one was the interspecific hybridization technology of boston ivy ( parthenocissus tricuspidata ) and virginia creeper ( parthenocissus quinqeufolia ) and the analysis of their hybrid obstacle 论文研究了地锦( parthenocissustricuspidata )和五叶地锦( parthenocissusquinqeufolia )的种间杂交技术，对杂交障碍进行了分析。
However , only did a few pollen germinate in inter - specific hybridization between cerasus fruticosa and c . avian and many pollen tubes are crosswise on stigma and couldn " t penetrated into style . although a few pollen tubes entered , they couldn " t continue to grow due to accumulation of callosity in pollen tubes . in view of above - mentioned results , the irregular growth of pollen was the main reason to cause the incompatibility of distant hybridization between cerasus fruticosa and c . avium 而草原樱桃与欧洲甜樱桃种间杂交授粉后花粉在柱头上虽少量萌发，但花粉管在柱头上横向生长，或盘绕，扭曲不能伸入花柱；个别进入花柱的花粉管先端因沉积胼胝质而中途停止伸长未能进入子房到达胚珠，从而说明这种杂交授粉后花粉管的不正常行为是导致草原樱桃与欧洲甜樱桃远缘杂交不亲和的主要原因。
The results showed that the compatibility indexes were obviously higher when the male sterile lines were used as the female parent than when their respective maintainer counterparts were used as the female parent , indicating the male sterile cytoplasmic effects on interspecific cross incompatibilities in cruciferae 结果表明：三种类型的不育系均有一致的趋向，即用不育系和保持系与同一亲本杂交的亲和指数，不育系作母本的明显高于以保持系作母本的组合，表明十字花科种间杂交亲和性具有雄性不育细胞质遗传效应。
Eight varieties of vitis amurensis rupr . ( v . t . r ) of intraspecific hybridization and interspecific hybridization were introduced into from 2001 ~ 2006 , the results showed some which suited the temperature and soil condition to be the main varieties were selected from those varieties with cold - resistance and high yielding . " zuo youhong " was for dry - red wine , " hasang " was for fruit juice and " shuang you " and " shuang hong " were for adjusting color and acid 摘要2001 ~ 2006年，引种8个山葡萄种内和种间杂交品种，筛选出适宜当地气候和土壤条件、抗寒、产量高、可酿造干红葡萄酒“左优红” 、加工果汁饮料的“哈桑” 、用于调色和调酸的“双优”和“双红”为当地主栽和推广品种。
The male sterile lines and their respective maintainer lines of brassica napus , b . campestris and b . juncea were chosen as the parents in interspecific crosses with b . napus , b . campestris , b . juncea and eruca sativa in order to investigate male sterile cytoplasmic effects on the interspecific cross incompatibility 摘要选择甘蓝型、白菜型、芥菜型三种类型油菜雄性不育系和保持系分别与甘蓝型、白菜型、芥莱型油菜和芸芥进行种间杂交，研究十字花科种间杂交亲和性雄性不育细胞质遗传效应。
