Spontaneous hybridization of the putative ancestors of the allotetraploid Poa annua
Spontaneous hybridization of the putative ancestors of the allotetraploid Poa annua
复制标题
DOI：
10.1046/j.1469-8137.1997.00772.x
复制
发表时间：
1997-07-01
期刊：
影响因子：
9.4
通讯作者：
Gasquez, J
中科院分区：
文献类型：
--
作者：
Darmency, H;Gasquez, J
两个二倍体Poa infirma Kunth和P. spina Schrader之间的自发杂种以0.2％的比率获得。没有观察到相互的母体效应。几乎所有杂交品种都存活下来，生长正常，但不育。杂种是二倍体，在形态上类似于四倍体 P. annua L.（一年生草甸草）。在它们的同工酶中，它们表现出亲本模式的加和性，并且与青松种群中发现的非常相似。杂种获得的容易性以及它们的形态和同工酶模式与青蒿的相似性表明这两个二倍体物种与异源四倍体物种密切相关，并且可能是其亲本物种。
Spontaneous hybrids between the two diploids Poa infirma Kunth and P. supina Schrader were obtained at the rate of 0.2%. No reciprocal maternal effect was observed. Almost all hybrids survived, grew normally but were sterile. Hybrids were diploid, and resembled in morphology the tetraploid P. annua L. (annual meadow grass). In their isozymes, they showed additivity of the parental patterns, and were very similar to those found in P. annua populations. The ease with which hybrids were obtained and the similarity of their morphological and isozyme pattern to P. annua suggest that the two diploid species are closely related to the allotetraploid species, and are perhaps its parent species.