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首页> 外文期刊>Genetic Resources and Crop Evolution >Reciprocal compatibility within the genus Pisum L. as studied in F-1 hybrids. 3. Crosses involving P. abyssinicum A. Br.
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Reciprocal compatibility within the genus Pisum L. as studied in F-1 hybrids. 3. Crosses involving P. abyssinicum A. Br.

机译：在Pisum L中的互惠相容性L.在F-1杂交种中研究。 3.涉及P. Abyssinicum A. BR的十字架。

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A greenhouse experiment of crossing eight accessions of peas (Pisum L.), representing their different taxa and divergent lineages, with each other and to self has been carried out, aimed at evaluating reproductive barriers inside this genus which may be of importance for pre-breeding. The results of crosses involving the cultivated pea, P. sativum L. subsp. sativum, and Pisum fulvum Sibth. et Smith has been published earlier, while this paper presents those of crosses involving Pisum abyssinicum A. Br. (accession VIR2759 from Ethiopia). It was crossed, in both directions, with seven accessions representing P. fulvum (1 accession), P. sativum L. subsp. elatius (Bieb.) Schmalh. s.l. (5 accessions) and the cultivated pea, P. sativum subsp. sativum (1 accession). The average number of hybrid seeds per cross (crossing efficiency) was evaluated and the reciprocal F-1 hybrids were analysed for pollen and seed fertility and some quantitative traits. Two crossing combinations produced no hybrid seeds. Male and female fertilities of F-1 hybrids with P. abyssinicum were on average low but better than of the hybrids with P. fulvum analysed earlier. Both fertilities were on average better in hybrids with representatives of the evolutionary lineage AC of P. sativum than with those of the lineage B. In most cases differences in the fertilities were registered between reciprocal hybrid classes supposedly due to the conflict of the nucleus and plastids. Two hybrid classes produced no seeds. In one of them a hybrid plant was found which inherited paternal plastid (but maternal mitochondria); its male fertility was elevated to the level of the reciprocals but did not restore seed fertility. Surprisingly, the F-1 hybrids of P. abyssinicum resulting from pollination by accession 721, a tall climber from Mt. Carmel, showed fully fertile pollen, indicating their relatedness. These data show that crossability of the Abyssinian pea with all other peas is very poor (with one exception in one direction only), supporting its specific status in frame of the biological species concept.
机译：穿过豌豆（PISUM L.）的八个牧虫的温室试验，代表他们不同的分类群和不同的分类谱系，彼此相互开展，旨在评估该属内的生殖障碍，这可能是预期的配种。涉及栽培豌豆的杂交的结果，P. Sativum L. subsp。 Sativum和Pisum Fulvum sibth。 Et Smith已经发表于早些时候，而本文呈现出涉及Pisum Abyssinicum A的十字架。 （从埃塞俄比亚的加入vir2759）。它在两个方向上横渡了七种附加，代表了P.Furovum（1加入），第三次Sativum L. subsp。 Elatius（Bieb。）Schmalh。 S.L. （5种载体）和栽培豌豆，P. Sativum subsp。 Sativum（1加入）。评价每十字（交叉效率）的平均杂化种子数，分析对往复F-1杂种的花粉和种子生育，一些定量性状。两种交叉组合没有产生杂种种子。 F-1杂交种的男性和女性培养性与P. Abyssinicum的平均低但比早先分析的P. Fulvum的杂种更好。在与谱系中的血脂的进化谱系AC的代表相比，这两种威胁都是更好的。在大多数情况下，由于细胞核和塑性的冲突，在往复式杂交类之间的往复杂种课程中，威胁之间的差异在大多数情况下都是差异。两个混合类别没有产生种子。在其中一个中，发现了一种杂交植物，其遗传患者血浆（但母体线粒体）;它的男性生育率升高到互核的水平，但没有恢复种子生育率。令人惊讶的是，通过加入721授粉，来自Mt.Scarmel的高大登山者的P. Abysisinicum的F-1杂种。卡梅尔的高大攀缘线显示出完全肥沃的花粉，表明他们的相关性。这些数据表明，海上豌豆的可与所有其他豌豆的可与性很差（仅限一个方向），支持其在生物物种概念的框架中的具体状态。

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