PATERNAL INHERITANCE OF PLASTID DNA IN GENUS PHARBITIS  

牵牛属质体DNA的父系遗传(英文)

作　　者：胡赞民[1] 胡适宜[1] 张金忠[2] 

机构地区：[1]北京大学生命科学学院,北京100871 [2]南开大学生命科学学院,天津300071

出　　处：《Acta Botanica Sinica》1996年第4期253-256,共4页Acta Botanica Sinica（植物学报：英文版）

摘　　要：The inheritance of plastid DNA in Pharbitis was studied by the method of restriction fragment length polymorphisms (RFLP).Experimental results showed that plastid DNA from Pharbitis was paternally inherited in reciprocal crosses,P. nil ×P. limbata and P. limbata×P. nil hybrids.But,in the cross of P. limbata×P. nil,the possibility of biparental inheritance of plastid DNA could not be roled out in our preliminary experiment.Thus Pharbitis became the third genus among angiosperms characterized with male plastid transmission.The mechanisms of paternal plastids DNA inheritance in Pharbitis is unclear.The authors proposed that dilution,exclusion and/or degeneration of maternal plastid,including their DNA,after fertilization should be considered.利用限制性片段长度多态性（ＲＦＬＰ）技术研究了牵牛属（Ｐｈａｒｂｉｔｉｓ）植物质体ＤＮＡ 的遗传方式。结果表明，在牵牛（Ｐ． ｎｉｌ）×大花牵牛（Ｐ． ｌｉｍｂａｔａ）和大花牵牛×牵牛中，质体ＤＮＡ 为父系遗传。在大花牵牛×牵牛中，质体ＤＮＡ还有可能为双亲遗传。研究证明牵牛属为被子植物中具有质体父系遗传方式的第三个属。牵牛属质体父系遗传机制尚不清楚，作者认为母系质体及其ＤＮＡ 在受精后的释稀。

关 键 词：PHARBITIS Plastid DNA RFLP PLASTID Paternal  inheritance 

分 类 号：Q949.777.1[生物学—植物学]