杏花及幼果人工模拟冻害及生理研究

以实生大黄杏、沙金红杏、澄城１号为试材，观察花蕾、盛开花、幼果经低温处理后的褐变及花粉活力变化，测定各品种花期的电导率、超氧化物歧化酶（ＳＯＤ）变化。结果表明，澄城１号的抗寒性小于其它２个品种；不同时期的抗寒性为：蕾期〉盛开花期〉幼果期；花不同组成部分的抗寒性为：花瓣〉雄蕊〉雌蕊，新鲜花粉的活力随着低温的加剧而逐渐失去活性。

Effects of Cold Damages Imitation Making on Physiology of Apricot Flowers and Young Fruits

Employing three apricot varieties,big yellow Shisheng,Red Shajin and Chengcheng No.1 as experimental objects,the authors observed the brown change and the pollination activity change of the bud,flower in full blossom and young fruit with low temperature treatment,and determined the electrolyte leakage and superoxidase dimudtase(SOD)of blooming period for the three different varieties. The result shows that Chengcheng No.1 is not as hard as the other two varieties;the hardiness in different period varies as in bud period being the strongest,in full blooming period less and in young fruit period the least; the order of hardiness of the flower''s different parts is the petal''s is the strongest,stamen''s is less and pistil''s the least,and the activity of fresh pollen loses activity gradually when the temperature gets lower.