摘要
用电导法、萌芽生长法和组织变褐法对82个桃品种或优系的耐寒性评价，结果表明：桃一年生休眠枝的耐寒温度为-19．0～-27．0℃，叶芽为-18．5～-26．1℃，花芽为-17．0～-24．0℃；枝、叶芽和花芽三者间耐寒性呈显著正相关，抗性强弱的顺序为：枝＞叶芽＞花芽；枝组织的耐寒力顺序为：韧皮部＞木质部＞形成层＞髓；品种间、品种群间及变种间抗寒性也有不同程度的差异。提出在很少发生-23．0℃以下低温的地区为桃适宜经济栽培区。
The hardiness was determined for 82 peach cutivars & strains by electronic conductivity,bud break and shoot-tissue browning evaluation methods with excised dormant shoots. The results showed that the hardiness of shoot-tissue, vegetative and floral buds were-19. 0～-27. 0℃, -18. 5～-26. 1℃,and-17. 0～-24.0℃,respectively; there was positive correlation among the hardiness of shoots, vegetative buds and floral buds,the order of hardiness was:shoots ＞vegetative buds＞floral buds;the hardiness within shoot was:phloem＞xylem＞cambium＞pith,while there were differences in hardiness among cultivars,groups and varieties.
出处
《果树科学》
CSCD
北大核心
1998年第2期107-111,共5页
Journal of Fruit Science
关键词
桃
品种
耐寒性
Peach (Prunus persica)
Cultivar
Hardiness
