罕见的苦苣苔科报春苣苔属的自然杂交后代盛放GCCC温室

      众所周知，杂交是育成植物新品种最常规的手段，而自然界中，也有一些自然杂交起源的苦苣苔科植物，就如同我们前面所谈到的碎米荠叶报春苣苔，就极有可能是自然杂交起源的。但是，在大自然中，苦苣苔科植物能够形成稳定的杂种群并最终演化为“种”的情况还是极为少见的。如一“失败”的例子是异蕊马铃苣苔Oreocharis × heterandra D. Fang & D.H. Qin，其种群的形成完全有赖于两个亲本（紫花马铃苣苔O. argyreia Chun ex K. Y. Pan和大齿马铃苣苔O. magnidens Chun ex K. Y. Pan）庞大的数量基数，同时其本身不能形成正常的花粉和种子，并非是一个好种；另一个成功的例子是长药石蝴蝶Petrocosmea × longianthera Z.J. Qiu & Y.Z. Wang，其亲本是滇黔石蝴蝶P. martinii (Lévl.) Lévl.和砚山石蝴蝶P. yanshanensis Z.J. Qiu & Y.Z. Wang，在证明了长药石蝴蝶是杂种起源之外，科研人员也发现，这个“杂种”已经形成了稳定的自然繁衍的居群，已经是一个“好种”啦。
      It is well-known that hybridization is the regular method to get new plant varieties. Sometimes, we can find some natural crossing original species of Gesneriaceae plants, for example Primulina cardaminifolia Yan Liu & W.B. Xu, we mentioned before, which is the most probably natural hybrid origin. However, even if some species of same or different genera of Gesneriaceae grow in the same locality and get some interspecific hybrids offspring, it is not easy and rare to form a stable hybrid population so that it can evolve to be a good species. For instance, a failed “species” example is Oreocharis × heterandra D. Fang & D.H. Qin. Its population absolutely depends on the much larger population base of its parents, O. argyreia Chun ex K. Y. Pan and O. magnidens Chun ex K. Y. Pan. Oreocharis × heterandra can not form normal pollens and seeds so that it can’t get the normal offspring. It is not a “good” species. Another good example is Petrocosmea × longianthera Z.J. Qiu & Y.Z. Wang. Its parents are P. martinii (Lévl.) Lévl. and P. yanshanensis Z.J. Qiu & Y.Z. Wang. At present Petrocosmea × longianthera have formed a stable population. It is a “good” species.
                
                
      那么，我国苦苣苔科中最“人”丁繁盛的报春苣苔属有没有自然杂交种呢？显然也是有的，不过由于杂种后代往往很难形成可育的花粉，因此绝大部分情况下这些杂种后代常常在多年以后，就“香消玉殒”啦。不过，要是一旦有幸在野外发现了自然杂交形成的个体，那可算是有好运气啦，换句话说，也就是咱们可以帮助它们把这个美丽的生命延续下去。
      So, can we find some natural interspecific hybrids offspring of Primulina in the field? After all Primulina is the biggest genus in Chinese Gesneriaceae. Obviously, you can we can everyone can. However, because those interspecific hybrids offspring can’t form normal pollens, they will disappear after some years. If you find the natural hybrids, please help them to propagate.
                
                
      怎么帮？当然是叶插啦！还可以为它们取得一个合法的身份——在世界苦苣苔协会（The Gesneriad Society，GS）给它们注册登录一个名字，至于名字是什么，就交给好运气的您啦！
      How to do? Leaf Cutting! Of course, you should help them to get a “legitimate ID”. To register a name at The Gesneriad Society. Good name, good luck!
                
                
      本期的图示是GCCC温放博士和洪欣博士在2014年秋季在大新县发现的一个报春苣苔属自然杂交个体，当时采集了数枚叶片回GCCC进行繁殖，经过数年慢慢扩繁，已经颇有一定规模。
      Those wonderful photos belong to a natural hybrid. It was found by Dr Wen Fang and Dr Hong Xin in Daxin County (2014). They collected some leaves from the only one individual. Now many plants are being cultivated in GCCC Green House.
                
                
      Ok，福利来啦！这个种的亲本之一是匍茎报春苣苔Primulina diffusa Xin Hong, Fang Wen & S.B. Zhou，如果哪位能鉴定出其另一个亲本，并及时与GCCC联系，等秋凉，会送上叶片喔（不包邮，仅限10人喔）！又及：本自然杂种即将在GS进行登录。
      Ok, as you known. One of parents of this Primulina natural hybrid is P. diffusa Xin Hong, Fang Wen & S.B. Zhou. If you can identify another parental species, we will send you a leaf (total 10 leaves for ten people). PS: This natural hybrid will register in GS.