Herbarium data reveal an association between fleshy fruit type and earlier flowering time
Herbarium data reveal an association between fleshy fruit type and earlier flowering time
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DOI：
10.1086/430097
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发表时间：
2005-07-01
影响因子：
2.3
通讯作者：
Lonnberg, K
中科院分区：
文献类型：
--
作者：
Bolmgren, K;Lonnberg, K
对植物标本馆的物候数据进行了评估，然后将其应用于一项独立的系统发育对比研究，该研究比较了生长在瑞典东南部北部温带省份Uppland和Sodermanland(北纬59度-60度)的肉质和非肉质果实植物的开花时间。为了评价植物物候数据，从瑞典自然历史博物馆(S)的植物标本中获取的开花时间信息与两个独立的田间物候数据集进行了比较。标本收藏和实地研究仅限于上普兰省。从植物标本中得出的开花时间与两个田间物候数据集的相关性同样好，就像田间物候数据集彼此之间的相关性一样。来自田间标本和标本标本的开花时间差异不受标本数量的影响。然而，开花时间的差异受开花季节的影响，与田间数据相比，早春开花物种的开花时间较早，夏末开花物种的开花时间较早。在肉质与非肉质果实植物平均开花时间的系统发育独立对比研究中，收集了17个系统发育独立对照中77种植物的植物标本库数据。肉质果类群的开花时间较早，说明了开花期和果期之间的进化相互依赖关系，以及北温带气候对物候进化的制约作用。这项研究表明，草本植物是比较物候学研究的可靠和节省时间的数据来源，并允许进行大规模的系统发育和地理规模的研究，否则是不可能的。
Herbarium phenology data were evaluated and then applied in a phylogenetically independent contrast study in which flowering times were compared between fleshy and nonfleshy-fruited plants growing in the north-temperate provinces of Uppland and Sodermanland, southeastern Sweden (59 degrees - 60 degrees N). To evaluate herbarium phenology data, flowering-time information taken from herbarium specimens in the Swedish Natural History Museum ( S) was compared with two independent field phenology data sets. Herbarium collections and the field studies were restricted to the province of Uppland. Flowering times derived from herbarium specimens correlated equally well with each of the two field-phenology data sets as the field phenology data sets did to each other. Differences between flowering times derived from field and herbarium collections were not affected by the number of herbarium specimens used. However, these differences in flowering times were affected by flowering season such that herbarium-derived flowering times were later for early spring-flowering species and earlier for late summer-flowering species when compared with flowering times derived from field data. In the phylogenetically independent contrast study of mean flowering times in fleshy-compared with nonfleshy-fruited plants, herbarium data were compiled for 77 species in 17 phylogenetically independent contrasts. Flowering time was found to be earlier for fleshy-fruited taxa, illustrating the evolutionary interdependence between flowering and fruiting phases and the constraining effects of a north-temperate climate on phenology evolution. This study shows that herbaria are reliable and time-saving data sources for comparative phenology studies and allow for studies at large phylogenetic and geographic scales that would otherwise be impossible.