DOI: 10.1016/j.scienta.2019.109134
论文题名: Dormancy release, germination and ex situ conservation of the southern highland papaya (Vasconcellea quercifolia, Caricaceae), a wild crop relative
作者: Urtasun M.M. ; Giamminola E.M. ; Baskin C.C. ; de Viana M.L. ; Morandini M.N. ; Lamas C.Y. ; Rojas M.F.
刊名: Scientia Horticulturae
ISSN: 3044238
出版年: 2020
卷: 263 语种: 英语
英文关键词: After-ripening
; Carica papaya
; Desiccation tolerance
; Dry storage
; Non-deep physiological dormancy
Scopus关键词: climate change
; crop production
; desiccation
; food security
; fruit
; germination
; global climate
; hybrid
; latitudinal gradient
; ripening
; seed dormancy
; temperature effect
; tolerance
; Argentina
; Carica papaya
; Caricaceae
; Vasconcellea
; Vasconcellea quercifolia
英文摘要: The genetic traits of wild species closely related to crop plants provide opportunities for increased crop production and food security in the face of global climate change. Highland papayas, Vasconcellea spp., have valuable traits for the improvement of common papaya. Vasconcellea quercifolia is the only species of the genus that inhabits both the Andean lowlands and highlands, and it has been proposed as the best option for intergenic hybrids. However, limited information is available on seed dormancy release, germination and ex situ conservation of species belonging to this genus. We investigated the effects of desiccation and storage, in combination with seven pre-germination treatments, on dormancy release and viability of seeds from five wild populations of V. quercifolia along a latitudinal gradient in NW Argentina. Effectiveness of pre-germination treatments on dormancy release increased concomitantly with a decrease in seed moisture content (MC). Ultra-dry (<3 % MC) in combination with potassium nitrate treatment, as well as dry (3–5 % MC) storage at 25 °C consistently alleviated seed dormancy. In general, desiccation and dry storage for 6 months at different temperatures did not affect seed viability; however, there were population differences in the ability of seeds to remain viable. Our data demonstrate the central role of seed MC in the alleviation of V. quercifolia seed dormancy and provide new insights into the conditions required for short- to medium-term ex situ conservation. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158687
Appears in Collections: 气候变化与战略
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作者单位: Germplasm Bank of Native Species (BGEN) of the Institute of Ecology and Human Ambient (INEAH), National University of Salta, Salta, 4400, Argentina; National Council of Scientific and Technical Research (CONICET), Argentina; Department of Biology, University of Kentucky, Lexington, KY 40506-0225, United States; Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY 40546-0321, United States
Recommended Citation:
Urtasun M.M.,Giamminola E.M.,Baskin C.C.,et al. Dormancy release, germination and ex situ conservation of the southern highland papaya (Vasconcellea quercifolia, Caricaceae), a wild crop relative[J]. Scientia Horticulturae,2020-01-01,263