文献类型： 外文期刊

作者： Cai, Weijian ¹ ; Zurn, Jason D. ² ; Bassil, Nahla V. ² ; Hummer, Kim E. ² ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Pomol, Jiangsu Key Lab Hort Crop Genet Improvement, 50 Zhongling St, Nanjing 210014, Jiangsu, Peoples R China

2.USDA, Natl Clonal Germplasm Repository, 33447 Peoria Rd, Corvallis, OR 97333 USA

关键词： Fragaria Xananassa;day-neutral;remontant;repeat blooming;germplasm;genetic resources

期刊名称：HORTSCIENCE （ 影响因子：1.455； 五年影响因子：1.617 ）

ISSN： 0018-5345

年卷期： 2017 年 52 卷 11 期

页码：

收录情况： SCI

摘要： The genetic control of flowering habit in many species of Fragaria has not been well studied. Identification of flowering traits and patterns for these taxa could be used in the quest for perpetual flowering (PF) genes and for the octoploids, broaden the genepool of available PF parents for breeding programs. As such, clones from the Fragaria germplasm collection housed at the USDA-ARS National Clonal Germplasm Repository in Corvallis, OR, were evaluated to describe flowering habits in various taxa and identify PF clones. Flower presence was recorded monthly for 962 clones of 36 taxa from the first of May through October in 2015 and 2016 to determine flowering habit and pairwise comparisons between taxa were examined using Pearson's Chi-squared test. Taxa with the largest percent of PF accessions were F. vesca subsp. vesca f. semperflorens, F. vesca subsp. vesca f. alba, F. vesca subsp. americana, and F. virginiana subsp. glauca. These taxa had similar flowering habits to each other but were significantly different (alpha = 0.05) from most other taxa in which the seasonal flowering (SF) trait was predominant. Fifteen clones that demonstrated the PF phenotype in both 2015 and 2016 were identified. Differing genetic controls have been observed for flowering habit in F. Xananassa and F. vesca. Additional studies are needed to determine genetic control of flowering in other Fragaria taxa.