摘要
以仁用杏3个主栽品种优一、白玉扁、龙王帽的花芽、花蕾、花朵和幼果等生殖器官为试材,对其自然升温过程中与抗寒性有关的5个生理指标进行了测定。结果表明:随着自然界温度的升高,仁用杏半致死温度(LT50)呈上升趋势,超氧化物歧化酶(SOD)活性和可溶性糖含量呈"M"型变化趋势,过氧化物酶(POD)活性和脯氨酸含量具有相似的变化规律、总体呈下降趋势;3个品种的抗寒性强弱依次为:白玉扁>优一>龙王帽;不同发育时期仁用杏的抗寒性表现为:休眠期>花芽膨大期>花蕾期>盛花期>幼果期;根据抗寒性的变化规律,可在适当时期采取防寒防冻措施,以避免仁用杏遭受冻害。
Changes in 5 cold resistant physiology indexes were investigated in reproductive organs during variation of natural temperature in three main variaties of almond kernel （Armeniaca vulgaris Lain）. The results showed that, with the variation of natural temperature, leathal temperature（LT50 ） presented rising trend, superoxide dismutase （SOD） activity and soluble sugar content ＂M＂ type change trend, peroxidase （POD） activity and proline content similar variation, overall declining. The order for cold resistance of three varieties as follows： Baiyubian〉Youyi〉Longwangmao. The cold resistance of different developmental stages as ：dormant 〉bud expanding〉flower bud〉florescence〉 young fruiting. According to the variation of cold hardinesse, we can take measures in proper period to avoid freezing cold.
出处
《北方园艺》
CAS
北大核心
2009年第12期16-20,共5页
Northern Horticulture
基金
陕西省重大科技专项计划资助项目(2006kz09-G6)
关键词
仁用杏
抗寒性
生理指标
Almond apricot （Armeniaca vulgaris Lain）
Cold resistance
Physiological indexes
