Differential thermal analysis was utilized to determine midwinter hardiness of stem tissues and flower buds of mei flower (Prunus mume) and David’s peach (Prunus davidiana). Low temperature freezing exotherms were fo...Differential thermal analysis was utilized to determine midwinter hardiness of stem tissues and flower buds of mei flower (Prunus mume) and David’s peach (Prunus davidiana). Low temperature freezing exotherms were found to occur at -35℃ in Green Calyxs’ David’s peach and -18℃ in mei flower. A Low temperature exotherm was produced by the freezing of deep supercooling water which was detected in the wood tissues but not in the bark. Freezing processes of the wood and those of the bark appeared to be independent. Deep supercooling points of both species were found to be closely related to freezing injury and to their respective distributions.展开更多
以果梅品种'细叶青'不同时期的花和果实为实验材料,应用Creator SMART cDNA Construction Kit构建了我国果梅第一个花和果实的cDNA文库。结果表明,该文库的库容量约为1.4×106pfumL,从扩增文库中随机挑取30个克隆进行PCR...以果梅品种'细叶青'不同时期的花和果实为实验材料,应用Creator SMART cDNA Construction Kit构建了我国果梅第一个花和果实的cDNA文库。结果表明,该文库的库容量约为1.4×106pfumL,从扩增文库中随机挑取30个克隆进行PCR鉴定,其重组率达97%,插入片段多分布在1~3kb之间,平均大于1kb。说明本研究成功构建了果梅花和果实的cDNA文库,为进一步开展果梅开花调控和果实发育等相关基因的克隆及其表达与功能分析等研究奠定了重要基础。展开更多
探讨了在编著《中国梅花品种图志.中英双语增订版》时,为解决与国际接轨而遇到的先决问题。经钻研《国际栽培植物命名法规》(第7版)后,在梅种之下将品种分为3个品种群,即:①真梅品种群True Mume Group,②杏梅品种群Apricot Mei Group,...探讨了在编著《中国梅花品种图志.中英双语增订版》时,为解决与国际接轨而遇到的先决问题。经钻研《国际栽培植物命名法规》(第7版)后,在梅种之下将品种分为3个品种群,即:①真梅品种群True Mume Group,②杏梅品种群Apricot Mei Group,③樱李梅品种群Blireiana Group。品种群以下,则不再分类、型等级别。而将二元分类法的内涵,融入品种名称之中。不同意樱李梅用独立的杂种学名Prunus×blireiana,也不同意把杏梅提升为独立的种名Prunus×bungo。樱李梅和杏梅还都应列在梅种之下,因三者之内果皮表面均具蜂窝状点穴——此乃梅、杏、李鉴别分类中的最关键性状,必须首先考虑,不能与其他性状等量齐观。展开更多
基金This project was supported by the National Natural Science Foundation of China
文摘Differential thermal analysis was utilized to determine midwinter hardiness of stem tissues and flower buds of mei flower (Prunus mume) and David’s peach (Prunus davidiana). Low temperature freezing exotherms were found to occur at -35℃ in Green Calyxs’ David’s peach and -18℃ in mei flower. A Low temperature exotherm was produced by the freezing of deep supercooling water which was detected in the wood tissues but not in the bark. Freezing processes of the wood and those of the bark appeared to be independent. Deep supercooling points of both species were found to be closely related to freezing injury and to their respective distributions.
文摘以果梅品种'细叶青'不同时期的花和果实为实验材料,应用Creator SMART cDNA Construction Kit构建了我国果梅第一个花和果实的cDNA文库。结果表明,该文库的库容量约为1.4×106pfumL,从扩增文库中随机挑取30个克隆进行PCR鉴定,其重组率达97%,插入片段多分布在1~3kb之间,平均大于1kb。说明本研究成功构建了果梅花和果实的cDNA文库,为进一步开展果梅开花调控和果实发育等相关基因的克隆及其表达与功能分析等研究奠定了重要基础。