PHENOLOGY OF FLOWERING IN DIPLOID AND TETRAPLOID POPULATIONS OF ANTHOXANTHUM-ALPINUM AND ANTHOXANTHUM-ODORATUM
PHENOLOGY OF FLOWERING IN DIPLOID AND TETRAPLOID POPULATIONS OF ANTHOXANTHUM-ALPINUM AND ANTHOXANTHUM-ODORATUM
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DOI：
10.1139/b88-308
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发表时间：
1988-11-01
期刊：
影响因子：
--
通讯作者：
FELBER, F
中科院分区：
文献类型：
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作者：
FELBER, F
本文在欧洲中部和南部的二倍体和四倍体高山花药（Anthoxanthum alpinum）、Love花药（d.l Love）和odoratum花药（a.a odoratum L.）的实验花园里，以及在二倍体高山花药（Anthoxanthum alpinum）和四倍体芳香花药（a.a odoratum L.）的接触区进行了花期物候学研究。在实验园中，分别在个体水平（开花开始）和群体水平（每个群体在40%、50%、60%、70%和80%的植株上首次开放花药的日期）研究了物候参数。无论两类群的倍性水平如何，花萼早于臭草开花。雄蕊出现与柱头出现的平均时间间隔为2 d，而雄蕊出现与柱头出现的平均时间间隔为6 d。四倍体的开花时间最长，表明该分类群具有较大的物候变异性。原位研究证实了A. alpinum的早熟。多倍体复合体内的物候分化可能与两个二倍体分类群的个体化一致，但先于它们各自的多倍体化阶段。
The phenology of flowering was studied in an experimental garden, on diploid and tetraploid populations of Anthoxanthum alpinum A. and D. Love and of A. odoratum L. of central and southern Europe and also in situ in a contact zone between diploid A. alpinum and tetraploid A. odoratum. In the experimental garden, the phenological parameters were studied at the individual level (onset of flowering) and at the population level (dates on which each population showed opened anthers for the first time on 40, 50, 60, 70, or 80% of the plants). Anthoxanthum alpinum flowered earlier than A. odoratum, regardless of the respective ploidy level of the two taxa. The average time lag between the appearance of the stigma and that of the stamens was about 2 days for the two A. alpinum taxa and 6 days for those of A. odoratum. Flowering was spread over the longest period for the tetraploid A. odoratum, which shows the great phenological variability of this taxon. The in situ study confirms the precocity of A. alpinum. The phenological differentiation within this polyploid complex probably coincides with the individualization of the two diploid taxa but precedes their respective polyploidization phases.