The impact of temperature on seed germination in diverse accessions of 4 wild Vigna species

摘要：

Temperature is one of the most important factors controlling seed germination and emergence ( Fenner and Thompson,2005).Each species has specific temperature requirements : base ( Tb ) and ceiling ( Tce ) temperatures below and above which no germination occurs, and an optimum temperature ( To ) at which germination is rapid.When seeds are germinated at constant temperatures there is a linear relationship between temperature and the rate of seed germination (Craufurd et al, 1996).Using these linear relations, species or genotypic differences in seed germination and emergence can be analyzed.The objective of this study was to quantify the cardinal temperatures ( Tb, To, and Tce ) for different accessions of 4 wild V igna species selected because of their potential use as forages : V.Membranacea, V.Oblongi f olia,V.Racemosa and V.Vexillata.

关键词： Vigna species seed germination temperature germplasm

作者: Y.R.Wang J.Hanson

作者单位: College of Pastoral Agriculture Science and Technology,Lanzhou University,China Forage Diversity Project,International Livestock Research Institute,Ethiopia

会议类型: 国际会议

会议名称: 2008世界草地与草原大会

会议地点: 呼和浩特

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）